| Autor: |
Hron AJ; Sanford Health, Fargo, ND, USA.; School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND, USA., Bond CW; Sanford Health, Fargo, ND, USA., Noonan BC; Sanford Health, Fargo, ND, USA. |
| Jazyk: |
angličtina |
| Zdroj: |
International journal of exercise science [Int J Exerc Sci] 2020 Feb 01; Vol. 13 (1), pp. 234-248. Date of Electronic Publication: 2020 Feb 01 (Print Publication: 2020). |
| Abstrakt: |
External load may increase an individual's risk of non-contact anterior cruciate ligament (ACL) injury during single-legged jump-landing (SLJL). This study evaluated the effects of jump direction and external load on hip and knee joint motion and time to stabilization (TTS) during SLJL. Seventeen active males (n = 8) and females (22.2 ± 3.0 y, 1.75 ± 0.08 m, 73.4 ± 12.0 kg) participated in this randomized, crossover designed study. Single-legged jump-landings performed in two conditions, including without external load (BW) and with a torso-worn weight vest equal to 10% of the participant's body weight (BW+10%), from backward, forward, medial, and lateral SLJL directions. Two-way repeated measures ANOVA did not identify any significant interactions (P > .01, η 2 : < .001 - .037), but some main effects for condition with small effect sizes were identified (P < .01, η 2 : .009 - .039). Several main effects for SLJL direction were identified with larger effect sizes (P < .01, η 2 : .010 - .574). This suggests SLJL direction may challenge different components of SLJL biomechanics, and that recreationally active, college-aged individuals may possess effective compensatory mechanisms that can mitigate the effect of BW+10%. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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