Adaptation mechanisms of the knee extensors contractile properties in response to short-term stretch-shortening exercise training.
| Autor: | Négyesi, János, Váczi, Márk, Magyar, Olivér Mátyás, Pantovi, Milan, Tihanyi, József, Rácz, Levente |
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| Předmět: |
KNEE physiology
PHYSIOLOGICAL adaptation ANALYSIS of variance CONFIDENCE intervals STATISTICAL correlation EXERCISE physiology EXERCISE tests RANGE of motion of joints MULTIVARIATE analysis MUSCLE contraction PROBABILITY theory STATISTICS STRETCH (Physiology) T-test (Statistics) PLYOMETRICS DATA analysis MULTIPLE regression analysis RANDOMIZED controlled trials INTRACLASS correlation |
| Zdroj: | Isokinetics & Exercise Science; 2017, Vol. 25 Issue 1, p65-72, 8p, 1 Black and White Photograph, 2 Charts, 1 Graph |
| Abstrakt: | BACKGROUND: The effects of stretch-shortening cycle (SSC) training are well-described in the literature but the mechanism of how it changes the characteristics of the SSC moment-time curve and contraction velocity is unknown. OBJECTIVE: The purpose of the present study was to investigate the adaptation mechanisms of the knee extensor contractile properties in response to a short-term unilateral SSC exercise training. METHODS: Twenty-four subjects (22.9 ± 2.4 years) were randomised to an experimental or control group. A custom-built dynamometer was used to test the mechanical properties of the quadriceps muscle. Each subject participated in the pre-, and post-test session. Subjects in the experimental group participated in nine training sessions and performed maximal voluntary stretch-shortening cycle contractions on the dynamometer. Changes in the knee extensor contractile properties were measured from an SSC curve. RESULTS: Multivariate analysis of variance (MANOVA) revealed a significant multivariate effect for the measured variables in relation to group assignment. SSC exercise training significantly changed concentric moment (M |
| Databáze: | Complementary Index |
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