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Effects of Eccentric Strength Training on Different Maximal Strength and Speed-Strength Parameters of the Lower Extremity.
J Strength Cond Res. 2015 Jul; 29(7):1837-45.JS

Abstract

The aim of this investigation was to analyze the effects of an eccentric strength training protocol using supramaximal loads (>1 repetition maximum [1RM]) on different maximal and explosive strength parameters of the lower extremity. The eccentric maximal strength (EX max), maximal isometric strength ("maximal voluntary contraction" [MVC]), 1RM, explosive strength ("rate of force development" [RFD]), countermovement jump, and squat jump height were tested before and after a training period of 6 weeks. The training group was composed of 15 individuals with low-weight training experience and a control group of 13 subjects, also with a low-weight training experience. The lower extremities were trained 3 days per week using a 45° leg press. Each training session comprised 5 sets of 3 repetitions with a 6-minute rest between each set. The training weights were adjusted continuously during each training session and between training sessions. In each case, a load was chosen that could be lowered unilaterally in a controlled manner by the subjects. For the concentric part of the exercise, 2 investigators lifted the weight to the starting position. After 6 weeks, strength training with supramaximal loads showed a significant increase in EX max (28.2%, p < 0.001) and 1RM (31.1%, p < 0.001). The increases observed in the control group were not significant. Changes in MVC, RFD, and vertical jump heights were not significant in both groups. The results of this study suggest that in untrained subjects, unilateral eccentric strength training in the leg press generates equal and significant improvements in unilateral eccentric and bilateral eccentric-concentric maximal strength, with a nonsignificant transfer to vertical jump performances and unilateral isometric force production.

Authors+Show Affiliations

1Department of Human Movement Science and Athletic Training, Institute of Sport Science, Johann Wolfgang Goethe-University, Frankfurt, Germany; 2Swimming Federation of the State Niedersachsen, Hannover, Germany; and 3German Luge and Bobsled Federation.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Evaluation Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24832973

Citation

Wirth, Klaus, et al. "Effects of Eccentric Strength Training On Different Maximal Strength and Speed-Strength Parameters of the Lower Extremity." Journal of Strength and Conditioning Research, vol. 29, no. 7, 2015, pp. 1837-45.
Wirth K, Keiner M, Szilvas E, et al. Effects of Eccentric Strength Training on Different Maximal Strength and Speed-Strength Parameters of the Lower Extremity. J Strength Cond Res. 2015;29(7):1837-45.
Wirth, K., Keiner, M., Szilvas, E., Hartmann, H., & Sander, A. (2015). Effects of Eccentric Strength Training on Different Maximal Strength and Speed-Strength Parameters of the Lower Extremity. Journal of Strength and Conditioning Research, 29(7), 1837-45. https://doi.org/10.1519/JSC.0000000000000528
Wirth K, et al. Effects of Eccentric Strength Training On Different Maximal Strength and Speed-Strength Parameters of the Lower Extremity. J Strength Cond Res. 2015;29(7):1837-45. PubMed PMID: 24832973.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of Eccentric Strength Training on Different Maximal Strength and Speed-Strength Parameters of the Lower Extremity. AU - Wirth,Klaus, AU - Keiner,Michael, AU - Szilvas,Elena, AU - Hartmann,Hagen, AU - Sander,Andre, PY - 2014/5/17/entrez PY - 2014/5/17/pubmed PY - 2016/1/26/medline SP - 1837 EP - 45 JF - Journal of strength and conditioning research JO - J Strength Cond Res VL - 29 IS - 7 N2 - The aim of this investigation was to analyze the effects of an eccentric strength training protocol using supramaximal loads (>1 repetition maximum [1RM]) on different maximal and explosive strength parameters of the lower extremity. The eccentric maximal strength (EX max), maximal isometric strength ("maximal voluntary contraction" [MVC]), 1RM, explosive strength ("rate of force development" [RFD]), countermovement jump, and squat jump height were tested before and after a training period of 6 weeks. The training group was composed of 15 individuals with low-weight training experience and a control group of 13 subjects, also with a low-weight training experience. The lower extremities were trained 3 days per week using a 45° leg press. Each training session comprised 5 sets of 3 repetitions with a 6-minute rest between each set. The training weights were adjusted continuously during each training session and between training sessions. In each case, a load was chosen that could be lowered unilaterally in a controlled manner by the subjects. For the concentric part of the exercise, 2 investigators lifted the weight to the starting position. After 6 weeks, strength training with supramaximal loads showed a significant increase in EX max (28.2%, p < 0.001) and 1RM (31.1%, p < 0.001). The increases observed in the control group were not significant. Changes in MVC, RFD, and vertical jump heights were not significant in both groups. The results of this study suggest that in untrained subjects, unilateral eccentric strength training in the leg press generates equal and significant improvements in unilateral eccentric and bilateral eccentric-concentric maximal strength, with a nonsignificant transfer to vertical jump performances and unilateral isometric force production. SN - 1533-4287 UR - https://www.unboundmedicine.com/medline/citation/24832973/Effects_of_Eccentric_Strength_Training_on_Different_Maximal_Strength_and_Speed_Strength_Parameters_of_the_Lower_Extremity_ L2 - https://doi.org/10.1519/JSC.0000000000000528 DB - PRIME DP - Unbound Medicine ER -