Acute effects of repeated sprints on performance measures during the countermovement rebound jump
Article
Xu, J., Turner, A., Jordan, M., Comyns, T.M., Chavda, S. and Bishop, C. 2025. Acute effects of repeated sprints on performance measures during the countermovement rebound jump. The Journal of Strength and Conditioning Research. 39 (7), pp. e834-e842. https://doi.org/10.1519/JSC.0000000000005102
| Type | Article |
|---|---|
| Title | Acute effects of repeated sprints on performance measures during the countermovement rebound jump |
| Authors | Xu, J., Turner, A., Jordan, M., Comyns, T.M., Chavda, S. and Bishop, C. |
| Abstract | The countermovement rebound jump (CMRJ) test is an alternative to traditional jump assessments, providing unique insights into slow and fast stretch-shortening cycle mechanics. This study investigated the effects of repeated sprint-induced fatigue (4 sets of 6 × 40-m sprints with 20-s inter-repetition rest) on CMRJ performance metrics, including jump heights, time to take-off, ground contact time, reactive strength index modified (RSImod), reactive strength index (RSI), countermovement depth, and leg stiffness, measured at baseline, during sprints, and over a 24-hour recovery period. Twenty-four elite male team-sport athletes completed CMRJ tests before and after each sprint set, with additional assessments at 0.5-hour, 1-hour, and 24-hour post-sprints. Results showed significant reductions in CMRJ heights, RSImod, and RSI immediately following sprints (effect size = 0.27 to 1.78, p ≤ 0.040), indicating acute decrements in jump performance. Strategy-based metrics, such as leg stiffness and contact times, remained stable (effect size = 0.09 to 0.57, p ≥ 0.079), suggesting limited sensitivity to fatigue. These findings support the use of CMRJ outcome metrics to evaluate neuromuscular fatigue effectively in an athlete population with a non-invasive solution suitable for field settings. |
| Keywords | jump performance; neuromuscular fatigue; stretch-shortening cycle |
| Sustainable Development Goals | 3 Good health and well-being |
| Middlesex University Theme | Health & Wellbeing |
| Publisher | Lippincott, Williams & Wilkins |
| Journal | The Journal of Strength and Conditioning Research |
| ISSN | 1064-8011 |
| Electronic | 1533-4287 |
| Publication dates | |
| Online | 23 Apr 2025 |
| Jul 2025 | |
| Publication process dates | |
| Accepted | 02 Jan 2025 |
| Deposited | 06 Jan 2025 |
| Output status | Published |
| Accepted author manuscript | File Access Level Open |
| Copyright Statement | This is a pre-copyedited, author-produced version of an article accepted for publication in Journal of Strength and Conditioning Research. The published version of record - Xu, Jiaqing; Turner, Anthony; Jordan, Matthew J.; Comyns, Thomas M.; Chavda, Shyam; Bishop, Chris. Acute Effects of Repeated Sprints on Performance Measures During the Countermovement Rebound Jump. Journal of Strength and Conditioning Research 39(7):p e834-e842, July 2025. | DOI: 10.1519/JSC.0000000000005102 - is available online at: |
| Additional information | Published(online) ahead of print: April 23, 2025 |
| Web address (URL) | https://journals.lww.com/nsca-jscr/abstract/2025/07000/acute_effects_of_repeated_sprints_on_performance.13.aspx |
| Digital Object Identifier (DOI) | https://doi.org/10.1519/JSC.0000000000005102 |
| Language | English |
https://repository.mdx.ac.uk/item/1y7v37
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