Specificity of velocity in strength training
Twenty-one male volunteers (ages 23–25 years) were tested pre- and post training for maximal knee extension power at five specific speeds (1.05, 2.09, 3.14, 4.19, and 5.24 rad·s−1) with an isokinetic dynamometer. Subjects were assigned randomly to one of three experimental groups; group S, training at 1.05 rad·s−1 (n=8), group I, training at 3.14 rad·s−1 (n=8) or group F, training at 5.24 rad·s−1 (n=5). Subjects trained the knee extensors by performing 10 maximal voluntary efforts in group S, 30 in group I and 50 in group F six times a week for 8 weeks. Though group S showed significant increases in power at all test speeds, the percent increment decreased with test speed from 24.8% at 1.05 rad·s−1 to 8.6% at 5.24 rad·s−1. Group I showed almost similar increment in power (18.5–22.4 at all test speeds except at 2.09 rad·s−1 (15.4%). On the other hand, group F enhanced power only at faster test speeds (23.9% at 4.19 rad·s−1 and 22.8% at 5.24 rad·s−1).
Key wordsIsokinetic training Training velocity Average power Specificity
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- Caiozzo VJ, Perrine JJ, Edgerton VR (1981) Training-induced alterations of the in vivo force-velocity relationship of human muscle. J Appl Physiol: Respirat Environ Exercise Physiol 51: 750–754Google Scholar
- Clarke DH (1973) Adaptations in strength and muscular endurance resulting from exercise. In Wilmore JH (ed) Exercise sports sciences reviews. Academic Press, New York, pp 73–102Google Scholar
- Coyle EF, Feiring DC, Rotkis TC, Cote III RW, Roby FB, Lee W, Wilmore JH (1981) Specificity of power improvements through slow and fast isokinetic training. J Appl Physiol: Respirat Environ Physiol 51: 1437–1442Google Scholar
- Greger RJ, Edgerton VR, Perrine JJ, Campion DS, Debus C (1979) Torque-velocity relationships and muscle fiber composition in elite female athletes. J Appl Physiol: Respirat Environ Exercise Physiol 47: 388–392Google Scholar