PDF(Pubmed)
Abstract：
Squatting, a traditional resistance exercise classified as strength training, relies on anaerobic pathways, but its aerobic aspects remain unclear. We examined heart rate and oxygen demand during squats, exploring variations across different strength statuses. It fills gaps in understanding the cardiorespiratory effects of squatting, especially during multiple sets. Twenty-two young healthy resistance trained men (age: 28 ± 4 years) participated. Maximal oxygen consumption (V̇O2max) and 1 repetition maximum (RM) of squat were measured. Participants performed 5 sets of squat exercises at 65% of 1RM for 10 repetitions with 3-min rest intervals. Heart rate and pulmonary gas exchange were measured during the squat exercise. Participants were divided into high strength (HS; upper 50%) and low strength (LS; lower 50%) groups based on a median split of their 1 RM squat values (normalized to their body weight). During 5 sets of squat exercise, oxygen consumption (V̇O2) increased up to 47.8 ± 8.9 ml/kg/min, corresponding to 100.6% of predetermined V̇O2max. The HS group achieved a greater highest point of V̇O2 in relation to V̇O2max than the LS group (108.0 vs. 93.7%). During the exercise intervals, V̇O2 exceeded V̇CO2, while during the rest intervals, V̇CO2 surpassed V̇O2. Our findings suggest that the oxygen demand during squatting is notably substantial, which may vary according to the training status.
摘要：
蹲着,被归类为力量训练的传统阻力运动，依赖于厌氧途径，但其有氧方面仍不清楚。我们检查了下蹲时的心率和需氧量，探索不同强度状态的变化。它填补了理解蹲下对心肺影响的空白，尤其是在多套期间。参加了22名年轻的健康抵抗训练的男性（年龄：28±4岁）。测量了下蹲的最大耗氧量（V2max）和1次重复最大值（RM）。参与者以1RM的65％进行了5组深蹲运动，重复10次，休息间隔3分钟。在深蹲运动期间测量心率和肺气体交换。参与者根据其1RM深蹲值的中位数（归一化为体重）分为高强度（HS；高50％）和低强度（LS；低50％）组。在5组深蹲运动中，耗氧量（V²O2）增加到47.8±8.9ml/kg/min，对应于100.6%的预定V^O2max。与LS组相比，HS组获得了更大的V²O2相对于V²O2max的最高点（108.0vs.93.7%）。在锻炼间隔期间，在休息间隔期间，V?O2超过V?CO2，二氧化碳超过了二氧化碳。我们的研究结果表明，下蹲期间的需氧量非常大，这可能会根据培训状态而有所不同。
