Shepherd Brandon D, Price Ffion G, Krings Benjamin M, Smith Johneric W
Department of Kinesiology, Mississippi State University, Mississippi State, MS, USA.
Department of Exercise Science, University of Wisconsin-Platteville, Platteville, WI, USA.
Int J Exerc Sci. 2022 Mar 1;15(4):414-422. doi: 10.70252/NHAY2400. eCollection 2022.
Traditional graded exercise testing to assess maximal oxygen uptake (VO) may not well represent resistance-trained athletes due to their unfamiliarity with continuous exercise. For this reason, it is possible discontinuous exercise protocols may better represent the maximum capacity for aerobic metabolism in resistance-trained athletes, in order to provide a more valid assessment of VO and risk of developing cardiovascular disease.
The purpose of this experiment was to compare VO during a continuous and discontinuous modified Bruce protocol in both highly resistance-trained and endurance-trained males.
19 college-aged males (age: 20.6 ± 1.9 yr, height: 176.5 ± 7.6 cm, weight: 85.0 ± 25.6 kg) of intermediate resistance- or endurance-trained status were recruited for this study. Participants completed a continuous and discontinuous modified Bruce protocol on two visits separated by seven days.
A 2×2 one-way ANOVA revealed a significant group main effect for VO ( = 0.004) in which endurance athletes achieved significantly higher VO values compared to resistance-trained athletes. A significant group main effect for RPE was found ( = 0.045) in which endurance-trained reported significantly higher RPE values than the resistance-trained. A significant main effect for protocol for heart rate ( = 0.033) was found in which individuals achieved higher heart rates during the continuous protocol compared to the discontinuous.
Although a discontinuous protocol with rest periods between stages is comparable to the exercise mode familiar to resistance-trained athletes, it did not provide any additional benefit to VO values.
传统的分级运动测试用于评估最大摄氧量（VO），但由于抗阻训练运动员对持续运动不熟悉，可能无法很好地反映他们的情况。因此，间断运动方案可能能更好地反映抗阻训练运动员的有氧代谢最大能力，以便更有效地评估VO和心血管疾病发生风险。
本实验的目的是比较在连续和间断改良布鲁斯方案中，高抗阻训练和耐力训练男性的VO。
招募19名处于中等抗阻训练或耐力训练水平的大学年龄男性（年龄：20.6±1.9岁，身高：176.5±7.6厘米，体重：85.0±25.6千克）参与本研究。参与者在相隔七天的两次访视中完成连续和间断改良布鲁斯方案。
一项2×2单因素方差分析显示，VO存在显著的组间主效应（=0.004），其中耐力运动员的VO值显著高于抗阻训练运动员。发现RPE存在显著的组间主效应（=0.045），其中耐力训练者报告的RPE值显著高于抗阻训练者。发现心率方案存在显著的主效应（=0.033），其中个体在连续方案中的心率高于间断方案。
尽管在各阶段之间有休息期的间断方案与抗阻训练运动员熟悉的运动模式相当，但它并未给VO值带来任何额外益处。
