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ORIGINAL ARTICLE
Gazzetta Medica Italiana - Archivio per le Scienze Mediche 2021 November;180(11):648-52
DOI: 10.23736/S0393-3660.19.04290-6
Copyright © 2019 EDIZIONI MINERVA MEDICA
lingua: Inglese
Influence of prophylactic ankle support on peak power of lower-limb performance
Junichiro YAMAUCHI 1 ✉, Keiji KOYAMA 2
1 Tokyo Metropolitan University, Tokyo, Japan; 2 Toin University of Yokohama, Kanagawa, Japan
BACKGROUND: Ankle braces are often used for stabilization of the ankle joint and reduce the risk of ankle sprains during the athletic performance; however, there is no clear evidence on how prophylactic ankle support affects peak power of the lower-limb performance. The aim of this study was to investigate how prophylactic ankle support affected the peak power of the lower-limb performance.
METHODS: Twenty-one healthy subjects volunteered, and their squat and countermovement vertical jumps with no arm swing were measured. The peak mechanical power of the lower limbs is calculated from the vertical jump height. The peak power of the lower-limb performance was compared among barefoot and two types of ankle brace conditions. A prophylactic ankle support was made from elastically deformable materials.
RESULTS: Peak power of the squat jump was not significantly different between barefoot (3064.9±822.2 W) and ankle support (3020.1±838.6 W) conditions. When compared among barefoot, ankle support and splint conditions in the countermovement jump, peak power was significantly lower in the ankle support (3309.6±889.9 W) and splint (2956.5±860.8 W) conditions as compared with barefoot (3382.6±897.5 W), and it was significantly lower in the ankle splint than in the ankle support condition.
CONCLUSIONS: These results suggest that the ankle support made with elastic materials can provide ankle joint stabilization without a large decrease in the power of the squat jump performance; however, it could impair the power of the stretch-shortening cycle movement.
KEY WORDS: Bioelectric energy sources; Ankle; Lower extremity