Do Plantar-Flexor Muscle Structure and Function Contribute to Medial Tibial Stress Syndrome in Long-Distance Runners? A Case Report.

Autor:	Mattock JPM; Biomechanics Research Laboratory, School of Medical, Indigenous and Health Sciences, Faculty of Science, Medicine & Health, University of Wollongong, Australia., Steele JR; Biomechanics Research Laboratory, School of Medical, Indigenous and Health Sciences, Faculty of Science, Medicine & Health, University of Wollongong, Australia., Mickle KJ; Applied Sports Science and Exercise Testing Laboratory, School of Biomedical Sciences and Pharmacy, The University of Newcastle, Callaghan, Australia.
Jazyk:	angličtina
Zdroj:	Journal of athletic training [J Athl Train] 2024 Nov 01; Vol. 59 (11), pp. 1095-1099.
DOI:	10.4085/1062-6050-0459.23
Abstrakt:	Two long-distance runners developed medial tibial stress syndrome (MTSS; male age = 26.3 years, female age = 47.5 years) after baseline assessment of plantar-flexor muscle structure and function and spatiotemporal running variables. B-mode ultrasound and lean leg girth characterized plantar-flexor muscle structure. Handheld dynamometry and a single-leg heel raise-to-failure protocol characterized plantar-flexor muscle function. Finally, spatiotemporal running variables were determined during a treadmill protocol. The 2 runners who developed MTSS demonstrated less plantar-flexor strength and endurance capacity than published comparative control data and marked variability in muscle structure. Reduced plantar-flexor strength and endurance capacity were thought to contribute to an impaired ability to resist tibial-bending moments during midstance due to earlier muscle fatigue. Earlier muscle fatigue could, in turn, contribute to increased tibial-bending moments and MTSS development. Therefore, assessing plantar-flexor muscle strength and endurance might help to identify athletes at risk of developing MTSS. (© by the National Athletic Trainers’ Association, Inc.)
Databáze:	MEDLINE
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