Valenzuela Kevin A, Walters Kellie A, Avila Elizabeth L, Camacho Alexis S, Alvarado Fany, Bennett Hunter J
Movement Science Lab, Department of Kinesiology, California State University, Long Beach, CA 90840, USA.
Neuromechanics Lab, Old Dominion University, Norfolk, VA 23529, USA.
Sports (Basel). 2021 Feb 11;9(2):27. doi: 10.3390/sports9020027.
Barefoot weightlifting has become a popular training modality in recent years due to anecdotal suggestions of improved performance. However, research to support these anecdotal claims is limited. Therefore, the purpose of this study was to assess the differences between the conventional deadlift (CD) and the sumo deadlift (SD) in barefoot and shod conditions. On day one, one-repetition maximums (1 RM) were assessed for thirty subjects in both the CD and SD styles. At least 72 h later, subjects returned to perform five repetitions in four different conditions (barefoot and shod for both CD and SD) at 70% 1 RM. A 2 × 2 (footwear × lifting style) MANOVA was used to assess differences between peak vertical ground reaction force (VGRF), total mechanical work (WORK), barbell vertical displacement (DISP), peak vertical velocity (PV) and lift time (TIME) during the concentric phase. The CD displayed significant increases in VGRF, DISP, WORK, and TIME over the SD. The shod condition displayed increased WORK, DISP, and TIME compared to the barefoot condition. This study suggests that lifting barefoot does not improve performance as no differences in VGRF or PV were evident. The presence of a shoe does appear to increase the DISP and WORK required to complete the lift, suggesting an increased work load is present while wearing shoes.
近年来，由于有传闻称赤脚举重能提高运动表现，赤脚举重已成为一种流行的训练方式。然而，支持这些传闻的研究有限。因此，本研究的目的是评估在赤脚和穿鞋条件下传统硬拉（CD）和相扑硬拉（SD）之间的差异。第一天，对30名受试者的CD和SD两种方式进行了一次重复最大值（1RM）评估。至少72小时后，受试者返回，在四种不同条件下（CD和SD均分为赤脚和穿鞋）以1RM的70%进行五次重复动作。使用2×2（鞋类×举重方式）多变量方差分析来评估在向心阶段峰值垂直地面反作用力（VGRF）、总机械功（WORK）、杠铃垂直位移（DISP）、峰值垂直速度（PV）和举起时间（TIME）之间的差异。与SD相比，CD在VGRF、DISP、WORK和TIME方面有显著增加。与赤脚条件相比，穿鞋条件下的WORK、DISP和TIME有所增加。本研究表明，赤脚举重并不能提高运动表现，因为在VGRF或PV方面没有明显差异。鞋子的存在似乎确实会增加完成举重所需的DISP和WORK，这表明穿鞋时存在更大的工作量。
