Determination of the exercise intensity that elicits maximal fat oxidation in short-time testing
Determination of the exercise intensity that elicits maximal fat oxidation in short-time testing
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DOI：
10.1080/02640414.2013.815360
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发表时间：
2014-01-20
影响因子：
3.4
通讯作者：
Katsumura, Toshihito
中科院分区：
文献类型：
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作者：
Takagi, Shun;Sakamoto, Shizuo;Katsumura, Toshihito
最大脂肪氧化（MFO）率和引起MFO的运动强度（FATmax-强度）旨在评估脂肪代谢能力，并为个人在长时间运动期间提供目标运动强度。然而，以前确定 FATmax 强度的方法非常耗时。本研究的目的是检验短时测试确定的 FATmax 强度的有效性。九名健康的年轻男性在短时间测试中进行斜坡运动，直至精疲力尽，并进行 5 次每次 60 分钟的恒定负荷运动，运动强度由斜坡方案确定 (FATmax-intensity((R)))、FATmax-intensity((R))+/- 5% 峰值摄氧量 (VO(2)peak) 和 FATmax-intensity((R))+/- 10%VO(2)peak。在 5 项试验中确定了早期运动（10 分钟）和长时间运动（60 分钟）的 FATmax 强度，以评估 FATmax 强度的有效性((R))。开始恒定负荷运动 10 分钟后，FATmax-intensity((R)) 显示出 5 项试验中最高的脂肪氧化，尽管 Ramp 方案的 MFO 被高估了。因此，在常规斜坡测试中测量 FATmax 强度可能有助于评估脂肪代谢。然而，由于FATmax-intensity((R))在开始恒定负荷运动后的5次每次60分钟的试验中并未引起最高的脂肪氧化，因此FATmax-intensity((R))对于长时间的运动训练可能并不有效。
Maximal fat oxidation (MFO) rate and the exercise intensity that elicits MFO (FATmax-intensity) were designed to evaluate fat metabolism capacity and to provide individuals with a target exercise intensity during prolonged exercise. However, the previous methods of determining FATmax-intensity were time-consuming. The purpose of this study was to examine the validity of FATmax-intensity determined by short-time testing. Nine healthy young men performed ramp exercise, in a short-time test, until exhaustion and 5 constant-load exercises of 60min each at individual FATmax-intensity determined by ramp protocol (FATmax-intensity((R))), FATmax-intensity((R))+/- 5% of peak oxygen uptake (VO(2)peak) and FATmax-intensity((R))+/- 10%VO(2)peak. FATmax-intensity was determined among 5 trials at points of early exercise (10min) and prolonged exercise (60min) to evaluate the validity of FATmax-intensity((R)). Ten minutes after starting constant-load exercise, FATmax-intensity((R)) showed the highest fat oxidation among 5 trials, even though MFO by ramp protocol was overestimated. Therefore, it may be useful for evaluation of fat metabolism to include the measurement of the FATmax-intensity in a routine ramp test. However, because FATmax-intensity((R)) did not elicit the highest fat oxidation among 5 trials of 60min each after starting constant-load exercise, FATmax-intensity((R)) may not be effective for prolonged exercise training.