Effects of different test programs on the maximal fat oxidation in young females

doi:10.3969/j.issn.2095-4344.0393

Abstract

Abstract:

BACKGROUND: The exercise intensity corresponding to the maximal amount of fat oxidation per unit time contributes to losing weight. In recent years, the maximum fat oxidation intensity of the subjects is determined by the incremental load program. However, the anaerobic threshold is the turning point of aerobic metabolism to anaerobic metabolism, which has been shown to be related to the maximum fat oxidation. Whether individualized anaerobic threshold level can accurately detect the maximum fat oxidation is unknown.
OBJECTIVE: To study the maximal fat oxidation under increasing load scheme and constant load scheme, and to explore the changes of maximal fat oxidation under the two schemes.
METHODS: Sixty-six young females underwent treadmill exercise with increasing and constant load schemes, respectively. Gas metabolism indexes during exercise were collected to calculate the fat oxidation and the maximal fat oxidation under the two regimens.
RESULTS AND CONCLUSION: The constant load scheme showed a slightly, but not significantly, higher maximum fat oxidation intensity compared with increasing load scheme (P > 0.05). Under increasing load, the maximal fat oxidation intensity was (54.60±9.02)%VO2max and (66.93±6.63)%HRmax, and under constant load, it was (56.71±6.65)%VO2max and (66.53±8.27)%HRmax. Moreover, under constant load, the respiratory exchange ratio and movement velocity corresponding to the maximum fat oxidative intensity were high (P < 0.01), the test time was short and the ratio of energy supplied by fats was low (P < 0.01). Considering the intensity of exercise and time consumption, it is recommended to detect the maximal fat oxidation intensity based on the individual anaerobic threshold level under constant load, especially the older adults who are weak, obese or cannot exercise for a long time.

中国组织工程研究杂志出版内容重点：组织构建；骨细胞；软骨细胞；细胞培养；成纤维细胞；血管内皮细胞；骨质疏松；组织工程

Key words: Tissue Engineering, Anaerobic Threshold, Fats

CLC Number:

R318

Li Ying-ying, Peng Li, Bi Chen-chao. Effects of different test programs on the maximal fat oxidation in young females [J]. Chinese Journal of Tissue Engineering Research, 2018, 22(32): 5145-5149.

Figures/Tables 2

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