TY - JOUR
T1 - Slow-Speed Compared with Fast-Speed Eccentric Muscle Actions Are Detrimental to Jump Performance in Elite Soccer Players In-Season
AU - Segers, Nick
AU - Waldron, Mark
AU - Howe, Louis P.
AU - Patterson, Stephen D.
AU - Moran, Jason
AU - Jones, Ben
AU - Kidgell, Dawson J.
AU - Tallent, Jamie
N1 - Publisher Copyright:
© 2022 Human Kinetics Publishers Inc.. All rights reserved.
PY - 2022/9
Y1 - 2022/9
N2 - Purpose: To examine the effect of fast-versus slow-speed eccentric-muscle-Action resistance training on lower-body strength, vertical jump height, sprint speed, and change-of-direction performance in elite soccer players during a competitive season. Methods: Twenty-Two elite soccer players, from a single team, were randomly assigned to groups that undertook either 1-(fast speed) or 4-second (slow speed) eccentric resistance training during the in-season period. A 5-week program was conducted during an elite top-division European League soccer season. Performance measures including predicted 1-repetition-maximum back squat, countermovement jump, 20-m sprint, and change of direction were tested before and after the intervention period. Total match and training running distance and muscle soreness were also recorded during each week of the intervention. Results: An analysis of covariance showed significant group effects (P = .01) for countermovement jump with a greater jump height in the 1-second fast-speed group postintervention (95% CI, 1.1 6.9 cm). Despite an overall increase in 1-repetition maximum pretraining to posttraining (95% CI, 10.0 15.3 kg, effect size 0.69), there were no significant differences (P .05) between groups after the intervention. Similarly, there were no differences between groups for change of direction, 20-m sprint, or muscle soreness. Conclusion: Faster eccentric muscle actions may be superior for increasing movements in elite soccer players inseason.
AB - Purpose: To examine the effect of fast-versus slow-speed eccentric-muscle-Action resistance training on lower-body strength, vertical jump height, sprint speed, and change-of-direction performance in elite soccer players during a competitive season. Methods: Twenty-Two elite soccer players, from a single team, were randomly assigned to groups that undertook either 1-(fast speed) or 4-second (slow speed) eccentric resistance training during the in-season period. A 5-week program was conducted during an elite top-division European League soccer season. Performance measures including predicted 1-repetition-maximum back squat, countermovement jump, 20-m sprint, and change of direction were tested before and after the intervention period. Total match and training running distance and muscle soreness were also recorded during each week of the intervention. Results: An analysis of covariance showed significant group effects (P = .01) for countermovement jump with a greater jump height in the 1-second fast-speed group postintervention (95% CI, 1.1 6.9 cm). Despite an overall increase in 1-repetition maximum pretraining to posttraining (95% CI, 10.0 15.3 kg, effect size 0.69), there were no significant differences (P .05) between groups after the intervention. Similarly, there were no differences between groups for change of direction, 20-m sprint, or muscle soreness. Conclusion: Faster eccentric muscle actions may be superior for increasing movements in elite soccer players inseason.
KW - change of direction
KW - football
KW - jumping
KW - lengthening contractions
KW - strength
UR - http://www.scopus.com/inward/record.url?scp=85138444160&partnerID=8YFLogxK
U2 - 10.1123/ijspp.2021-0542
DO - 10.1123/ijspp.2021-0542
M3 - Article
C2 - 35894997
AN - SCOPUS:85138444160
VL - 17
SP - 1425
EP - 1431
JO - International Journal of Sports Physiology and Performance
JF - International Journal of Sports Physiology and Performance
SN - 1555-0265
IS - 9
ER -