| Title | Stable vs. variable eccentric load. Do they induce different training and physical performance outcomes? |
|---|---|
| Authors | GALIANO DE LA ROCHA, CARLOS, Floria, Pablo , Munoz-Lopez, Alejandro , de Villarreal, Eduardo Saez , Nunez, Francisco Javier |
| External publication | Si |
| Means | Eur. J. Sport Sci. |
| Scope | Article |
| Nature | Científica |
| JCR Quartile | 2 |
| SJR Quartile | 1 |
| JCR Impact | 2.4 |
| SJR Impact | 1.078 |
| Web | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85138436865&doi=10.1080%2f17461391.2022.2118081&partnerID=40&md5=62a6a1049c06ea2cd1531d991818adf3 |
| Publication date | 02/09/2023 |
| ISI | 000853379600001 |
| Scopus Id | 2-s2.0-85138436865 |
| DOI | 10.1080/17461391.2022.2118081 |
| Abstract | Since most movements on the field require athletes to produce forces in variable and unpredictable contexts, the use of training programs based on identical repetitions of an exercise may not be optimal for movement transference. Therefore, the aim of this study was to analyse the effects of unexpected eccentric load variability during resistance training in team sport players. Sixty-three men were randomly allocated to two experimental groups (Variable (VTG) and stable (STG) training group) and control group: (CG) volunteered to participate in this study. Experimental groups trained with the same average load of half-squat exercise twice a week for six weeks using rotary inertial devices (RIDs) with (VTG) and without (STG) an unexpected variability of the load. The squat force was measured for every session with force plates. Counter-movement jump (CMJ), sprint, and change of direction performances were measured pre and post-test. CMJ performance improved for VTG (p = .014; ES = 0.7) and STG (p = .005; ES = 0.79) but not for CG. Exposure to high eccentric forces with RIDs lead athletes to improve physical performance in the trained force vector but, since RIDs induce in high levels of variability per se, increasing the level of variability of the exercise will not add benefits to physical performance and training outcomes. |
| Keywords | Athletic Performance; Exercise; Humans; Male; Muscle Strength; Physical Functional Performance; Resistance Training; adult; article; athlete; eccentric muscle contraction; exercise; human; human experiment; major clinical study; male; performance; physical performance; pretest posttest design; randomized controlled trial; resistance training; squatting (exercise); team sport; athletic performance; controlled study; muscle strength; physical performance |
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