Interference of strength development by simultaneously training for strength and endurance

  • Robert C. Hickson


The purpose of this study was to determine how individuals adapt to a combination of strength and endurance training as compared to the adaptations produced by either strength or endurance training separately. There were three exercise groups: a strength group (S) that exercised 30–40 min·day−1, 5 days·week−1, an endurance group (E) that exercised 40 min·day−1, 6 days·week−1; and an S and E group that performed the same daily exercise regimens as the S and E groups. After 10 weeks of training, VO2 max increased approx. 25% when measured during bicycle exercise and 20% when measured during treadmill exercise in both E, and S and E groups. No increase in VO2 max was observed in the S group. There was a consistent rate of development of leg-strength by the S group throughout the training, whereas the E group did not show any appreciable gains in strength. The rate of strength improvement by the S and E group was similar to the S group for the first 7 weeks of training, but subsequently leveled off and declined during the 9th and 10th weeks. These findings demonstrate that simultaneously training for S and E will result in a reduced capacity to develop strength, but will not affect the magnitude of increase in VO2 max.

Key words

Maximum oxygen uptake Weight training Heavy resistance training 


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  1. Allen TE, Byrd RJ, Smith DP (1976) Hemodynamic consequences of circuit weight training. Res Q 47: 299–306Google Scholar
  2. åstrand P-O, Rodahl K (1975) Textbook of work physiology. McGraw-Hill, New YorkGoogle Scholar
  3. Baldwin KM, Winder WW, Holloszy JO (1975) Adaptation of actomyosin ATPase in different types of muscle to endurance exercise. Am J Physiol 229: 422–426Google Scholar
  4. Barnard RJ, Edgerton VR, Peter JB (1970) Effects of exercise on skeletal muscle. II. Contractile properties. J Appl Physiol 28: 767–770Google Scholar
  5. Carlo JW, Max SR, Rifenberick DH (1975) Oxidative metabolism of hypertrophic skeletal muscle in the rat. Exp Neurol 48: 222–230Google Scholar
  6. Costill DL, Coyle EF, Fink WF, Lesmes GR, Witzmann FA (1979) Adaptations in skeletal muscle following strength training. J Appl Physiol 46: 96–99Google Scholar
  7. Fitts RH, Holloszy JO (1977) Contractile properties of rat soleus muscle. Effects of training and fatigue. Am J Physiol 233: C86-C91Google Scholar
  8. Gettman LR, Ayers JJ, Pollock ML, Jackson A (1978) The effect of circuit weight training on strength, cardiorespiratory function, and body composition of adult men. Med Sci Sports 10: 171–176Google Scholar
  9. Gollnick PD, Armstrong RB, Saubert IV, CW, Piehl K, Saltin B (1972) Enzyme activity and fiber composition in skeletal muscle of untrained and trained men. J Appl Physiol 33: 312–319Google Scholar
  10. Hickson RC, Bomze HA, Holloszy JO (1977) Linear increase in aerobic power induced by a strenuous program of endurance exercise. J Appl Physiol 42: 372–376Google Scholar
  11. Holloszy JO, Booth FW (1976) Biochemical adaptations to endurance exercise in muscle. Ann Rev Physiol 38: 273–295Google Scholar
  12. MacDougall JD, Ward GR, Sale DG, Sutton JR (1977) Biochemical adaptation of human skeletal muscle to heavy resistance training and immobilization. J Appl Physiol 43: 700–703Google Scholar
  13. Morrison DE (1976) Multivariate statistical methods. McGraw-Hill, New York, pp 153–159Google Scholar
  14. Oscai LB, Hollozsy JO (1971) Biochemical adaptations in muscle. II. Response of mitochondrial adenosine triphosphatase, creatine phosphokinase, and adenylate kinase activities in skeletal muscle to exercise. J Biol Chem 246: 6968–6972Google Scholar
  15. Thorstensson A, Sjödin B, Karlsson J (1975) Enzyme activities and muscle strength after “sprint training∝ in man. Acta Physiol Scand 94: 313–318Google Scholar
  16. Thorstensson A, Hultén B, Dobeln W von, Karlsson J (1976) Effect of strength training on enzyme activities and fibre characteristics in human skeletal muscle. Acta Physiol Scand 96: 392–398Google Scholar
  17. Wilkinson L (1975) REGM: A multivariate general linear hypothesis program for least squares analysis of multivariate data. Behav Res Methods Instrum 7: 485–486Google Scholar
  18. Wilmore JH, Davis JA, Norton AC (1976) An automated system for assessing metabolic and respiratory function during exercise. J Appl Physiol 40: 619–624Google Scholar
  19. Wilmore JH, Parr RB, Girandola RN, Ward P, Vodak PA, Barstow JJ, Pipes TV, Romero GT, Leslie P (1978) Physiological alterations consequent to circuit weight training. Med Sci Sports 10: 79–84Google Scholar
  20. Yuhasz MS (1965) Physical fitness and sports appraisal laboratory manual. University of Western Ontario,Google Scholar

Copyright information

© Springer-Verlag 1980

Authors and Affiliations

  • Robert C. Hickson
    • 1
  1. 1.Department of Physical EducationUniversity of Illinois at Chicago CircleChicagoUSA

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