Interlimb asymmetry data in athletes with anterior cruciate ligament reconstruction: a comparison of different equations to interpret between-limb difference data
Article
Maestroni, L., Turner, A., Read, P., Bettariga, F., Fenu, G., Rosalio, A., Guastella, M. and Bishop, C. 2025. Interlimb asymmetry data in athletes with anterior cruciate ligament reconstruction: a comparison of different equations to interpret between-limb difference data. The Journal of Strength and Conditioning Research. https://doi.org/10.1519/JSC.0000000000005280
| Type | Article |
|---|---|
| Title | Interlimb asymmetry data in athletes with anterior cruciate ligament reconstruction: a comparison of different equations to interpret between-limb difference data |
| Authors | Maestroni, L., Turner, A., Read, P., Bettariga, F., Fenu, G., Rosalio, A., Guastella, M. and Bishop, C. |
| Abstract | Between-limb performance and biomechanical differences (i.e., inter-limb asymmetries) following anterior cruciate ligament (ACL) reconstruction are monitored and reported during rehabilitation and at the time of return to sport (RTS). However, different asymmetry equations can alter the magnitude and consistency of the asymmetry. 53 amateur athletes (16 females; 37 males; 28.5 ± 6.7 years; 177.1 ± 6.5 cm; 75.3 ± 10.8 kg) at a median of 28.1 months post ACL reconstruction completed a strength and vertical jump assessment including 5RM box squat, RFESS, leg extension and CMJ, SLCMJ and SLDJ. Large significant differences (ƞ2 = 0.14 to 0.44) were found between unilateral equations for each variable assessed, and between bilateral equations (ƞ2 = 0.17 to 0.34) for CMJ concentric and eccentric impulse asymmetries. Small to large significant pairwise differences were present between each equation and variable in unilateral tasks (d = 0.46 to 2.30). For the CMJ, large significant pairwise differences were also found between most equations for CMJ concentric and eccentric impulse asymmetry (d = 0.99 to 3.04). We recommend the use of the Standard Percentage Difference (with direction) formula for unilateral tasks, and the Bilateral Asymmetry Index 1 (BAI 1) for bilateral tasks. |
| Keywords | knee; ACL rehabilitation criteria; return to sport |
| 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 | 05 Dec 2025 |
| Publication process dates | |
| Accepted | 07 Aug 2025 |
| Deposited | 08 Aug 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 The Journal of Strength and Conditioning Research. The published version of record Maestroni, Luca; Turner, Anthony; Read, Paul; Bettariga, Francesco; Fenu, Giulia; Rosalia, Angelo; Guastella, Matteo; Bishop, Chris. Interlimb Asymmetry Data in Athletes With Anterior Cruciate Ligament Reconstruction: A Comparison of Different Equations to Interpret Between-Limb Difference Data. Journal of Strength and Conditioning Research ():10.1519/JSC.0000000000005280, December 5, 2025. | DOI: 10.1519/JSC.0000000000005280 is available online at: https://journals.lww.com/nsca-jscr/abstract/9900/interlimb_asymmetry... and https://doi.org/10.1519/jsc.0000000000005280 |
| Digital Object Identifier (DOI) | https://doi.org/10.1519/JSC.0000000000005280 |
| PubMed ID | 41359911 |
| Language | English |
https://repository.mdx.ac.uk/item/292209
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