Journal of Applied Physiology, Vol 59, Issue 5 1446-1451, Copyright © 1985 by American Physiological Society

ARTICLES

Incompatibility of endurance- and strength-training modes of exercise

G. A. Dudley and R. Djamil

Twenty-two male and female subjects trained for 7 wk for endurance (group E), for strength (group IS), or for both strength and endurance (group C) to evaluate the effect of concurrent performance of both modes of training on the in vivo force-velocity relationship of human muscle and on aerobic power. Endurance training consisted of five 5-min sessions three times a week on cycle ergometer with a work load that approached the subject's peak cycle-ergometer O2 uptake (peak CE VO2). Strength training consisted of two 30-s sets of maximal knee extensions per day performed on an isokinetic dynamometer three times a week at a velocity of 4.19 rad X s-1. Group C performed the same training as groups IS and E, alternating days of strength and endurance training. Subjects (groups C and IS) were tested pre- and posttraining for maximal knee-extension torque at a specific joint angle (0.52 rad below horizontal) for seven specific angular velocities (0, 0.84, 1.68, 2.81, 3.35, 4.19, and 5.03 rad X s-1). Groups C and E were tested for peak CE VO2 pretraining, at 14-day intervals, and posttraining. Group IS showed significant increases in angle-specific maximal torque at velocities up to and including the training speed (4.19 rad X s-1). Group C showed increases (P less than 0.05) at velocities of 0, 0.84, and 1.68 rad X s-1 only. Peak CE VO2, when expressed in relative or absolute terms, increased (P less than 0.05) approximately 18% for both groups E and C.(ABSTRACT TRUNCATED AT 250 WORDS)

This article has been cited by other articles:

				S. Trappe, A. Creer, K. Minchev, D. Slivka, E. Louis, N. Luden, and T. Trappe Human soleus single muscle fiber function with exercise or nutrition countermeasures during 60 days of bed rest Am J Physiol Regulatory Integrative Comp Physiol, March 1, 2008; 294(3): R939 - R947. [Abstract] [Full Text] [PDF]

				S. Trappe, A. Creer, D. Slivka, K. Minchev, and T. Trappe Single muscle fiber function with concurrent exercise or nutrition countermeasures during 60 days of bed rest in women J Appl Physiol, October 1, 2007; 103(4): 1242 - 1250. [Abstract] [Full Text] [PDF]

				B. T. Workeneh, H. Rondon-Berrios, L. Zhang, Z. Hu, G. Ayehu, A. Ferrando, J. D. Kopple, H. Wang, T. Storer, M. Fournier, et al. Development of a Diagnostic Method for Detecting Increased Muscle Protein Degradation in Patients with Catabolic Conditions J. Am. Soc. Nephrol., November 1, 2006; 17(11): 3233 - 3239. [Abstract] [Full Text] [PDF]

				K McMillan, J Helgerud, R Macdonald, and J Hoff Physiological adaptations to soccer specific endurance training in professional youth soccer players Br. J. Sports Med., May 1, 2005; 39(5): 273 - 277. [Abstract] [Full Text] [PDF]

				M. J. Mador, E. Bozkanat, A. Aggarwal, M. Shaffer, and T. J. Kufel Endurance and Strength Training in Patients With COPD Chest, June 1, 2004; 125(6): 2036 - 2045. [Abstract] [Full Text] [PDF]

				J. F. Signorile, M. P. Carmel, S. J. Czaja, S. S. Asfour, R. O. Morgan, T. M. Khalil, F. Ma, and B. A. Roos Differential Increases in Average Isokinetic Power by Specific Muscle Groups of Older Women Due to Variations in Training and Testing J. Gerontol. A Biol. Sci. Med. Sci., October 1, 2002; 57(10): M683 - 690. [Abstract] [Full Text] [PDF]

				L. Paavolainen, K. Hakkinen, I. Hamalainen, A. Nummela, and H. Rusko Explosive-strength training improves 5-km running time by improving running economy and muscle power J Appl Physiol, May 1, 1999; 86(5): 1527 - 1533. [Abstract] [Full Text] [PDF]

				B. A. Dolezal and J. A. Potteiger Concurrent resistance and endurance training influence basal metabolic rate in nondieting individuals J Appl Physiol, August 1, 1998; 85(2): 695 - 700. [Abstract] [Full Text] [PDF]