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Electromechanical response times and muscle elasticity in men and women

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Summary

The purpose of this study was to compare the delay in performance attributable to muscle elasticity in men and women. A group of 11 active young men age (mean, SE) 21.9, 0.7 years, stature 1.780, 0.020 m, body mass 76.4, 3.2 kg and 11 women age 20.9, 0.4 years, stature 1.670, 0.020 m and body mass 61.9, 2.6 kg provided written informed consent and were recruited to the study. In response to an acoustic signal delivered via headphones, the subjects performed a plantar flexion movement of the preferred leg as quickly as possible. A seated position ensured that the knee of the subject was flexed at a right angle and that the shank was vertical. The ball of the foot was on a force platform which was used detect the onset of muscle tension and the heel rested on a pressure pad which was used to identify movement. Surface electrodes sensed electromyographic activity (EMG) in the soleus muscle. Force platform output was captured by a digital storage oscilloscope and recorded via a y-t pen recorder for subsequent analysis. A separate timer was used to determine total reaction time (TRT). Premotor time (EMGT) was taken to be the time interval from the delivery of the signal to change in EMG. Electromechanical delay (EMD) was the time interval between the change in EMG and movement and was subdivided into force time (FT) i.e. the time interval between EMG and the onset of muscle tension and elastic charge time (CT) i.e. the time interval between the onset of muscle tension and movement. The subjects performed ten trials and in most cases the mean of ten readings was used to determine TRT, EMGT, EMD, FT and CT. There were no differences between men and women in TRT (163.3, 5.6 ms vs 176.2, 6.3 ms; P=0.149), EMGT (123.6, 6.0 ms vs 131.8, 6.4 ms; P=0.359) and FT (9.5, 1.1 ms vs 10.9, 1.2 ms; P=0.400) whereas there were differences in EMD (39.6, 1.2 ms vs 44.9, 2.0 ms; P=0.037) and CT (30.2, 1.3 ms vs 34.1, 1.3 ms; P=0.044). The results suggest that there are sex-linked differences in musculotendinous elasticity and these might in part account for observed performance differences.

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References

  • Alexander R McN, Bennet-Clark HC (1977) Storage of elastic strain energy in muscle and other tissues. Nature 265:114–117

    Google Scholar 

  • Bass A, Vondra R, Rath R, Vitek V (1975) M. quadriceps femoris of man. A muscle with an unusual enzyme activity pattern of energy supplying metabolism in mammals. Pflügers Arch Eur J Physiol 354:249–255

    Google Scholar 

  • Bell DG, Jacobs I (1986) Electro-mechanical response times and rate of force development in males and females. Med Sci Sports Exerc 18:31–36

    Google Scholar 

  • Brebner JMT, Welford AT (1980) Introduction: an historical background sketch. In: Welford AT (ed) Reaction times. Academic Press, London, pp 1–24

    Google Scholar 

  • Cavanagh PR, Komi PV (1979) Electromechanical delay in human skeletal muscle under concentric and eccentric contractions. Eur J Appl Physiol 42:159–163

    Google Scholar 

  • Drinkwater BL (1984) Women and exercise: physiological aspects. In: Terjung RJ (ed) Exercise and sport sciences reviews. Heath and Company, Mass., pp 21–52

    Google Scholar 

  • Fox EL, Bowers RW, Foss ML (1988) The physiological basis of PE and athletics, 4th edn. Saunders, Philadelphia

    Google Scholar 

  • Hedberg G, Jansson E (1976) Skeletal muscle fibre distribution, capacity and interest in different physical activities among students in high school. Umea, Sweden. Pedagogiska rapporter 54

  • Highet R (1989) Athletic amenorrhoea. An update on aetiology, complications and management. Sports Med 7:82–108

    Google Scholar 

  • Kamen G, Bredle D, Brown G, Wilkerson JE, Leeds E (1988) Electromechanical changes in rat gastrocnemius following exercise training and steroid administration. Res Q Exerc Sport 59:131–138

    Google Scholar 

  • Karlsson J, Sjödin B, Jacobs I, Kaiser P (1981) Relevance of muscle fibre type to fatigue in short intense and prolonged exercise in man. In: Porter R, Whelan J (eds) Human muscle fatigue: physiological mechanisms. Pitman, London, pp 59–70

    Google Scholar 

  • Komi PV (1984) Physiological and biomechanical correlates of muscle function: effects of muscle structure and stretch-shortening cycle on force and speed. In: Terjung RJ (ed) Exercise and sport sciences reviews. Heath and Company, Mass., pp 81–121

    Google Scholar 

  • Komi PV, Karlsson J (1979) Physical performance, skeletal muscle enzyme activities and fibre types in monozygous and dizygous twins of both sexes. Acta Physiol Scand [Suppl 462]

  • Kroll W (1974) Fractionated reaction and reflex time before and after fatiguing exercise. Med Sci Sports Exerc 6:260–266

    Google Scholar 

  • Krotkiewski M, Krall J, Karlsson J (1980) Effects of castration and testosterone substitution on body composition and muscle metabolism in rats. Acta Physiol Scand 109:233–237

    Google Scholar 

  • Lamb DR (1984) Physiology of exercise, 2nd edn. Macmillan, New York

    Google Scholar 

  • McIlwain JS, Hayes KC (1977) Dynamic properties of human motor units in the Hoffman-reflex and M response. Am J Phys Med Rehabil 56:122–135

    Google Scholar 

  • Morris AF, Beaudet SM (1980) Electromyographic latencies associated with rapid maximal force production in five different muscle groups in college adults. Am Corr Ther J 34:116–121

    Google Scholar 

  • Muro M, Nagata A (1985) The effects on electromechanical delay of muscle stretch of the human triceps surae. In: Winter DA, Norman RW, Wells RP, Hayes KC, Patla AE (eds) Biomechanics IX-A. Human Kinetics, Champaign, Ill., pp 86–90

    Google Scholar 

  • Nilsson J, Tesch P, Thorstensson A (1977) Fatigue and EMG of repeated fast voluntary contractions in man. Acta Physiol Scand 101:194–198

    Google Scholar 

  • Norman RW, Komi PV (1979) Electromechanical delay in skeletal muscle under normal movement conditions. Acta Physiol Scand 106:241–248

    Google Scholar 

  • Nygaard E (1981) Women and exercise — with special reference to muscle morphology and metabolism. In: Poortmans J, Niset G (eds) Biochemistry of exercise. University Park Press, Baltimore, pp 161–175

    Google Scholar 

  • Puhl JL, Harmon-Brown C (eds) (1986) The menstrual cycle and physical activity. Human Kinetics, Champaign, Ill.

    Google Scholar 

  • Reilly T (1987) Circadian rhythms and exercise. In: Macleod D, Maughan R, Nimmo M, Reilly T, Williams C (eds) Exercise: benefits, limitations and adaptations. Spon, London, pp 346–364

    Google Scholar 

  • Sale DG, Norman RW (1982) Testing strength and power. In: MacDougall JD, Wenger HA, Green HJ (eds) Physiological assessment of the elite athlete. Canadian Association of Sport Sciences. Mutual Press, pp 7–34

  • Schmidt RA, Stull GA (1970) Premotor and motor reaction time as a function of preliminary muscular tension. J Motor Behav 11:96–110

    Google Scholar 

  • Viitasalo JT, Komi PV (1981) Interrelationships between electromyographic, mechanical, muscle structure and reflex time measurements in man. Acta Physiol Scand 111:97–103

    Google Scholar 

  • Viitasalo JT, Saukkonen S, Komi PV (1980) Reproducibility of measurements of selected neuromuscular performance variables in man. Electromyogr Clin Neurophysiol 20:487–501

    Google Scholar 

  • Weiss AD (1965) The locus of reaction time change with sex, maturation and age. J Gerontol 20:60–64

    Google Scholar 

  • Wells CL, Plowman SA (1983) Sexual differences in athletic performance: biological or behavioural? Physician Sports Med 11:52–63

    Google Scholar 

  • Winter EM, Brookes FBC (1990) Electromechanical response times and muscle elasticity. J Physiol (Lond) 429:106P

    Google Scholar 

  • Woledge RC, Curtin NA, Homsher E (1985) Energetic aspects of muscular contraction. Academic Press, London

    Google Scholar 

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Winter, E.M., Brookes, F.B.C. Electromechanical response times and muscle elasticity in men and women. Eur J Appl Physiol 63, 124–128 (1991). https://doi.org/10.1007/BF00235181

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