TY  - JOUR
AB  - © 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group. Purpose: This study investigated responses of single-leg balance and landing and countermovement jump (CMJ) following rugby union training and the specific components of training load associated with test decrement. Methods: Twenty-seven professional rugby union players performed CMJ, single-leg balance and landing tests on a 1000 Hz force plate at the beginning and end of training days. Training load was described by session RPE, Banister?s TRIMP, GPS total distance, high-speed running distance (>5.5 m s?1), relative speed and body load. Results: CMJ eccentric rate of force development (EccRFD) demonstrated moderate impairment post-training (ES ± 90%CL = ?0.79 ± 0.29, MBI = almost certainly). CMJ height (?0.21 ± 0.16, possible), concentric impulse (ConIMP) (?0.35 ± 0.17, likely) and single-leg balance sway velocity on the non-dominant leg (0.30 ± 0.26, possible) were also impaired. Regression analyses identified the strongest relationship between sRPE and impaired ConIMP (r = ?0.68 ± 21, ? = ?0.68) whilst other load measures explained 27?50% of the variance in balance and CMJ changes. Conclusions: CMJ variables representing altered movement strategy (EccRFD and IMP) may be useful for assessing acute neuromuscular fatigue in rugby union, though single-leg balance sway velocity may be an alternative when maximal tests are impractical.
AU  - Troester, JC
AU  - Jasmin, JG
AU  - Duffield, R
DA  - 2019/10/02
DO  - 10.1080/24733938.2019.1598621
EP  - 325
JO  - Science and Medicine in Football
PY  - 2019/10/02
SP  - 320
TI  - The influence of training load on postural control and countermovement jump responses in rugby union
VL  - 3
Y1  - 2019/10/02
Y2  - 2026/05/01
ER  -