ARE THIGH MUSCLE ACTIVATION PATTERNS DURING DROP JUMPS DEPENDENT ON SEX AND FATIGUE? A PILOT STUDY IN COMPETITIVE SOCCER PLAYERS

Authors

Gerda Strutzenberger, 1 Sports Medical Research Group, Department of Orthopedics, Balgrist University Hospital, University of Zurich, Switzerland; 2 University Centre for Prevention and Sports Medicine, Department of Orthopedics, Balgrist University Hospital, University of Zurich, Switzerland 3 Motion Analysis Zurich, Department of Orthopedics, Balgrist University Hospital, Children's Hospital, University of Zurich, SwitzerlandFollow
Laura Zehnder, 1 Sports Medical Research Group, Department of Orthopedics, Balgrist University Hospital, University of Zurich, Switzerland; 2 University Centre for Prevention and Sports Medicine, Department of Orthopedics, Balgrist University Hospital, University of Zurich, Switzerland 3 Motion Analysis Zurich, Department of Orthopedics, Balgrist University Hospital, Children's Hospital, University of Zurich, SwitzerlandFollow
Lana Mei Borcard, 1 Sports Medical Research Group, Department of Orthopedics, Balgrist University Hospital, University of Zurich, Switzerland; 2 University Centre for Prevention and Sports Medicine, Department of Orthopedics, Balgrist University Hospital, University of Zurich, Switzerland 3 Motion Analysis Zurich, Department of Orthopedics, Balgrist University Hospital, Children's Hospital, University of Zurich, SwitzerlandFollow
Johannes Scherr, 1 Sports Medical Research Group, Department of Orthopedics, Balgrist University Hospital, University of Zurich, Switzerland; 2 University Centre for Prevention and Sports Medicine, Department of Orthopedics, Balgrist University Hospital, University of Zurich, Switzerland 3 Motion Analysis Zurich, Department of Orthopedics, Balgrist University Hospital, Children's Hospital, University of Zurich, SwitzerlandFollow
Jörg Spörri, 1 Sports Medical Research Group, Department of Orthopedics, Balgrist University Hospital, University of Zurich, Switzerland; 2 University Centre for Prevention and Sports Medicine, Department of Orthopedics, Balgrist University Hospital, University of Zurich, Switzerland 3 Motion Analysis Zurich, Department of Orthopedics, Balgrist University Hospital, Children's Hospital, University of Zurich, SwitzerlandFollow

Category

Injury

Document Type

Paper

Abstract

The purpose of this study was to identify whether sex- and fatigue-dependent effects occur in muscle activation patterns during drop jumps. Therefore, 12 (5 female, 7 male) competitive soccer players performed five drop jumps (DJs) in a rested and fatigued state. Lactate, jump height, maximum knee flexion angle and the quadriceps to hamstring muscle activation ratio (QH_GRF ratio) were compared via repeated-measures MANOVA, and effect sizes were used for interpretation. In the fatigued state, jump height and maximum knee flexion angles were reduced (large effect), and the left limb showed an non-significant medium effect towards an increased QH_GRF ratio. Additionally, a sex-specific medium effect of the QH_GRF ratio of the left limb indicates a higher QH_GRF ratio for males. This indicates a tendency towards a quadriceps-dominant landing strategy in at least one limb.

Recommended Citation

Strutzenberger, Gerda; Zehnder, Laura; Borcard, Lana Mei; Scherr, Johannes; and Spörri, Jörg (2022) "ARE THIGH MUSCLE ACTIVATION PATTERNS DURING DROP JUMPS DEPENDENT ON SEX AND FATIGUE? A PILOT STUDY IN COMPETITIVE SOCCER PLAYERS," ISBS Proceedings Archive: Vol. 40: Iss. 1, Article 163.
Available at: https://commons.nmu.edu/isbs/vol40/iss1/163