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Article type: Research Article
Authors: Kimura, Iris F.a | Gulick, Dawn T.b; * | Gasiewski, Edwardc
Affiliations: [a] Graduate Athletic Training, Temple University, USA | [b] Institute for Physical Therapy Education, Widener University, One University Place, Chester, PA 19013, USA | [c] Temple University Graduate Student, Athletic Training Program, Temple University, USA
Note: [*] Corresponding author. Tel.: +1 610499 1287; Fax: +1 610 499 1231; E-mail: dawn.t.gulick@widener.edu.
Abstract: The purpose of the study was to investigate the influence of visual feedback on concentric peak torque of the quadriceps and hamstrings muscles at 60 and 180°·s−1. Testing was performed using the Biodex B-2000 isokinetic dynamometer. Fifteen male and 15 female asymptomatic subjects were each tested in the following randomly ordered conditions: (a) 60°·s−1 with visual feedback, (b) 60°·s−1 without visual feedback, (c) 180°·s−1 with visual feedback, (d) 180°·s−1 without visual feedback. Statistical analysis of two separate three-factor analyses of variance (ANOVA) with repeated measures (P<0.05) were used to examine the difference among test conditions. Results indicated an increase in quadriceps concentric peak torque data due to the visual feedback in both genders, but visual feedback increased hamstrings peak torque for male subjects only. Both quadriceps and hamstrings concentric peak torque data decreased as velocity increased.
Keywords: Isokinetics, Feedback, Muscle strength
DOI: 10.3233/IES-1997-6403
Journal: Isokinetics and Exercise Science, vol. 6, no. 4, pp. 209-214, 1997
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