Warming-Up and Stretching for Improved Physical Performance and Prevention of Sports-Related Injuries
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Competitive and recreational athletes typically perform warm-up and stretching activities to prepare for more strenuous exercise. These preliminary activities are used to enhance physical performance and to prevent sports-related injuries.
Warm-up techniques are primarily used to increase body temperature and are classified in 3 major categories: (a) passive warm-up — increases temperature by some external means; (b) general warm-up — increases temperature by nonspecific body movements; and (c) specific warm-up — increases temperature using similar body parts that will be used in the subsequent, more strenuous activity. The best of these appears to be specific warm-up because this method provides a rehearsal of the activity or event. The intensity and duration of warm-up must be individualised according to the athlete’s physical capabilities and in consideration of environmental factors which may alter the temperature response.
The majority of the benefits of warm-up are related to temperature-dependent physiological processes. An elevation in body temperature produces an increase in the dissociation of oxygen from haemoglobin and myoglobin, a lowering of the activation energy rates of metabolic chemical reactions, an increase in muscle blood flow, a reduction in muscle viscosity, an increase in the sensitivity of nerve receptors, and an increase in the speed of nervous impulses. Warm-up also appears to reduce the incidence and likelihood of sports-related musculoskeletal injuries.
Improving flexibility through stretching is another important preparatory activity that has been advocated to improve physical performance. Maintaining good flexibility also aids in the prevention of injuries to the musculoskeletal system. Flexibility is defined as the range of motion possible around a specific joint or a series of articulations and is usually classified as either static or dynamic. Static flexibility refers to the degree to which a joint can be passively moved to the end-points in the range of motion. Dynamic flexibility refers to the degree which a joint can be moved as a result of a muscle contraction and may therefore not be a good indicator of stiffness or looseness of a joint.
There are 3 basic categories of stretching techniques: (a) ballistic — which makes use of repetitive bouncing movements; (b) static — which stretches the muscle to the point of slight muscle discomfort and is held for an extended period; and (c) proprioceptive neuromuscular facilitation — which uses alternating contractions and stretching of the muscles. Each of these stretching methods is based on the neurophysiological phenomenon involving the stretch reflex. The muscle spindle and Golgi tendon organ are receptors sensitive to changes in muscle length and tension and are activated during stretching. Because ballistic, static, and proprioceptive neuromuscular facilitation stretching techniques produce different responses from the stretch reflex, the relative effectiveness of these stretching methods also varies.
Studies comparing the effectiveness of the various stretching techniques have been confusing and contradictory. However, the majority of the information on this topic tends to support the use of proprioceptive neuromuscular facilitation techniques for providing the best improvements in flexibility.
KeywordsMuscle Spindle Antagonist Muscle Hamstring Muscle Static Stretch Golgi Tendon Organ
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- Awad, A. and Kotke, F.: Effectiveness of myotatic reflex facilitation in augmenting rate of increase in muscular strength due to brief maximum exercise. Archives of Physical Medicine and Rehabilitation 47: 23–29 (1964).Google Scholar
- Åstrand, P.O. and Rodahl, K.: Textbook of Work Physiology. (McGraw-Hill, New York 1977).Google Scholar
- Beaulieu, J.E.: Stretching for All Sports (Athletic Press, Pasadena 1980).Google Scholar
- Beaulieu, J.E.: Developing a stretching program. Physician and Sportsmedicine 9: 59–69 (1981).Google Scholar
- Bergh, U.: Human power at subnormal body temperatures. Acta Physiologica Scandinavica 478 (Suppl.): 1–39 (1980).Google Scholar
- Blanz, F.: Keskittymistapaht-uma; in Blanz et al. (Eds) Urheituvalmenuk-sen psykologiaa, pp. 82–86 (Suomen Valtakunnan Urheiluiittory, Helsinki 1973).Google Scholar
- Bobath, B.: The treatment of motor disorders of pyramidal and extrapyramidal origin by reflex inhibition and by facilitation of movements. Psychotherapy 41: 146 (1955).Google Scholar
- Brunnstrom, S.: Movement Therapy in Hemiplegia (Harper and Row, New York 1970).Google Scholar
- Carlile, F.: Effect of preliminary passive warming on swimming performance. Research Quarterly 27: 143–151 (1956).Google Scholar
- Cornelius, W.L.: Two effective flexibility methods. Athletic Training 16: 23–25 (1981).Google Scholar
- Cureton, T.K.: Flexibility as an aspect of physical fitness. Research Quarterly 12 (Suppl.): 381–394 (1941).Google Scholar
- deVries, H.: Prevention of muscular distress after exercise. Research Quarterly 32: 177–185 (1961).Google Scholar
- deVries, H.A.: Evaluation of static stretching procedures for improvement of flexibility. Research Quarterly 33: 222–228 (1962).Google Scholar
- deVries, H.A.: Physiology of Exercise for Physical Education and Athletics (William C. Brown, Dubuque 1980).Google Scholar
- Hill, A.V.: Living Machinery (Harcourt, Brace, and World, New York 1927).Google Scholar
- Holland, G.J.: The physiology of flexibility: A review of the literature. Kinesiology Reviews: 49–62 (1968).Google Scholar
- Jensen, C. and Fisher, G.: Scientific Basis of Athletic Conditioning (Lea and Febiger, Philadelphia 1979).Google Scholar
- Karvonen, J.: Warming up and its physiological effects. Acta Universitatis Ouluensis. Series D, No. 31. Pharmacologica et Physiologica, No. 6(1978).Google Scholar
- Knott, M. and Voss, D.E.: Proprioceptive Neuromuscular Facilitation: Patterns and Technique (Harper and Row, New York 1968).Google Scholar
- Le Ban, M.M.: Collagen tissue: Implications of its response to stress in vitro. Archives of Physical Medicine and Rehabilitation 43: 461–466 (1962).Google Scholar
- Leighton, J.: A simple and objective and reliable measure of flexibility. Research Quarterly 13: 205–216 (1942).Google Scholar
- Leighton, J.: Flexibility characteristics of males ages 10–18. Archives of Physical Medicine and Rehabilitation 34: 494–499 (1956).Google Scholar
- Logan, G. and Egstrom, G.: The effects of slow and fast stretching on the sacrofemoral angle. Journal of the Association of Physical and Mental Rehabilitation 15: 85–89 (1961).Google Scholar
- Malareki, I.: Investigation on physiological justification of so-called ‘warming-up’ Acta Physiologica Poland 5: 543–546 (1954).Google Scholar
- Massey, B.H.; Johnson, W.R. and Kramer, G.F.: Effect of warm-up exercise upon physical performance using hypnosis to control the psychological variable. Research Quarterly 32: 63–71 (1961).Google Scholar
- Matthew, D.; Shaw, V. and Bohenen, M.: Hip flexibility of college women as related to length of body segments. Research Quarterly 28: 352–356 (1975).Google Scholar
- McArdle, W.D.; Katch, F.I. and Katch, V.L.: Exercise Physiology: Energy, Nutrition, and Human Performance (Lea and Febiger, Philadelphia 1981).Google Scholar
- McCue, B.: Flexibility measurements of college-age women. Research Quarterly 24: 376–384 (1953).Google Scholar
- Mellerowicz, H. and Hansen, G.: Encyclopedia of Sports Science and Medicine (MacMillan, New York 1971).Google Scholar
- Moore, M.A. and Hutton, R.S.: Electromyographic investigation of muscle stretching techniques. Medicine and Science in Sport and Exercise 12: 322–329 (1980).Google Scholar
- Morehouse, L.E. and Miller, A.T.: Physiology of Exercise (C.V. Mosby, St Louis 1976).Google Scholar
- O’Neil, R.: Prevention of hamstring and groin strain. Athletic Training 11: 27–31 (1976).Google Scholar
- O’Connell, E.: The effect of slow stretching on flexibility. Paper presented to CAPHER Convention 1964, Bakersfield, California.Google Scholar
- Partridge, M.: Electromyographic demonstration of facilitation. Physical Therapy Review 5: 227 (1954).Google Scholar
- Prentice, W.E.: An electromyographic analysis of the effectiveness of heat or cold and stretching for inducing muscular relaxation. Journal of Orthopedics and Sports Physical Therapy 3: 133–140 (1982).Google Scholar
- Prentice, W.E.: A comparison of static stretching and PNF stretching for improving hip joint flexibility. Athletic Training 18: 56–59 (1983).Google Scholar
- Preo, L.: A study to ascertain the facilitory influence of the antagonistic muscle group on the contractual strength of the agonist muscle group at the knee and elbow (Published research paper, Southern Illinois University 1967).Google Scholar
- Puni, A.C.: Psychological Preparation for Sports Contests. Figkultura: Sport, Moscow, USSR (1969).Google Scholar
- Rood, M.: Neurophysiology reactions as a basis of physical therapy. Physical Therapy Journal 34: 444 (1954).Google Scholar
- Saltin, B. and Hermansen, L.: Esophagel, rectal, and muscle temperature during exercise. Journal of Applied Physiology 25: 679–688 (1966).Google Scholar
- Sapega, A.A.; Quedenfeld, T.C.; Moyer, R.A. and Butler, R.A.: Biophysical factors in range-of-motion exercise. Physician and Sportsmedicine 9: 57–65 (1981).Google Scholar
- Schmidt, P.: Frustration und Vorstartperiode. Schweizerische Zeitschrift für Sport Medizin 23: 93 (1975).Google Scholar
- Shellock, F.G.: Physiological benefits of warm-up. Physician and Sportsmedicine 11: 134–142 (1983).Google Scholar
- Stafford, G. and Kelly, E.: Preventive and Corrective Physical Education (Ronald Press, New York 1958).Google Scholar
- Weber, S. and Kraus, H.: Passive and active stretching of muscles: Spring stretch and control group. Physical Therapy Reviews 29: 407–410 (1949).Google Scholar
- Wright, V. and Johns, R.J.: Physical factors concerned with the stiffness of normal and diseased joints. Bulletin of Johns Hopkins Hospital 106: 215–231 (1960).Google Scholar
- Zuntz, N.; Loewy, A.; Mueller, F. and Caspari, W.: Hahenklima and Bergwanderungen in ihrer Wirkung auf den Menschen. Deutsches Verlaghaus (Bong, Berlin 1906).Google Scholar