Does a loaded warm-up influence jump asymmetry and badminton-specific change of direction performance?

Yeung, Vincent, Bishop, Chris ORCID:, Turner, Anthony N. ORCID: and Maloney, Sean (2020) Does a loaded warm-up influence jump asymmetry and badminton-specific change of direction performance? International Journal of Sports Physiology and Performance . ISSN 1555-0265 [Article] (Accepted/In press)

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Purpose: Previously, it has been shown that loaded warm-up (LWU) can improve change of direction speed (CODS) in professional badminton players. However, the effect of asymmetry on CODS in badminton players and the influence of LWU on asymmetry has not been examined.

Methods: Twenty-one amateur badminton players (age: 29.5 ± 8.4; playing experience: 8.4 ± 4.2 years) completed two trials. In the first, they performed a control warm-up (CWU). In the second, they performed the same warm-up but with three exercises loaded with a weight vest (LWU). Following both warm-ups, players completed single leg jump (SLCMJ) and badminton-specific CODS tests.

Results: No significant differences between CWU and LWU were observed for CODS, SLCMJ or SLCMJ asymmetry. However, small effect sizes suggested faster CODS (mean difference: -5%; d = -0.32) and lower asymmetries (mean difference: -3%; d = -0.39) following LWU. Five players (24%) experienced CODS improvements greater than the minimum detectable change whilst two (10%) responded negatively. Asymmetry was not correlated with CODS following CWU (ρ = 0.079; p = 0.733) but was negatively associated with CODS after LWU (ρ = -0.491; p = 0.035).

Conclusion: LWU may prove a strategy to trial on an individual basis but generic recommendations should not be applied.

Item Type: Article
Research Areas: A. > School of Science and Technology > London Sport Institute > Strength and Conditioning at the London Sport Institute
Item ID: 30239
Useful Links:
Depositing User: Chris Bishop
Date Deposited: 26 May 2020 12:40
Last Modified: 28 May 2020 05:48

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