Contractile properties of the human triceps surae with some observations on the effects of temperature and exercise

  • C. T. M. Davies
  • I. K. Mecrow
  • M. J. White
Article

Summary

The contractile properties of the triceps of five healthy male subjects (mean age 22 years) during electrically stimulated and voluntary isometric muscle contractions were investigated and some observations made on the effects of muscle heating and cooling and dynamic exercise.

The times to peak twitch tension (TPT) and half relaxation time (1/2RT) were 111±20 ms and 83±13 ms respectively. Heating and prior exercise decreased, and cooling severely prolonged, TPT and 1/2RT. Exercise and heating had no effect on supramaximal twitch tension (Pt0) but cooling the muscle to a temperature of 24.3‡ C reduced it by 52%. The effects of repetitive stimuli on Pt0 were dependent on frequency; at 0.2 Hz potentiation was observed but at 2 Hz, Pt0 was depressed under control conditions. Heating had no effect on these responses but cooling reversed the 2 Hz and abolished 0.2 Hz response. Post-tetanic potentiation of the twitch was observed under all conditions of measurement. At submaximal stimulation voltages, heating and exercise enhanced twitch and tetanic tensions, but at supramaximal voltages heating reduced tetanic tension (P0) at 10 Hz (by 115N), though not at 20 Hz. Exercise decreased P0 at both frequencies of stimulation. Cooling significantly reduced the maximal voluntary contraction and P0 at 20 Hz. At submaximal voltages, heating enhanced and cooling severely depressed tetanic tensions at high frequency (100 Hz) stimulation. A 2-min fatigue test was unaffected by heating but cooling reduced force generation at the onset of, and the decline of force during, the test.

It was concluded that studies of the contractile properties of human muscle in vivo should be based on supramaximal stimulation, and that temperature and prior exercise should be carefully standardised in order to obtain reliable and meaningful results.

Key words

Muscle Electrical stimulation Gastrocnemius Soleus Mechanical and dynamic responses to work Thermal effects 

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References

  1. Bawa P, Stein RB (1976) Frequency response of human soleus muscle. J Neurophysiol 39: 788–793PubMedGoogle Scholar
  2. Binkhorst RA, Hoofd L, Vissers ACA (1977) Temperature and force velocity relationship of human muscles. J Appl Physiol 42: 471–475PubMedGoogle Scholar
  3. Brust M, Costa HW (1967) Contractility of isolated human skeletal muscle. Arch Phys Med Rehabil 48: 543–555PubMedGoogle Scholar
  4. Buchthal F, Schmalbruch H (1970) Contraction times and fibre types in intact human muscle. Acta Physiol Scand 79: 435–452PubMedGoogle Scholar
  5. Buller AJ, Dornhorst AC, Edwards R, Kerr D, Whelan RF (1959) Fast and slow muscles in mammals. Nature 183: 1516–1517PubMedGoogle Scholar
  6. Buller AJ, Ranatunga KW, Smith JM (1965) Influence of temperature on the contractile characteristics of mammalian fast and slow twitch skeletal muscle. J Physiol 196: 82–83pGoogle Scholar
  7. Buller AJ, Kean CJ, Ranatunga KW, Smith JM (1971) Characteristics of post-tetanic depression of isometric twitch response in cat slow twitch muscle. J Physiol 217: 62–63pGoogle Scholar
  8. Burke RE, Levine DN, Tsairis P, Zajac FE (1973) Physiological types and histochemical profiles in motor units of the cat gastrocnemius. J Physiol 234: 723–748PubMedGoogle Scholar
  9. Burke D, Skuse NF, Lethlean AK (1974) Isometric contraction of abductor digiti minimi muscle in man. J Neurol Neurosurg Psychiatry 37: 825–834PubMedGoogle Scholar
  10. Clarke RSJ, Hellon RF, Lind AR (1958) The influence of muscle temperature on sustained contractions to fatigue. J Physiol 143: 454–473PubMedGoogle Scholar
  11. Close R, Hoh JFY (1965) The after effects of repetitive stimulation on the isometric twitch contraction of rat fast skeletal muscle. J Physiol 197: 461–477Google Scholar
  12. Close R, Hoh JFY (1968) Influence of temperature on isometric contractions of rat skeletal muscles. Nature 217: 1179–1180PubMedGoogle Scholar
  13. Cooper S, Eccles JC (1930) The isometric responses of mammalian muscles. J Physiol 69: 377–385Google Scholar
  14. Cullingham J, Lind AR, Morton RJ (1960) The maximal isometric tetanic tensions developed by mammalian muscle in situ, at different temperatures. Q J Exp Physiol 45: 142–157Google Scholar
  15. Davies CTM, White MJ (1982) Contractile properties of elderly triceps surae. J. Physiol (in press)Google Scholar
  16. Edwards RHT (1978) Physiological analysis of skeletal muscle weakness and fatigue. Clin Sci Mol Med 54: 463–470PubMedGoogle Scholar
  17. Edwards RHT, Harris RC, Hultman E, Kaijser L, Koh D, Nordesjo LO (1972) Effect of temperature on muscle energy metabolism and endurance during successive isometric contractions sustained to fatigue, of the quadriceps muscle in man. J Physiol 220: 335–352PubMedGoogle Scholar
  18. Edwards RHT, Hill DK, Jones DA (1975) Heat production and chemical changes during isometric contractions of the human quadriceps muscle. J Physiol 251: 303–315PubMedGoogle Scholar
  19. Edwards RHT, Hill DK, Jones DA, Merton PA (1977a) Fatigue of long duration in human skeletal muscle after exercise. J Physiol 272: 769–778PubMedGoogle Scholar
  20. Edwards RHT, Young A, Hosking GP, Jones DA (1977b) Human skeletal muscle function: description of tests and normal values. Clin Sci Mol Med 52: 283–290PubMedGoogle Scholar
  21. Hill DK (1972) Resting tension and the form of the twitch of rat skeletal muscle at low temperature. J Physiol 221: 161–171PubMedGoogle Scholar
  22. Ismail HM, Ranatunga KW (1978) Isometric tension development in a human skeletal muscle in relation to its working range of movement: the length-tension relation of biceps brachii muscle. Neurology 62: 595–604Google Scholar
  23. Lippold OCJ (1952) The relation between integrated action potential in a human muscle and its isometric tension. J Physiol 117: 492–499PubMedGoogle Scholar
  24. Marsden CD, Meadows JC (1970) Effect of adrenaline on the contraction of human muscle. J Physiol 207: 461–499Google Scholar
  25. Marsden CD, Meadows JC, Merton PA (1976) Fatigue in human muscle in relation to the number and frequency of motor impulses. J Physiol 258: 94–95pGoogle Scholar
  26. McComas AJ (1977) Neuromuscular function and disorders. Butterworth, LondonGoogle Scholar
  27. McComas AJ, Thomas HC (1968) Fast and slow twitch muscles in man. J Neurol Sci 7: 301–307PubMedGoogle Scholar
  28. Merton PA (1954) Voluntary strength and fatigue. J Physiol 123: 553–564PubMedGoogle Scholar
  29. O'Donovan MJ, Rowlerson A, Taylor A (1976) Contraction characteristics and histochemistry of motor units studied in perfused human limb muscles. J Physiol 257: 24–25pGoogle Scholar
  30. Rack PMH, Westbury DR (1969) The effects of length and stimulus rate on tension in the isometric cat soleus muscle. J Physiol 204: 443–460PubMedGoogle Scholar
  31. Ranatunga KW (1977) Influence of temperature on the characteristics of summation of isometric mechanical responses of mammalian skeletal muscle. Exp Neurol 54: 513–532CrossRefPubMedGoogle Scholar
  32. Saltin B, Hermansen L (1966) Eosophageal, rectal and muscle temperatures during exercise. J Appl Physiol 21: 1757–1762PubMedGoogle Scholar
  33. Saltin B, Henricksson J, Nygaard E, Andersen P, Jansson E (1977) Fibre types and metabolic potentials of skeletal muscles in sedentary man and endurance runners. Ann NY Acad Sci 301: 3–29PubMedGoogle Scholar
  34. Stephens JA, Taylor A (1972) Fatigue of maintained voluntary muscle contraction in man. J Physiol 220: 1–18PubMedGoogle Scholar
  35. Truong ZT, Wall BJ, Walker SM (1964) Effects of temperature on isometric contraction of rat muscle. Am J Physiol 207: 393–396PubMedGoogle Scholar

Copyright information

© Springer-Verlag 1982

Authors and Affiliations

  • C. T. M. Davies
    • 1
  • I. K. Mecrow
    • 1
  • M. J. White
    • 1
  1. 1.Department of Physiology and PharmacologyMedical School, Queen's Medical CentreNottinghamEngland

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