Bellar David, Etheredge Cory, Judge Lawrence W
School of Kinesiology, University of Louisiana at Lafayette, Lafayette LA USA 70503.
School of Kinesiology, Ball State University, Muncie IN USA 47306.
J Hum Kinet. 2018 Oct 15;64:77-85. doi: 10.1515/hukin-2017-0202. eCollection 2018 Sep.
Suspension exercise systems are being used in strength and conditioning facilities, fitness centers, rehabilitation centers and home gyms. Though some evidence exists regarding the impact of training with these systems, more work is needed for a better understanding. The purpose of the present investigation was to examine the acute effects of an exercise session with 2 (hands only) and 4 straps (hands and feet) in the push-up exercise compared to a work-matched bench press exercise session. The participants for this repeated measures, cross-over investigation were 18 healthy college-aged males (age: 24.8 ± 3.5 yrs, body mass: 81.8 ± 7.8 kg, body height: 178.9 ± 4.5 cm). The conditions were 6 sets of 10 repetitions of suspension push-ups using two straps (DUAL) for the hands, fours straps (QUAD) for hands and feet and a traditional bench press exercise matched to the average resistance during the suspension push-up. The participants performed all repetitions at a controlled cadence. Expired gases, and heart rate were monitored continuously during the exercise session. Pre and post exercise saliva samples were collected to quantify changes in testosterone and cortisol. Upper body isometric strength tests ( UBIST) were performed (Post, 1 hr, 24 hr, 48 hr) to evaluate changes in force production during recovery. Data analysis via repeated measures ANOVA revealed a significant trend for increased oxygen consumption in the QUAD condition compared to the bench press (p = 0.019). Additionally, both suspension conditions resulted in a reduced respiratory exchange ratio as compared to the bench press (p < 0.05). A significant main effect was noted for time in all conditions regarding isometric strength (p < 0.001), but no differences between conditions were revealed. Testosterone and cortisol responses did not differ between conditions. Based upon these data, it appears that when matched for work, suspension exercise results in equivalent reductions in muscle force, but greater oxygen consumption compared to isotonic exercise.
悬吊训练系统正在被应用于力量与体能训练设施、健身中心、康复中心以及家庭健身房。尽管有一些关于使用这些系统进行训练的影响的证据，但仍需要更多研究以加深理解。本研究的目的是，与工作量匹配的卧推训练相比，考察在俯卧撑训练中使用2条（仅手部）和4条弹力带（手部和脚部）进行一次训练的急性效应。本重复测量、交叉研究的参与者为18名健康的大学适龄男性（年龄：24.8±3.5岁，体重：81.8±7.8千克，身高：178.9±4.5厘米）。训练条件为：使用2条弹力带（双手）进行6组，每组10次的悬吊俯卧撑（DUAL）；使用4条弹力带（双手和双脚）进行6组，每组10次的悬吊俯卧撑（QUAD）；以及一次与悬吊俯卧撑平均阻力相匹配的传统卧推训练。参与者以受控的节奏完成所有重复动作。在训练期间持续监测呼出气体和心率。在训练前后采集唾液样本，以量化睾酮和皮质醇的变化。进行上身等长力量测试（UBIST）（训练后、1小时、24小时、48小时），以评估恢复期间力量产生的变化。通过重复测量方差分析进行数据分析，结果显示与卧推相比，QUAD条件下的耗氧量有显著增加趋势（p = 0.019）。此外，与卧推相比，两种悬吊训练条件下的呼吸交换率均降低（p < 0.05）。在所有条件下，等长力量在时间方面存在显著的主效应（p < 0.001），但各条件之间未显示出差异。各条件下睾酮和皮质醇的反应没有差异。基于这些数据，似乎当工作量相匹配时，悬吊训练与等张训练相比，会导致肌肉力量同等程度的下降，但耗氧量更大。
