Back Clinic Power & Strength Training. These types of conditioning programs are for both athletes and the general population. They can reach higher levels of personal power and strength, making them capable of achieving their personal fitness goals. Power is defined as the ability to generate as much force as fast as possible. It’s needed for athletic movements such as workouts (clean & jerk), swinging a bat, golf club, tennis racket, and running through a tackle.
Power requires strength and speed to develop force. Strength is the amount of force muscle/s can exert against an external load. One rep maximum test is performed where individuals assess the greatest weight they can lift while maintaining proper form. The movement’s speed is not important in a strength test. Dr. Alex Jimenez offers insight into various stretches and exercises and explains the possible risks of injury on strength training through his numerous article archives.
Can incorporating stretches and exercises help relieve pain and provide more support for individuals with knee pain?
Knee Strengthening
The knee is the largest joint connecting the shin and thigh bones. Its cartilage, muscles, ligaments, and nerves all play a role in maintaining the joint’s health and movement. Individuals of all ages can experience knee pain, but it is more common in those with labor-intensive jobs, arthritis, and athletes. A healthcare provider will prescribe targeted stretches and exercises for individuals with pain, inflammation, or a health disorder that affects the strength of their knees to relieve knee pain while strengthening the muscles around the joint. Knee stretches and exercises are great for those with sore knees and knee pain or stiffness, but they can also be used as preventative medicine.
Exercise Benefits
Doing knee-strengthening exercises can significantly improve joint health. The benefits associated with exercises include (Zeng C. Y. et al., 2021)
Avoid curving the spine to get closer to the thigh during the stretch. The key is not how far you can bend down but getting a deep stretch. Individuals not yet flexible enough to go all the way down should bend until comfortable but can still feel the stretch in their hamstrings. With practice and time, flexibility will improve. This stretch should be felt in the hamstrings.
Step Exercises
Step exercises, or step-ups, involve using a platform at least 6 inches high. To perform the exercise:
Put one foot onto the platform and use that leg to lift the other foot off the floor.
Hold the position with the foot hanging loosely for 3 to 5 seconds, then place the foot back on the floor.
Avoid locking the knees when stepping up on the platform. Locking the knees switches off the muscles that need strengthening (American Academy of Orthopaedic Surgeons, 2009). Step exercises work out various areas of the leg. Individuals should feel this exercise in the thigh, hip, and buttocks.
Post-Exercise Stretching
Post-exercise stretching is vital in physical rehabilitation and strengthening. Stretching after exercise, individuals can (Afonso J. Clemente. et al., 2021)
Relieve and reduce soreness.
Expedite recovery times.
Increase range of motion.
Strengthen the knees more quickly and effectively.
Post-exercise stretches for knee pain and weakness can include:
Quadricep Stretch
This stretch targets the quad muscles located in the thighs. To perform this stretch:
Stand with the feet planted flat on the floor, spaced the same width as the shoulders.
Bending the left knee, grab the foot with the left hand and pull the heel toward the buttocks.
Hold for 5 to 10 seconds.
Repeat on both sides.
What to Avoid
There is no need to pull the heel too far into the buttocks. The goal is to feel a deep stretch. Pushing it too far can lead to injury. (Lee J. H. et al., 2021)
Toe Touches
Toe touches will help stretch calve muscles and hamstrings. To perform this stretch:
Sit on the floor with the legs straight out in front.
Bend the body over the legs at the hips, reaching for the toes in front while maintaining a straight back.
Relax the shoulders and keep them away from the ears.
Once touching the toes, hold the stretch for 15 seconds.
What To Avoid
Individuals who cannot yet touch their toes should perform the same steps and reach only as far as is comfortably possible. Over time, flexibility will improve. (Lee J. H. et al., 2021)
Injury Medical Chiropractic Clinic
These are examples of exercises and stretches that a physical therapy and chiropractic team may prescribe. Each case is different and requires reviewing individual medical history and physical examination to determine the proper treatment program. Injury Medical Chiropractic and Functional Medicine Clinic works with primary healthcare providers and specialists to develop a personalized treatment program through an integrated approach to treating injuries and chronic pain syndromes, improving flexibility, mobility, and agility to relieve pain and help individuals return to normal activities. If other treatments are needed, Dr. Jimenez has teamed up with top surgeons, clinical specialists, medical researchers, and rehabilitation providers to provide the most effective treatments.
Knee Pain Rehabilitation
References
Zeng, C. Y., Zhang, Z. R., Tang, Z. M., & Hua, F. Z. (2021). Benefits and Mechanisms of Exercise Training for Knee Osteoarthritis. Frontiers in physiology, 12, 794062. doi.org/10.3389/fphys.2021.794062
Kothawale S. and Rao K. (2018). Effectiveness of positional release technique versus active release technique on hamstrings tightness. Int J Physiother Res., 6(1), 2619-2622. doi.org/https://dx.doi.org/10.16965/ijpr.2017.265
Wang, H., Ji, Z., Jiang, G., Liu, W., & Jiao, X. (2016). Correlation among proprioception, muscle strength, and balance. Journal of physical therapy science, 28(12), 3468–3472. doi.org/10.1589/jpts.28.3468
Afonso, J., Clemente, F. M., Nakamura, F. Y., Morouço, P., Sarmento, H., Inman, R. A., & Ramirez-Campillo, R. (2021). The Effectiveness of Post-exercise Stretching in Short-Term and Delayed Recovery of Strength, Range of Motion and Delayed Onset Muscle Soreness: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Frontiers in physiology, 12, 677581. doi.org/10.3389/fphys.2021.677581
Lee, J. H., Jang, K. M., Kim, E., Rhim, H. C., & Kim, H. D. (2021). Effects of Static and Dynamic Stretching With Strengthening Exercises in Patients With Patellofemoral Pain Who Have Inflexible Hamstrings: A Randomized Controlled Trial. Sports health, 13(1), 49–56. doi.org/10.1177/1941738120932911
For individuals who don’t have time for a full workout, could incorporating sprint exercise training be an option to improve their cardiovascular and overall health?
Sprint Exercise Training
Most think of running when they hear the word sprinting. However, sprinting can be performed in any aerobic activity, whether swimming, cycling, rollerblading, or exercising on an elliptical machine. Sprint exercise training means varying the intensity levels of the activity. It is also known as sprint interval training or speed drills. It targets cardiovascular endurance and is suitable for all fitness levels, from beginners to advanced. This type of training is demanding and requires high motivation, but it can lead to significant improvements and help achieve fitness goals faster.
Sprint workouts are a time saver. Many exercise guidelines recommend up to 60 minutes of moderate exercise 3 times a week; however, many people don’t have the time. Studies have shown that short, high-intensity sprint exercise training improves aerobic capacity and endurance in half the time of traditional endurance exercise. Sprint exercise training burns calories, improves cardiovascular health, builds muscle, and increases speed and power. Sprint workouts are great for individuals who lack time for traditional steady endurance exercise but want to improve cardiovascular health. (Vollaard, N. B. J., and Metcalfe, R. S. 2017) Adding them to a workout routine can take training to a new level.
Training
The key to sprint training is performing an activity at a certain percentage of all-out effort to increase heart rate. Sprint exercise training is recommended three times a week, with at least one to two days of rest or other easy exercises between sprint workouts. How to do.
Warm-up
Warm up with easy exercise for five to 10 minutes.
Slowly perform the exercise that will be done for the sprints to prepare the body for the intense sprint.
Do the First Sprint
Perform the first sprint at around 60% intensity.
Slow down and continue warming up if there is muscle tightness or joint pain.
Rest
Recover for four minutes by slowing to a comfortable pace, but continue moving.
Do the Second Sprint
Perform the next sprint at 80% max intensity.
Rest
Rest for four minutes.
Do the Third Sprint
Perform the remainder of the sprints at 100% intensity or all-out efforts for 30 seconds.
Push to the maximum for each exercise.
Rest
Recover for four minutes after each sprint to slow down breathing and heart rate, and can hold a conversation without gasping.
Repeat
Repeat the sprint/recovery routine four to eight times, depending on fitness level and ability.
For the first workout, stop at four sprints.
Gradually build up to eight.
Benefits
Sprint exercise training enhances endurance performance and can be effectively used by athletes, fitness enthusiasts, and individuals who want to improve their fitness and health. (Litleskare, S. et al., 2020) In one study, participants who completed eight weeks of sprint training saw improvements in maximal oxygen uptake or VO2 max. The test is one way to measure cardiovascular fitness. (Litleskare, S. et al., 2020) These short bursts of intense exercise improve muscle health and performance comparable to several weeks of traditional training. (Gunnarsson, T. P. et al., 2013) Other studies have found that short, high-intensity exercise burns more calories than the same amount of moderate-level cardiovascular exercise. (Vollaard, N. B. J., and Metcalfe, R. S. 2017)
Variations
There are different ways to structure a sprinting routine, and different fitness goals will determine the intensity, duration, and number of sprints that should be performed.
Beginners
Those new to sprinting should start slow, as overdoing it can lead to injury. Work on building up a base level of fitness before introducing sprinting into an exercise routine. Start with one set of four sprint/rest cycles when trying sprints. As fitness goals are achieved, add more sprints to each set or different sprints.
Intermediate
Once a sprinting exercise routine is begun, it may only be a few weeks before one is ready to advance to an intermediate level. Try increasing the number of sprints at different intensity levels. However, avoid sprint exercises too often weekly as the body needs adequate rest.
Advanced
Advanced athletes can intensify the routine by increasing intensity and adding reps. One way is by adding resistance. For example, for those running or cycling, try sprinting hills, or if rollerblading, try wearing wrist and ankle weights to increase the load. Swimmers can use strength-building techniques to focus on specific body areas or add resistance. The intensity of any sprinting activity can be intensified by wearing a weighted vest.
Beginner Errors
A few common starting mistakes include going too hard, advancing too quickly, and doing too many for too long. Sprints are not meant to replace moderate-intensity exercise. The goal is to modulate the intensity of aerobic activities. A study showed that not getting enough rest between sprints led to an inability to perform as well during sprinting. (Selmi, M. A. et al., 2016)
Safety
Sprint workouts can be done with running, swimming, cycling, or other aerobic cardiovascular exercises. The following precautions should be considered before adding sprint training to a workout schedule:
Safety
Because sprinting is a high-intensity exercise, it is recommended that individuals consult with a healthcare professional and review the physical activity readiness questionnaire (PAR-Q) before beginning a sprint training workout.
Base Fitness
A strong fitness base in the sprint activity is also important.
To build a fitness base, follow the 10% rule and gradually increase training volume.
Frequency
Because of the intensity, sprint workouts should not be done more than three times a week.
Muscle Soreness
Launching into a sprint program can cause delayed-onset muscle soreness.
Experts recommend having about three to four weeks of base fitness before beginning.
Injuries are more likely if the body isn’t properly prepared.
The goal is to do a sprint workout six times in two weeks, then only perform 2 times a week for maintenance for six to eight weeks before changing the workout. On the days following a sprint workout, aim for 20–30 minutes of the same aerobic activity at an easier pace to help recover but maintain results. If pleased with the results, continue with the routine longer, but it is recommended to vary the workouts every few months and throughout the year. Modify the routine to find what works best.
Military Training and Chiropractic Care: Maximizing Performance
References
Vollaard, N. B. J., & Metcalfe, R. S. (2017). Research into the Health Benefits of Sprint Interval Training Should Focus on Protocols with Fewer and Shorter Sprints. Sports medicine (Auckland, N.Z.), 47(12), 2443–2451. doi.org/10.1007/s40279-017-0727-x
Litleskare, S., Enoksen, E., Sandvei, M., Støen, L., Stensrud, T., Johansen, E., & Jensen, J. (2020). Sprint Interval Running and Continuous Running Produce Training Specific Adaptations, Despite a Similar Improvement of Aerobic Endurance Capacity-A Randomized Trial of Healthy Adults. International journal of environmental research and public health, 17(11), 3865. doi.org/10.3390/ijerph17113865
Gunnarsson, T. P., Christensen, P. M., Thomassen, M., Nielsen, L. R., & Bangsbo, J. (2013). Effect of intensified training on muscle ion kinetics, fatigue development, and repeated short-term performance in endurance-trained cyclists. American journal of physiology. Regulatory, integrative and comparative physiology, 305(7), R811–R821. doi.org/10.1152/ajpregu.00467.2012
Selmi, M. A., Haj, S. R., Haj, Y. M., Moalla, W., & Elloumi, M. (2016). Effect of between-set recovery durations on repeated sprint ability in young soccer players. Biology of sport, 33(2), 165–172. doi.org/10.5604/20831862.1198636
Can a rowing machine provide a full-body workout for individuals looking to improve fitness?
A group of people exercise in the gym using a rowing machine together. A side view of a sportswoman exercising on a rowing machine in a CrossFit center. A muscular girl and a sporty man are working out on a training simulator at a CrossFit gym.
Rowing Machine
Today, rowing machines are widely recognized as effective fitness tools. They can be found in gyms, fitness centers, physical therapy, and sports rehabilitation clinics. Rowing is low-impact, allowing control of movement and pace, and is recommended for active recovery. It’s sometimes recommended as an exercise for individuals with early stages of osteoarthritis.
Benefits
The benefits include:
Rowing is a total-body workout that strengthens major muscle groups in the arms, legs, and core and increases cardiovascular endurance.
The upper and lower body are used on every stroke.
Strengthens and tones the muscles.
Rowing burns significant calories without placing added stress on the joints.
Improves endurance and heart and lung health.
Cardiovascular Fitness
Rowing is a rare exercise that involves power and endurance. It is an aerobic exercise that increases the body’s heart rate and oxygen, improving cardiovascular fitness. (Hansen RK, et al. 2023) Through continuous, rhythmic movement, which increases oxygen utilization, rowing enhances the heart and lungs’ ability to supply oxygen to the body and works on muscular endurance.
Full-Body Workout
A rowing workout is a comprehensive full-body workout that simultaneously works multiple body areas and muscle groups, specifically the arms, back, core, and legs. The motion moves major muscle groups through the full range of motion, promoting flexibility and muscle tone improvements that are great for individuals with trouble with weight-bearing exercises like running. Rowing can also improve physiological markers, depending on the intensity of the workout and the heart rate zone maintained.
Joint-Friendly
Rowing is a low-impact exercise, making it easier on joints and suitable for individuals with joint concerns or those looking for a joint-friendly workout. The workout engages the largest muscles in a low-impact way with no pounding on the joints or excessive rotation.
Burns Calories
Rowing can be an efficient way to burn calories. Its cardiovascular and resistance training combination makes it an effective tool for weight management and weight loss. Alternating between higher and lower intensities can enhance calorie burning during and after the exercise session from excess post-exercise oxygen consumption (EPOC),also known as the afterburn effect. (Sindorf, M. A. G. et al., 2021)
Improves Posture
Maintaining a healthy posture offers numerous benefits, such as improving breathing ability, aiding in digestion, and preventing injuries. (Kim D, 2015) Rowing can be an effective workout that enhances postural strength and awareness and reduces back pain risks. Proper spine activation is necessary for efficient rowing, which also helps to pull the shoulders back. The hip flexors help to lengthen during the drive phase while the shoulders open. Proper rowing technique involves:
Dorsiflexion of the foot.
Stretching of the Achilles tendon.
Engaging the tibialis.
Getting Started
Rowing is not too difficult to get started. Following techniques shared by experts will help improve the experience and reduce the risk of injury.
Maintaining Upright Posture
The back should be straight throughout the movement.
Brace the core muscles to keep the back from rounding while bending at the knees and hips during the movement.
This keeps the body aligned, prevents injuries, and makes the exercise more effective.
Maintain Stroke Sequences
There are four parts to the sequence:
The catch – is when you sit at the front of the machine with your knees bent and arms reaching out to hold the handle.
The drive – is the next step, which involves pushing into the platform with your heels and driving through your legs while engaging your legs, glutes, and core. During the drive, you want to lean back slightly as you push with your legs while pulling the handle to the bottom of the rib cage.
The finish – lean back a little more while pulling the handle to the lower chest level.
The recovery – extend your arms forward while bending the hips to bring the torso forward, using your legs to pull back to the starting position.
Adjust Resistance Accordingly
Most rowing machines have adjustable resistance settings. Beginners should start with a lower resistance level to focus on proper technique and gradually increase as they become more comfortable so that the resistance provides a challenge without compromising form. On a rowing machine, the individual should feel like they are gliding efficiently over water with strong, powerful strokes repeated for however many reps depending on the workout.
Breathing
Aerobic workouts require proper breathing. It is recommended to inhale during the recovery phase as you slide the seat forward and exhale during the drive phase when pushing through the legs. Breathing in sync with the rowing motion keeps the oxygen flow going, so the body maintains energy and smooth strokes.
Injury Medical Chiropractic and Functional Medicine Clinic
As with any fitness program, individuals should consult a healthcare professional or fitness expert, especially if pre-existing health conditions or concerns exist. At Injury Medical Chiropractic and Functional Medicine Clinic, we focus on what works for you and strive to better the body through researched methods and total wellness programs. We focus on treating patients’ injuries and chronic pain syndromes to create personalized care plans that improve ability through flexibility, mobility, and agility programs personalized to the individual. Using an integrated approach, our goal is to relieve pain naturally by restoring health and function to the body through Functional Medicine, Acupuncture, Electro-Acupuncture, and Sports Medicine protocols. If other treatment is needed, Dr. Jimenez has teamed up with the top surgeons, clinical specialists, medical researchers, and premier rehabilitation providers to provide the most effective treatments available.
Core Exercises and Back Pain
References
Hansen, R. K., Samani, A., Laessoe, U., Handberg, A., Mellergaard, M., Figlewski, K., Thijssen, D. H. J., Gliemann, L., & Larsen, R. G. (2023). Rowing exercise increases cardiorespiratory fitness and brachial artery diameter but not traditional cardiometabolic risk factors in spinal cord-injured humans. European journal of applied physiology, 123(6), 1241–1255. doi.org/10.1007/s00421-023-05146-y
Sindorf, M. A. G., Germano, M. D., Dias, W. G., Batista, D. R., Braz, T. V., Moreno, M. A., & Lopes, C. R. (2021). Excess Post-Exercise Oxygen Consumption and Substrate Oxidation Following High-Intensity Interval Training: Effects of Recovery Manipulation. International journal of exercise science, 14(2), 1151–1165.
Kim, D., Cho, M., Park, Y., & Yang, Y. (2015). Effect of an exercise program for posture correction on musculoskeletal pain. Journal of physical therapy science, 27(6), 1791–1794. doi.org/10.1589/jpts.27.1791
Can participating in a favorite sport several days a week help individuals trying to get fit or maintain a certain level of health?
Sports For Fitness
Spending hours in the gym can sometimes feel like a chore, especially for individuals who prefer competitive or recreational sports over traditional cardiovascular and resistance training. Various sports activities require only time, energy, sufficient apparel, and the willingness to play. Here are a few sports for fitness that can help improve overall health and wellness.
Cycling and Mountain Biking
Cycling is one of the best sports for fitness. Whether on roads or trails, fast or slow, it is a fantastic aerobic workout and benefits the leg muscles, specifically the quads, glutes, and hamstrings. Research has shown that, especially for those with diabetes, cycling can lower the risk of premature mortality. (Mathias Ried-Larsen et al., 2021)
There are appropriate bikes for all ages and stages.
Beginners start with paved trails.
Intermediate to advanced levels can engage in road cycling and mountain biking.
Road or mountain bike races for individuals looking to compete.
Racket Sports
Racket sports players range from all ages and fitness levels, entry-level to highly competitive, and all provide intense workouts.
Racket sports target the muscles in the back, shoulders, arms, chest, quads, glutes, hamstrings, and core.
Racquet sports have also been shown to lower the risk of cardiovascular disease mortality. (Pekka Oja et al., 2017)
Combine that with the endurance, speed, balance, and agility required to compete, and individuals will quickly see how these two sports can give a phenomenal workout while also burning a ton of calories.
Golf
For golf to be a fitness sport, individuals must walk all the holes while carrying or pushing the clubs.
What is needed is a supportive pair of shoes.
Walking the course can have multiple health benefits, including cardiovascular and respiratory health. (A. D. Murray et al., 2017)
Golf is a sport individuals can participate in at any life stage.
Water Sports
Paddleboarding, rowing, kayaking, and canoeing can provide a fitness solution for individuals who enjoy the outdoors. These sports increase heart rate, improve muscular endurance and strength, and burn serious calories. (Thomas Ian Gee et al., 2016)
Swimming
Activities that require upper and lower body muscles to work together rank high in sports for fitness. Swimming is the perfect full-body workout for anyone looking for an intense and competitive outlet that requires strength and endurance.
Swimming can be a year-round sport with various levels of competition.
Triathlon Training
Triathlon training is for lifelong athletes looking to improve endurance and strength and exercise beginners who need a goal; it is the ultimate sport for fitness.
Running, biking, and swimming together challenges every muscle and significantly increases aerobic and anaerobic fitness. (Naroa Etxebarria et al., 2019)
There’s something for every fitness level, from short sprint competitions to full Ironman events.
Basketball and Volleyball
Basketball and volleyball offer the physical benefits of a hard workout. These sports require sprinting, pivoting, and jumping, which engages the cardiovascular system and strengthens every muscle. Playing volleyball in the sand makes the muscles work harder.
Both sports are appropriate for most levels of fitness.
Beginners are recommended to learn the basic skills and go through drills before moving to games or matches.
Both sports require constant movement, increasing the risk of injury, so it is important to learn the fundamentals.
Talk to a healthcare provider before starting a new exercise routine or adding a new activity to an exercise regimen.
Lumbar Sports Injuries
References
Ried-Larsen, M., Rasmussen, M. G., Blond, K., Overvad, T. F., Overvad, K., Steindorf, K., Katzke, V., Andersen, J. L. M., Petersen, K. E. N., Aune, D., Tsilidis, K. K., Heath, A. K., Papier, K., Panico, S., Masala, G., Pala, V., Weiderpass, E., Freisling, H., Bergmann, M. M., Verschuren, W. M. M., … Grøntved, A. (2021). Association of Cycling With All-Cause and Cardiovascular Disease Mortality Among Persons With Diabetes: The European Prospective Investigation Into Cancer and Nutrition (EPIC) Study. JAMA internal medicine, 181(9), 1196–1205. doi.org/10.1001/jamainternmed.2021.3836
Oja, P., Kelly, P., Pedisic, Z., Titze, S., Bauman, A., Foster, C., Hamer, M., Hillsdon, M., & Stamatakis, E. (2017). Associations of specific types of sports and exercise with all-cause and cardiovascular-disease mortality: a cohort study of 80 306 British adults. British journal of sports medicine, 51(10), 812–817. doi.org/10.1136/bjsports-2016-096822
Murray, A. D., Daines, L., Archibald, D., Hawkes, R. A., Schiphorst, C., Kelly, P., Grant, L., & Mutrie, N. (2017). The relationships between golf and health: a scoping review. British journal of sports medicine, 51(1), 12–19. doi.org/10.1136/bjsports-2016-096625
Ian Gee, T., Caplan, N., Christian Gibbon, K., Howatson, G., & Grant Thompson, K. (2016). Investigating the Effects of Typical Rowing Strength Training Practices on Strength and Power Development and 2,000 m Rowing Performance. Journal of human kinetics, 50, 167–177. doi.org/10.1515/hukin-2015-0153
Lo, G. H., Ikpeama, U. E., Driban, J. B., Kriska, A. M., McAlindon, T. E., Petersen, N. J., Storti, K. L., Eaton, C. B., Hochberg, M. C., Jackson, R. D., Kwoh, C. K., Nevitt, M. C., & Suarez-Almazor, M. E. (2020). Evidence that Swimming May Be Protective of Knee Osteoarthritis: Data from the Osteoarthritis Initiative. PM & R : the journal of injury, function, and rehabilitation, 12(6), 529–537. doi.org/10.1002/pmrj.12267
Etxebarria, N., Mujika, I., & Pyne, D. B. (2019). Training and Competition Readiness in Triathlon. Sports (Basel, Switzerland), 7(5), 101. doi.org/10.3390/sports7050101
For individuals starting to lift weights, motor units are important for muscle movement. Can building more motor units help build strength and maintain muscle mass?
Motor Units
Motor units control the skeletal muscles and are the force behind every body movement. (C J. Heckman, Roger M. Enoka 2012)
This includes voluntary movements like lifting weights and involuntary movements like breathing. When lifting objects and weights, the body adapts to motor unit needs, meaning that individuals must consistently increase the weight to progress.
Lifting weights regularly trains the body to generate more motor units and force.
General guidelines recommend lifting weights for all muscle groups two to three non-consecutive days a week.
Consistency helps maintain muscle mass.
Regular progression increases the risk of plateauing.
What They Are
Exercise increases the body’s muscle strength, while sedentariness and inactivity weaken them. A motor unit is a single nerve cell/neuron that supplies the nerves to innervate a group of skeletal muscles. The neuron receives signals from the brain that stimulate all the muscle fibers in that particular motor unit to generate movement.
Muscles comprise different fiber types.
They are attached to the bones with connective tissue, which is stronger than the muscle.
Multiple motor units are dispersed throughout the muscle.
The motor units help ensure muscle contraction force is evenly spread throughout the muscle.
Motor units are different sizes and operate differently depending on where and what they do.
Small motor units might only innervate five or ten fibers. For example, to blink or sniff.
Large motor units can comprise hundreds of muscle fibers for swinging or jumping movements.
How They Work
The number of units activated depends on the task. Stronger muscle contractions require more. However, fewer units are needed to accomplish the movement for individuals expending less effort.
Contraction
Once a unit receives a signal from the brain, the muscle fibers contract simultaneously.
The force generated depends on how many units are required to accomplish the task. (Purves D. et al., 2001)
For example, picking up small objects like a pen and paper requires only a few units to generate the force needed.
If picking up a heavy barbell, the body needs more units because more force is needed to lift the heavier load.
The body can generate more force with stronger muscles.
This happens when lifting weights on a regular basis and overloading the muscles with more weight than they can handle.
This process is known as adaptation.
Adaptation
The purpose of lifting weights is to challenge the muscles so they adapt to the new challenge and grow in strength and mass. Motor units are a major part of the adaptation process. (Dr. Erin Nitschke. American Council on Exercise. 2017)
As individuals continue working out, their ability to generate more force increases and units activate more rapidly.
This makes movements more efficient.
Individuals can increase motor unit recruitment by consistently increasing the weight challenge to their muscles.
The development creates movement memory.
A relationship between the brain, muscles, and motor units is established even if the individual stops working out. The pathways are still there no matter how long the individual takes off.
When returning to training, the body will remember how to ride a bike, do a bicep curl, or squat.
However, the muscles will not have the same strength as the strength needs to be built back along with endurance that may have been lost.
It is the movement memory that remains.
Military Training and Chiropractic Care: Maximizing Performance
References
Heckman, C. J., & Enoka, R. M. (2012). Motor unit. Comprehensive Physiology, 2(4), 2629–2682. doi.org/10.1002/cphy.c100087
Purves D, Augustine GJ, Fitzpatrick D, et al., editors. (2001). Neuroscience. 2nd edition. Sunderland (MA): Sinauer Associates; 2001. The Motor Unit. Available from: www.ncbi.nlm.nih.gov/books/NBK10874/
For individuals wanting to improve their fitness routine can incorporating wearable weights and knowing how to use them effectively help achieve health goals?
Wearable Weights
Adding wearable weights allows individuals to use their body weight with added resistance. This can add strength training to a routine but can also be used during walks or runs to increase cardiovascular health and aid in weight loss. Research studies have found that wearing a weighted vest reduces body weight and fat mass. This is because heavier loads increase energy expenditure for the increase in physical workload. (Claes Ohlsson, et al., 2020)
Benefits
Wearable weights are easy to use.
Depending on the type, they are compact and can be taken on the go.
Wearing weights is an option for individuals with injuries or degenerative joint disease like arthritis that makes it difficult to hold or move weights.
Because many are only a few pounds, they are available to anyone from adolescents to the elderly.
Anyone can benefit from the different types of wearable weights.
Types
Three main types of wearable weights include wrist weights, ankle weights, and weighted vests.
Wrist weights can replace dumbbells in some cases.
They are typically between 1 to 10 pounds.
Ankle weights can provide extra resistance to leg motions.
They can be found from 1 pound up to 20 pounds.
Weighted vests provide a full-body challenge.
The weight choices for them vary, as most contain pockets where weight can be increased or decreased.
Using The Weights
Individuals can use wearable weights as a complement to strength and cardiovascular regimens. Beginners will want to start with lighter weights worn for less time. As the body becomes stronger, it’s important to increase the weight to see results.
Ankle Weights
Ankle weights can be used during a strength training workout to add resistance to lower body exercises.
As the body ages, it becomes more important to decrease the risk of falls by increasing lower limb and trunk strength.
Wearing weights on the wrists generates a higher energy expenditure, which allows one to add intensity to a walk or run without having to increase speed. (Catherine T. Campaña, Pablo B Costa. 2017)
Weighted Vests
Wearing a weighted vest during workouts will create a full-body challenge.
They can be used while walking or running and automatically add more difficulty.
Another way to utilize a weighted vest is to wear it while completing a regular workout.
Whether doing HITT, strength training, etc, individuals can wear a weighted vest.
The weight should be evenly distributed to prevent any injuries or functional disorders to the lower body.
Individuals want to talk to a healthcare provider before beginning a new fitness program, and adding weights is no different, especially if there are any current or past injuries.
Is Motion Key To Healing?
References
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Chen, L., & Yu, Y. (2020). Exercise and Osteoarthritis. Advances in experimental medicine and biology, 1228, 219–231. doi.org/10.1007/978-981-15-1792-1_15
Akatsu, H., Manabe, T., Kawade, Y., Masaki, Y., Hoshino, S., Jo, T., Kobayashi, S., Hayakawa, T., & Ohara, H. (2022). Effect of Ankle Weights as a Frailty Prevention Strategy in the Community-Dwelling Elderly: A Preliminary Report. International journal of environmental research and public health, 19(12), 7350. doi.org/10.3390/ijerph19127350
Yang, H. S., James, C. R., Atkins, L. T., Sawyer, S. F., Sizer, P. S., Jr, Kumar, N. A., & Kim, J. (2018). Effects of arm weight on gait performance in healthy subjects. Human movement science, 60, 40–47. doi.org/10.1016/j.humov.2018.05.003
Campaña, C. T., & Costa, P. B. (2017). Effects of walking with hand-held weights on energy expenditure and excess postexercise oxygen consumption. Journal of exercise rehabilitation, 13(6), 641–646. doi.org/10.12965/jer.1735100.550
Gaffney, C. J., Cunnington, J., Rattley, K., Wrench, E., Dyche, C., & Bampouras, T. M. (2022). Weighted vests in CrossFit increase physiological stress during walking and running without changes in spatiotemporal gait parameters. Ergonomics, 65(1), 147–158. doi.org/10.1080/00140139.2021.1961876
Tennis requires strength, power, and endurance. Can combining tennis weight training into a player’s fitness regimen that is broken up into phases achieve optimal results?
Tennis Weight Training
In professional sports that utilize weight lifting, the training is often broken up into seasonal phases. (Daniel S Lorenz, Michael P Reiman, John C Walker. 2010) Each phase consists of specific objectives that contribute to and build upon the previous phase. This is known as periodization. Tennis is played year-round indoors and outdoors. This is an example of a tennis weight training program to build up strength.
Pre-Season
In the early pre-season, players prepare to rebuild their strength after a break.
The emphasis is on building functional strength and some muscle.
Late Pre-Season
In late pre-season, players workout to get ready for the start of the season.
Here, the emphasis is on building maximum power.
In Season
In season, regular practice, play, and competition get underway and players are in top condition.
In this phase, strength and power maintenance is the focus.
Season Break
This is when players need to relax for a while.
However, players need to keep active if they want to maintain some level of fitness.
The emphasis is on rest and recovery with the maintenance of light activity, like cross-training and light gym workouts.
Research has shown that taking a break from serious strength training does help the body recover and rebuild. (Daniel Lorenz, Scot Morrison. 2015)
This is a three-phase all-around program.
The first phase concentrates on building basic strength and muscle
The second phase on power delivery.
Players who play year-round can continue with the power program once they build the basics.
Players who take a break for longer than six weeks should start again with the strength program.
Pre-Season – Phase One
Strength and Muscle
The focus is on lifting heavy weights, but not going full force to begin training the nervous system to work with the muscle fibers.
Some muscle building or hypertrophy/building muscle size will happen during strength development.
Strength is the foundation for the power development phase.
Exercises:
Duration: 6-8 weeks
Workout Days: 2-3, with at least one day, however, two are recommended between sessions.
Reps: 8-10
Sets: 2-4
Rest between sets: 1-2 minutes
Barbell squat, dumbbell squat, or sled hack squat
Romanian deadlift
Dumbbell bent-over row
Dumbbell triceps extension or machine pushdown
Cable wood chop
Lat pulldown to the front with a wide grip
Reverse crunch
Things to Remember
Use the Proper Weight
Adjust the weight so that the last reps are heavy but don’t cause a complete failure.
Balance the Lower Half
The posterior chain of the hips, the gluteals/buttocks, the upper legs, and the abdominals are of equal importance and require equal attention. (Eline Md De Ridder, et al., 2013)
Squats and deadlifts build strength and power in this region.
Follow Proper Form
For upper body exercises like the dumbbell press, lat pulldown, and wood chops the proper form needs to be followed.
Keep the forearms in a vertical plane with the upper arms.
Do not extend excessively at the bottom of the movement.
Remember to protect the vulnerable shoulder joint.
Listen to The Body
Strength training is physically and mentally challenging.
Individuals who are not able to recover from a session with only one rest day are recommended to move the program to two sessions per week.
Muscle soreness or delayed onset muscle soreness – DOMS – is normal, however, joint pain is not.
Monitor arm and shoulder reactions during this phase.
Stop if any joint pain or discomfort is felt.
Late Pre-Season – In-Season – Phase Two
Power
Power is the ability to move the heaviest loads in the shortest time and is the combination of strength and speed. In this phase, the player builds on the strength developed in phase one with tennis weight training that will increase the ability to move a load at high velocity.
Power training requires lifting weights at high velocity and with explosiveness.
The body needs to rest adequately between repetitions and sets so that each movement is done as fast as possible.
The number of sets can be less than phase one because there is no point in training at this level when the body is fatigued.
Exercises
Duration: Ongoing
Days per week: 2
Reps: 8 to 10
Sets: 2-4
Rest between repetitions: 10 to 15 seconds
Rest between sets: at least 1 minute or until recovered
Barbell or dumbbell hang clean
Cable push-pull
Cable wood chop
One arm cable raises
Medicine ball push press
Medicine ball standing twist with a partner or alone – 6×15 repetitions fast and recover between sets.
Reminders When Preparing For the Season
Recovery Time
In power training, it’s important that the body has relatively recovered for each repetition and set so that the individual can maximize the movement.
The weights should not be as heavy and the rest periods sufficient.
Push When Possible
Rest is important, at the same time, the player needs to push through reasonably heavy loads to develop power against significant resistance.
When doing medicine ball twists, do a full set at maximum, then sufficiently rest before the next one.
If doing the medicine ball exercises alone, use a lighter ball and keep the ball in your hands while twisting.
In Season – Phase Three
When the season begins training does not stop in order to help maintain strength and power.
Strength and Power Maintenance
Alternate phase one and phase two for a total of two sessions each week.
Every fifth week, skip weight training to achieve optimal recovery.
Key Points
Things to keep in mind during the season.
Avoid Overscheduling
Avoid strength training on the same day when practicing on the court.
If the weight training has to be both on the same day, try to separate the workouts into morning and afternoon sessions.
Plan Time
Rest completely from strength training one week out of every six.
Light gym work is fine.
During the season, use intuition when it comes to working out at the gym.
Individuals with limited time, stick to court skills training instead of tennis weight training.
Off Season
If there is an off-season, this is the time for emotional and physical decompression and full-body recovery.
For several weeks, forget about weight training and do other things.
Stay fit and active with cross-training or other physical activities but keep it light to prevent injuries.
It is recommended to consult a coach, trainer, sports chiropractor, and/or physical therapist to develop a program specific to an individual’s needs, fitness goals, and access to resources.
Spine Injuries In Sports
References
Lorenz, D. S., Reiman, M. P., & Walker, J. C. (2010). Periodization: current review and suggested implementation for athletic rehabilitation. Sports health, 2(6), 509–518. doi.org/10.1177/1941738110375910
Lorenz, D., & Morrison, S. (2015). CURRENT CONCEPTS IN PERIODIZATION OF STRENGTH AND CONDITIONING FOR THE SPORTS PHYSICAL THERAPIST. International journal of sports physical therapy, 10(6), 734–747.
De Ridder, E. M., Van Oosterwijck, J. O., Vleeming, A., Vanderstraeten, G. G., & Danneels, L. A. (2013). Posterior muscle chain activity during various extension exercises: an observational study. BMC musculoskeletal disorders, 14, 204. doi.org/10.1186/1471-2474-14-204
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