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- Title
Effects of Two Football Stud Types on Knee and Ankle Kinetics of Single-Leg Land-Cut and 180° Cut Movements on Infilled Synthetic Turf.
- Authors
Bennett, Hunter J.; Brock, Elizabeth; Brosnan, James T.; Sorochan, John C.; Songning Zhang
- Abstract
Higher ACL injury rates have been recorded in cleats with higher torsional resistance in American football, which warrants better understanding of shoe/stud-dependent joint kinetics. The purpose of this study was to determine differences in knee and ankle kinetics during single-leg land cuts and 180° cuts on synthetic infilled turf while wearing 3 types of shoes. Fourteen recreational football players performed single-leg land cuts and 180° cuts in nonstudded running shoes (RS) and in football shoes with natural (NTS) and synthetic turf studs (STS). Knee and ankle kinetic variables were analyzed with a 3 x 2 (shoe x movement) repeated-measures ANOVA (P < .05). A significant shoe-by-movement interaction was found in loading response peak knee adduction moments, with NTS producing smaller moments compared with both STS and RS only in 180° cuts. Reduced peak negative plantar flexor powers were also found in NTS compared with STS. The single-leg land cut produced greater loading response and push-off peak knee extensor moments, as well as peak negative and positive extensor and plantar flexor powers, but smaller loading peak knee adduction moments and push-off peak ankle eversion moments than 180° cuts. Overall, the STS and 180° cuts resulted in greater frontal plane knee loading and should be monitored for possible increased ACL injury risks.
- Subjects
ANALYSIS of variance; ANKLE; ANTERIOR cruciate ligament injuries; ATHLETIC shoes; BODY weight; STATISTICAL correlation; DYNAMICS; ECOLOGY; FOOTBALL; KNEE; QUESTIONNAIRES; RUNNING; STATISTICS; STATURE; DATA analysis; BODY movement; REPEATED measures design; DATA analysis software; DESCRIPTIVE statistics
- Publication
Journal of Applied Biomechanics, 2015, Vol 31, Issue 5, p309
- ISSN
1065-8483
- Publication type
Article
- DOI
10.1123/jab.2014-0203