Progressive overload

Last updated
SBFF SM 2019 Classic Bodybuilding competition SBFF SM 2019 Classic Bodybuilding -175 cm Winners.jpg
SBFF SM 2019 Classic Bodybuilding competition

Progressive overload is a method of strength training and hypertrophy training that advocates for the gradual increase of the stress placed upon the musculoskeletal and nervous system. [1] The principle of progressive overload suggests that the continual increase in the total workload during training sessions will stimulate muscle growth and strength gain by muscle hypertrophy. [2] This improvement in overall performance will, in turn, allow the athlete to keep increasing the intensity of their training sessions.

Contents

History

The method was developed by Thomas Delorme, M.D. while he rehabilitated soldiers after World War II. [3] At the time, most medical doctors believed that weightlifting should be avoided because any type of extreme effort was not desirable for the heart. [2] However, Dr. Thomas Delorme had been active in weight lifting for years and believed that it could have beneficial effects to rehabilitation. In 1944, Delorme was working at the Gardiner General Hospital in Chicago, when he met Sergeant Thaddeus Kawalek, an old army veteran that was struggling with a knee injury. Coincidentally, Kawalek was also a weightlifter and he believed in Delorme's theory about the benefits of the sport. From there, Kawalek became Delorme's first patient in his alternative treatment. The results exceeded expectation. Kawalek recovered much faster than patients in similar conditions and regained full use of his knee. [2] Today, the technique is recognized as a fundamental principle for success in various forms of strength training programs including fitness training, weight lifting, high intensity training and physical therapy programs.

The first mention of "Progressive overload" in history is associated with Milo of Croton (late 6th century BC), who was a famous athlete of Ancient Greece. Per the legend, when Milo was an adolescent a neighbor of his had a newborn calf. Milo, already a strapping lad, saw the small calf, lifted it onto his shoulders, and walked around for a while. He then put the calf back down and went home.

The next day Milo returned and did the same thing. He continued this routine day after day. As the calf grew, so did Milo’s strength. His lifting each day prepared him to lift a little bit more the next day. At the end of four years, Milo was lifting a full-grown bull onto his shoulders.

Scientific principles

The goal of strength-training programs is to increase one’s physical strength and performance. This is achieved through resistance training. By placing the exercise musculature under greater-than-normal demand, the body will start a natural adaptation process, improving its capabilities to endure that higher amount of stress. Neuromuscular adaptation will occur first, [4] which will already increase the individual’s strength when lifting. With consistency in the training sessions, what will follow will be an increase in overall muscle mass and the strengthening of connective tissue. [4]

Progressive overload not only stimulates muscle hypertrophy, but it also stimulates the development of stronger and denser bones, ligaments, tendons and cartilage. [4] Progressive overload also incrementally increases blood flow to regions of the body exercised and stimulates more responsive nerve connections between the brain and the muscles involved. In fact, studies suggest that the increase in muscle contraction force, caused by resistance training, happens partially due to an increase in the responsiveness and efficacy of the neural system. [5]

According to recent[ when? ] studies, progressive overload may also be beneficial for the overall health of the individual since it is a good method to increase muscle strength, which was found to decrease the risk of all-cause mortality regardless of muscle mass. [6]

Conversely, decreased use of the muscle results in incremental loss of mass and strength, known as muscular atrophy (see Atrophy and Muscle atrophy). Sedentary people often lose a pound or more of muscle annually. [ citation needed ]

The loss of 10 pounds of muscle per decade is one consequence of a sedentary lifestyle. The adaptive processes of the human body will only respond if continually called upon to exert greater force to meet higher physiological demands. [7]

Methodology

In order to minimize injury and maximize results, the novice begins at a comfortable level of muscular intensity and advances towards overload of the muscles over the course of the exercise program. [7] [8] Progressive overload requires a gradual increase in volume, intensity, frequency or time in order to achieve the targeted goal of the user. In this context, volume and intensity are defined as follows: [8]

This technique results in greater gains in physical strength and muscular growth, [9] but there are limits. An excess of training stimuli can lead to the problem of overtraining. [10] Overtraining is the decline in training performance over the course of a training program, often accompanied by an increased risk of illness or injury or a decreased desire to exercise. To help avoid this problem, the technique of periodization is applied. Periodization can apply different load progression strategies depending on individual fitness goals. Periodization in the context of fitness or strength training programs means scheduling for adequate recovery time between training sessions, and for variety over the course of a long-term program. Motivation can be maintained by avoiding the monotony of repeating identical exercise routines.

Example

Through experimentation the athlete can learn what the maximum number of repetitions they can perform is (albeit while maintaining good posture) at a specific weight. An individual who finds he can do 8 repetitions of the bench press exercise with 50 kg can use this as his baseline. From that point on, the athlete should focus on improving one of the categories mentioned in the methodology section: volume, intensity, frequency, or interval duration. In this example, the athlete could do the same number of repetitions but with 52 kg. Eventually, through the body's natural adaptation process, an increase in strength and muscle mass will allow the subject to continue increasing the weight. [11]

Related Research Articles

<span class="mw-page-title-main">Calisthenics</span> Form of strength training exercises

Calisthenics or callisthenics (/ˌkælɪsˈθɛnɪk/) is a form of strength training that utilizes an individual's body weight as resistance to perform multi-joint, compound movements with little or no equipment.

<span class="mw-page-title-main">Exercise</span> Bodily activity intended to improve health

Exercise is intentional physical activity to enhance or maintain fitness and overall health.

Overtraining occurs when a person exceeds their body's ability to recover from strenuous exercise. Overtraining can be described as a point where a person may have a decrease in performance and plateauing as a result of failure to consistently perform at a certain level or training load; a load which exceeds their recovery capacity. People who are overtrained cease making progress, and can even begin to lose strength and fitness. Overtraining is also known as chronic fatigue, burnout and overstress in athletes. It is suggested that there are different variations of overtraining, firstly monotonous program over training suggest that repetition of the same movement such as certain weight lifting and baseball batting can cause performance plateau due to an adaption of the central nervous system which results from a lack of stimulation. A second example of overtraining is described as chronic overwork type training where the subject may be training with too high intensity or high volume and not allowing sufficient recovery time for the body. Up to 10% of elite endurance athletes and 10% of American college swimmers are affected by overtraining syndrome.

<span class="mw-page-title-main">Strength training</span> Performance of physical exercises designed to improve strength

Strength training, also known as weight training or resistance training, involves the performance of physical exercises that are designed to improve strength and endurance. It is often associated with the lifting of weights. It can also incorporate a variety of training techniques such as bodyweight exercises, isometrics, and plyometrics.

<span class="mw-page-title-main">High-intensity interval training</span> Exercise strategy

High-intensity interval training (HIIT) is a training protocol alternating short periods of intense or explosive anaerobic exercise with brief recovery periods until the point of exhaustion. HIIT involves exercises performed in repeated quick bursts at maximum or near maximal effort with periods of rest or low activity between bouts. The very high level of intensity, the interval duration, and number of bouts distinguish it from aerobic (cardiovascular) activity, because the body significantly recruits anaerobic energy systems. The method thereby relies on "the anaerobic energy releasing system almost maximally".

<span class="mw-page-title-main">Shin splints</span> Medical condition

A shin splint, also known as medial tibial stress syndrome, is pain along the inside edge of the shinbone (tibia) due to inflammation of tissue in the area. Generally this is between the middle of the lower leg and the ankle. The pain may be dull or sharp, and is generally brought on by high-impact exercise that overloads the tibia. It generally resolves during periods of rest. Complications may include stress fractures.

One-repetition maximum in weight training is the maximum amount of weight that a person can possibly lift for one repetition. It may also be considered as the maximum amount of force that can be generated in one maximal contraction.

In weight training, training to failure is repeating an exercise to the point of momentary muscular failure, i.e. the point where the neuromuscular system can no longer produce adequate force to overcome a specific workload. Two systematic reviews published in 2021 found no benefit to training to failure on hypertrophy, while one of the reviews found some evidence that not-to-failure training is superior for strength.

Circuit training is a form of body conditioning that involves endurance training, resistance training, high-intensity aerobics, and exercises performed in a circuit, similar to high-intensity interval training. It targets strength building and muscular endurance. An exercise "circuit" is one completion of all set exercises in the program. When one circuit is completed, one begins the first exercise again for the next circuit. Traditionally, the time between exercises in circuit training is short and often with rapid movement to the next exercise.

A negative repetition is the repetition of a technique in weight lifting in which the lifter performs the eccentric phase of a lift. Instead of pressing the weight up slowly, in proper form, a spotter generally aids in the concentric, or lifting, portion of the repetition while the lifter slowly performs the eccentric phase for 3–6 seconds.

Complex training, also known as contrast training or post-activation potentiation training, involves the integration of strength training and plyometrics in a training system designed to improve explosive power. According to Jace Derwin:

Strength training and plyometric training are both effective measures for increasing athletic performance independent of each other, but a true program designed for power-based athletes needs to incorporate both disciplines. A study done in 2000 in the NSCA's Journal of Strength and Conditioning Research measured three different training protocols: strength training, plyometric training, and a combination of both. The group that used combined methods was the only group that showed significant increases in BOTH strength and power.

Electrical muscle stimulation (EMS), also known as neuromuscular electrical stimulation (NMES) or electromyostimulation, is the elicitation of muscle contraction using electric impulses. EMS has received an increasing amount of attention in the last few years for many reasons: it can be utilized as a strength training tool for healthy subjects and athletes; it could be used as a rehabilitation and preventive tool for people who are partially or totally immobilized; it could be utilized as a testing tool for evaluating the neural and/or muscular function in vivo. EMS has been proven to be more beneficial before exercise and activity due to early muscle activation. Recent studies have found that electrostimulation has been proven to be ineffective during post exercise recovery and can even lead to an increase in Delayed onset muscle soreness (DOMS).

<span class="mw-page-title-main">Outline of exercise</span> Overview of and topical guide to exercise

The following outline is provided as an overview of and topical guide to exercise:

<span class="mw-page-title-main">Muscle hypertrophy</span> Enlargement or overgrowth of a muscle organ

Muscle hypertrophy or muscle building involves a hypertrophy or increase in size of skeletal muscle through a growth in size of its component cells. Two factors contribute to hypertrophy: sarcoplasmic hypertrophy, which focuses more on increased muscle glycogen storage; and myofibrillar hypertrophy, which focuses more on increased myofibril size. It is the primary focus of bodybuilding-related activities.

Eccentric training is a type of strength training that involves using the target muscles to control weight as it moves in a downward motion. This type of training can help build muscle, improve athletic performance, and reduce the risk of injury. An eccentric contraction is the motion of an active muscle while it is lengthening under load. Eccentric training is repetitively doing eccentric muscle contractions. For example, in a biceps curl the action of lowering the dumbbell back down from the lift is the eccentric phase of that exercise – as long as the dumbbell is lowered slowly rather than letting it drop.

<span class="mw-page-title-main">Weightlifting</span> Sport or exercise

Weightlifting or weight lifting generally refers to physical exercises and sports in which people lift weights, often in the form of dumbbells or barbells. People engage in weightlifting for a variety of different reasons. These can include: developing physical strength; promoting health and fitness; competing in weightlifting sports; and developing a muscular and aesthetic physique.

Blood flow restriction training / Occlusion Training or Occlusion Training or KAATSU is an exercise and rehabilitation modality where resistance exercise, aerobic exercise or physical therapy movements are performed while using an Occlusion Cuff which is applied to the proximal aspect of the muscle on either the arms or legs. In this novel training method developed in Japan by Dr. Yoshiaki Sato in 1966, limb venous blood flow is restricted via the occlusion cuff throughout the contraction cycle and rest period. This result is partial restriction of arterial inflow to muscle, but, most significantly, it restricts venous outflow from the muscle. Given the light-load and strengthening capacity of BFR training, it can provide an effective clinical rehabilitation stimulus without the high levels of joint stress and cardiovascular risk associated with heavy-load training.

Physical exercise has been found to be associated with changes in androgen levels. In cross-sectional analyses, aerobic exercisers have lower basal total and free testosterone compared to the sedentary. Anaerobic exercisers also have lower testosterone compared to the sedentary but a slight increase in basal testosterone with resistance training over time. There is some correlation between testosterone and physical activity in the middle aged and elderly. Acutely, testosterone briefly increases when comparing aerobic, anaerobic and mixed forms of exercise. A study assessed men who were resistance trained, endurance trained, or sedentary in which they either rested, ran or did a resistance session. Androgens increased in response to exercise, particularly resistance, while cortisol only increased with resistance. DHEA increased with resistance exercise and remained elevated during recovery in resistance-trained subjects. After initial post-exercise increase, there was decline in free and total testosterone during resistance recovery, particularly in resistance-trained subjects. Endurance-trained subjects showed less change in hormone levels in response to exercise than resistance-trained subjects. Another study found relative short term effects of aerobic, anaerobic and combined anaerobic-aerobic exercise protocols on hormone levels did not change. The study noted increases in testosterone and cortisol immediately after exercise, which in 2 hours returned to baseline levels.

Velocity based training (VBT) is a modern approach to strength training and power training which utilises velocity tracking technology to provide rich objective data as a means to motivate and support real-time adjustments in an athlete's training plan. Typical strength and power programming and periodisation plans rely on the manipulation of reps, sets and loads as a means to calibrate training stressors in the pursuit of specific adaptations. Since the late 1990s, innovations in bar speed monitoring technology has brought velocity based training closer to the mainstream as the range of hardware and software solutions for measuring exercise velocities have become easier to use and more affordable. Velocity based training has a wide range of use cases and applications in strength and conditioning. These include barbell sports such as powerlifting and Olympic weightlifting and Crossfit, as well as rock climbing.Velocity based training is widely adopted across professional sporting clubs, with the data supporting many periodisation decisions for coaches in the weight room and on the field.

<span class="mw-page-title-main">Flywheel training</span> Type of strength training

Flywheel training is a type of strength training where the resistance required for muscle activation is generated by the inertia of a flywheel instead of gravity from weights as in traditional weight training.

References

  1. Taylor, Janet L.; Amann, Markus; Duchateau, Jacques; Meeusen, Romain; Rice, Charles L. (November 2016). "Neural Contributions to Muscle Fatigue: From the Brain to the Muscle and Back Again". Medicine and Science in Sports and Exercise. 48 (11): 2294–2306. doi:10.1249/MSS.0000000000000923. ISSN   0195-9131. PMC   5033663 . PMID   27003703.
  2. 1 2 3 Todd, Janice S.; Shurley, Jason P.; Todd, Terry C. (2012). "Thomas L. DeLorme and the Science of Progressive Resistance Exercise". Journal of Strength and Conditioning Research. 26 (11): 2913–2923. doi: 10.1519/JSC.0b013e31825adcb4 . ISSN   1064-8011. PMID   22592167.
  3. Kraemer, William J.; Fleck, Steven J. (2007). "Progressive Overload". Optimizing Strength Training: Designing Nonlinear Periodization Workouts. Human Kinetics. pp. 33–6. ISBN   978-0-7360-6068-4.
  4. 1 2 3 Kavanaugh, Ashley. "Conditioning Fundamentals" (PDF).
  5. Aagaard, Per; Simonsen, Erik B.; Andersen, Jesper L.; Magnusson, Peter; Dyhre-Poulsen, Poul (2002-06-01). "Neural adaptation to resistance training: changes in evoked V-wave and H-reflex responses". Journal of Applied Physiology. 92 (6): 2309–2318. doi:10.1152/japplphysiol.01185.2001. ISSN   8750-7587. PMID   12015341.
  6. Li, Ran; Xia, Jin; Zhang, Xi; Gathirua-Mwangi, Wambui Grace; Guo, Jianjun; Li, Yufeng; McKenzie, Steve; Song, Yiqing (March 2018). "Associations of Muscle Mass and Strength with All-Cause Mortality among US Older Adults". Medicine and Science in Sports and Exercise. 50 (3): 458–467. doi:10.1249/MSS.0000000000001448. ISSN   0195-9131. PMC   5820209 . PMID   28991040.
  7. 1 2 Kraemer WJ, Adams K, Cafarelli E, Dudley GA, Dooly C, Feigenbaum MS, Fleck SJ, Franklin B, Fry AC, Hoffman JR, Newton RU, Potteiger J, Stone MH, Ratamess NA, Triplett-McBride T (2002). "American College of Sports Medicine position stand. Progression models in resistance training for healthy adults". Medicine and Science in Sports and Exercise. 34 (2): 364–80. doi:10.1097/00005768-200202000-00027. PMID   11828249. S2CID   15039909.
  8. 1 2 American Academy of Family Physicians; American Academy of Orthopaedic Surgeons; American College of Sports Medicine; American Orthopaedic Society for Sports Medicine; American Osteopathic Academy of Sports Medicine; American Medical Society for Sports Medicine (2001). "The team physician and conditioning of athletes for sports: a consensus statement". Medicine and Science in Sports and Exercise. 33 (10): 1789–93. doi: 10.1097/00005768-200110000-00027 . PMID   11581568.
  9. "- YouTube". www.youtube.com. Archived from the original on 2021-12-19. Retrieved 2021-09-15.
  10. Fry, Andrew C. "Overtraining With Resistance Exercise" (PDF). American College of Sports Medicine. Archived from the original (PDF) on October 30, 2012.
  11. "Progressive Overload: The Concept You Must Know To Grow!". Bodybuilding.com. 2015-12-31. Retrieved 2020-04-11.

Further reading