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Improved maximal strength is not associated with improvements in sprint time or jump height in high-level female football players: a clusterrendomized controlled trial

Permanent link
https://hdl.handle.net/10037/16219
DOI
https://doi.org/10.1186/s13102-019-0133-9
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Date
2019-09-17
Type
Journal article
Tidsskriftartikkel
Peer reviewed

Author
Pedersen, Sigurd; Heitmann, Kim Arne; Sagelv, Edvard Hamnvik; Johansen, Dag; Pettersen, Svein Arne
Abstract
Background - Maximal strength increments are reported to result in improvements in sprint speed and jump height in elite male football players. Although similar effects are expected in females, this is yet to be elucidated. The aim of this study was to examine the effect of maximal strength training on sprint speed and jump height in high-level female football players.

Methods - Two female football teams were team-cluster-randomized to a training group (TG) performing maximal strength training (MST) twice a week for 5 weeks, or control group (CG) doing their regular pre-season preparations. The MST consisted of 3–4 sets of 4–6 repetitions at ≥85% of 1 repetitions maximum (1RM) in a squat exercise. Sprint speed and jump height were assessed in 5-, 10- and 15 m sprints and a counter-movement jump (CMJ) test, respectively. Nineteen participants in TG (18.3 ± 2.7 years) and 14 in CG (18.3 ± 2.4 years) completed pre- and posttests and were carried forward for final analyses.

Results - There was no improvement in neither of the sprint times (p > 0.36), nor jump height (p = 0.87). The players increased their 1RM in squats (main of effect of time: p < 0.00, pη2 = 0.704), and an interaction effect of time x group was observed (p < 0.00, pη2 = 0.516) where the TG increased their 1RM more than the CT (between subjects effects: p < 0.001, pη2 = 0.965).

Conclusions - MST improved maximal strength in female football players to a large extent; however, the improvement in maximal strength did not result in any transference to sprint speed or jump height.

Is part of
Pedersen, S. (2021). Training and influence of maximal strength in football players - With specific emphasis on females. (Doctoral thesis). https://hdl.handle.net/10037/22920.
Publisher
BMC
Citation
Pedersen, S., Heitmann, K.A., Sagelv, E.H., Johansen, D. & Pettersen, S.A. (2019). Improved maximal strength is not associated with improvements in sprint time or jump height in high-level female football players: a clusterrendomized controlled trial. BMC sports science, medicine and rehabilitation, 11:20. https://doi.org/10.1186/s13102-019-0133-9
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  • Artikler, rapporter og annet (Idrettshøgskolen) [80]

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