Velocity-specific and mode-specific effects of eccentric isokinetic training of the hamstrings

L. M. Ryan, P. S. Magidow, P. W. Duncan

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

This study examined velocity-specific and mode-specific effects of eccentric isokinetic training of the hamstrings. Female volunteers aged 21 to 40 were assigned to an exercise group (n = 17) or nonexercise group (n = 17). The average force of three concentric and eccentric hamstring contractions was evaluated pre- and post-training at 120°/sec ± 60°/sec. Subjects trained three times a week for six weeks with 15 maximal eccentric isokinetic contractions at 120°/sec. The ANOVA procedure and T-tests were used to determine the effects of training. A general linear model (GLM) for repeated measures determined the interaction effect between speed and mode. Results showed that the exercise group increased significantly (p < 0.0083) in eccentric force at all tested speeds and increased significantly (p < 0.0083) in concentric force at 120°/sec and 180°/sec. The GLM results showed no interaction effect between speed and mode. The study concluded that eccentric isokinetic training of the hamstrings at 120°/sec is not speed-specific at 120°/sec ± 60°/sec and is not mode-specific at 120°/sec and 180°/sec.

Original languageEnglish
Pages (from-to)33-39
Number of pages7
JournalJournal of Orthopaedic and Sports Physical Therapy
Volume13
Issue number1
Publication statusPublished - 1991
Externally publishedYes

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