Chien Kuei-Yu, Kan Nai-Wen, Liao Yi-Hung, Lin Yea-Lih, Lin Chin-Li, Chen Wan-Chin
1Graduate Institute of Sports Science, National Taiwan Sport University, Taoyuan, Taiwan; 2Center for General Education, Taipei Medical University, Taipei, Taiwan; 3Department of Exercise and Health Science, National Taipei University of Nursing and Health Sciences, Taipei, Taiwan; 4Department of Athletic Training and Health, National Taiwan Sport University, Taoyuan, Taiwan; and 5Graduate Institute of Sports Equipment Technology, University of Taipei, Taipei, Taiwan.
J Strength Cond Res. 2017 Mar;31(3):750-757. doi: 10.1519/JSC.0000000000001524.
Chien, K-Y, Kan, N-W, Liao, Y-H, Lin, Y-L, Lin, C-L, and Chen, W-C. Neuromuscular activity and muscular oxygenation through different movement cadences during in-water and on-land knee extension exercise. J Strength Cond Res 31(3): 750-757, 2017-The purpose of this study was to determine the influence of various knee extension exercise cadences on neuromuscular activation and hemodynamic properties of the quadriceps muscle in water and on land. Seventeen young women participated in this study, and the subjects were randomly allocated to perform loaded knee extension exercises in water and on land at 4 different cadences of 30, 50, 70, and 90 b·min. Heart rate (HR), blood flow (BF), total saturation index (TSI) of oxygen, electromyography (EMG) for the extent of muscular activity, and rate of perceived exertion (RPE) were measured. Response values of HR, BF, TSI, and RPE at each cadence were obtained by subtracting the resting values from the indicator values measured at the respective cadences. We observed that BF, EMG, and RPE in water at 90 b·min were comparable with those on land. The HR and TSI changes were higher in water compared with on land (p = 0.004 and p = 0.013, respectively). In conclusion, we demonstrate that the neuromuscular activity when performing knee extension exercises at 90 b·min in water was comparable with that on land. However, exercising in water at the same cadence evoked higher TSI responses and greater cardiovascular challenges. A knee extension exercise at 90 b·min is the recommended operating speed of rehabilitation in water.
简，K - Y，甘，N - W，廖，Y - H，林，Y - L，林，C - L，以及陈，W - C。水中和陆上膝关节伸展运动中不同运动节奏下的神经肌肉活动和肌肉氧合。《力量与体能研究杂志》31(3): 750 - 757，2017年 - 本研究的目的是确定各种膝关节伸展运动节奏对水中和陆上股四头肌神经肌肉激活和血液动力学特性的影响。17名年轻女性参与了本研究，受试者被随机分配在水中和陆上以30、50、70和90次/分钟这4种不同节奏进行负重膝关节伸展运动。测量了心率（HR）、血流量（BF）、氧的总饱和度指数（TSI）、肌肉活动程度的肌电图（EMG）以及主观用力感觉等级（RPE）。通过从各节奏下测量的指标值中减去静息值，得到每个节奏下HR、BF、TSI和RPE的反应值。我们观察到，90次/分钟节奏下水中的BF、EMG和RPE与陆上相当。与陆上相比，水中的HR和TSI变化更高（分别为p = 0.004和p = 0.013）。总之，我们证明在水中以90次/分钟进行膝关节伸展运动时的神经肌肉活动与陆上相当。然而，在相同节奏下在水中运动引发了更高的TSI反应和更大的心血管挑战。90次/分钟的膝关节伸展运动是水中康复推荐的操作速度。
