Fukubayashi Toru

Hoshiba Takuma

English

Hoshiba, Takuma

Fukubayashi, Toru

Waseda University Repository

スポーツ科学研究, 11, 69-130, 2014 年  84  Landing mechanics in subjects with anterior cruciate ligament reconstruction  during single- and double-leg drop jumps  Takuma Hoshiba1, Toru Fukubayashi2 1 Graduate School of Sport Sciences, Waseda University 2 Fuculty of Sport Sciences, Waseda University  The purpose of this study was to examine landing patterns during single- and double -leg drop jumps and to observe landing characteristics of subjects following anterior cruciate ligament (ACL) reconstruction.  Eight subjects (5 men and 3 women) with ACL reconstruction performed two jump tasks: single- and double-leg drop jumps. In drop jumps, they were instructed to drop off the box and land stable on the ground. An eight-camera motion analysis system and two force plates were used to record the landing mechanics during the jump tasks.  The following variables were extracted from the time-series data (0, 50, 100, 150ms after landing), the values of hip flexion angle, hip abd/adduction angle, knee ext/flexion angle, knee abd/adduction angle. Each parameter between single- and double-leg trials were compared in terms of reconstructed and contralateral limb using paired t test (statistical significance set at p < 0.05). Landing mechanics in the reconstructed and contralateral limbs between single- and double-leg drop jumps were significantly different for sagittal plane movements (p < 0.05). Although no difference was observed for hip abd/adduction and knee abd/adduction angles in the reconstructed limb, hip abd/adduction angle in the contralateral limb was statistically different (p < 0.05).  Our results show that we should not only focus on the reconstructed limb; the relation to the contralateral limb also needs to be taken into account at the same time in terms of landing mechanics.         

Landing mechanics in subjects with anterior cruciate ligament reconstruction　during single- and double-leg drop jumps

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Landing mechanics in subjects with anterior cruciate ligament reconstruction　during single- and double-leg drop jumps

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