Lee, J, Robshaw, DC and Erskine, RM (2024) High-intensity resistance training and collagen supplementation improve patellar tendon adaptations in professional female soccer athletes. Experimental Physiology. ISSN 0958-0670

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Abstract

We investigated whether 10 weeks’ pre-season soccer training (including high-intensity resistance exercise, RE) with hydrolysed collagen (COL) supplementation would confer greater changes in patellar tendon (PT) mechanical and material properties compared to placebo (PLA) in professional female soccer athletes. Eleven athletes from the first team squad of a Football Association Women’s Championship soccer club volunteered to participate in this study (age: 25.7±4.2 years; height: 1.68±0.04m; mass: 64.0±4.6kg). Participants were pair-matched for baseline knee extensor (KE) maximum isometric voluntary contraction (MIVC) torque, age, height, and mass, and randomly assigned them to COL (n=6) or PLA groups (n=5). Participants were given 30g COL, or energy-matched (36.5g maltodextrin, 8.4g fructose) PLA, plus 500mg vitamin C before each training session, which comprised high-intensity lower-limb RE, plyometric or pitch-based exercise 3 days/week for 10 weeks during pre-season. We assessed KE-MIVC torque and PT properties using isokinetic dynamometry and ultrasonography before and after the intervention. PT stiffness (COL, +15.4 ± 3.1% [d=0.81] vs. PLA, +4.6 ± 3.0% [d=0.32], P=0.002) and Young’s modulus (COL, +14.2 ± 4.0% [d=0.65] vs. PLA, +3.4 ± 2.8% [d=0.15], P=0.004) increased more in COL than PLA. There was a main effect of training on PT cross-sectional area (P=0.027) but no interaction effect (P=0.934). To conclude, 10 weeks' pre-season soccer training (incorporating high-intensity RE) with 30g COL increased PT stiffness and Young's modulus more than training alone in professional female soccer athletes. This has positive implications for improving athletic performance and mitigating injury risk.

Item Type:	Article
Uncontrolled Keywords:	0606 Physiology; 1106 Human Movement and Sports Sciences; 1116 Medical Physiology; Physiology
Subjects:	R Medicine > RC Internal medicine > RC1200 Sports Medicine G Geography. Anthropology. Recreation > GV Recreation Leisure > GV561 Sports
Divisions:	Sport & Exercise Sciences
Publisher:	Wiley Open Access
SWORD Depositor:	A Symplectic
Date Deposited:	30 Aug 2024 14:15
Last Modified:	30 Aug 2024 14:15
DOI or ID number:	10.1113/EP092106
URI:	https://researchonline.ljmu.ac.uk/id/eprint/24051

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