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Effects of different periods of hypoxic training on glucose metabolism and insulin sensitivity.

Abstract：

:This study examined the effects of different periods of hypoxic training on glucose metabolism. Sedentary subjects underwent hypoxic training (FiO2 = 15.0%) for either 2 weeks (2-week group; n = 11) or 4 weeks (4-week group; n = 10). The 2-week group conducted training sessions on 6 days week(-1) for 2 weeks, whereas the 4-week group conducted training sessions on 3 days week(-1) for 4 weeks. Body fat mass or abdominal fat area did not change after training period in either group. VO2max increased in both groups after training period (42 ± 2 versus 43 ± 2 ml min(-1) kg(-1) in 2-week group, 41 ± 1 versus 42 ± 2 ml min(-1) kg(-1) in 4-week group). Both groups showed a reduction in mean blood pressure after training period (92 ± 3 versus 90 ± 3 mmHg in 2-week group, 91 ± 2 versus 87 ± 2 mmHg in 4-week group, P ≤ 0.05). No change was observed in blood glucose response after glucose ingestion after training period. However, area under the curve for serum insulin concentrations after glucose ingestion significantly decreased in only 4-week group (6910 ± 763 versus 5812 ± 872 μIU ml(-1) 120 min, P ≤ 0.05). In conclusion, hypoxic training reduced blood pressure with independent on training duration. However, a longer period of hypoxic training led to greater improvements in insulin sensitivity compared with equivalent training over a shorter period, suggesting that hypoxic training programmes for more than 4 weeks might be more beneficial for improving insulin sensitivity.

journal_name

Clin Physiol Funct Imaging

journal_title

Clinical physiology and functional imaging

authors

Morishima T,Hasegawa Y,Sasaki H,Kurihara T,Hamaoka T,Goto K

doi

10.1111/cpf.12133

subject

Has Abstract

pub_date

2015-03-01 00:00:00

pages

104-9

issue

2

eissn

1475-0961

issn

1475-097X

journal_volume

35

pub_type

杂志文章,随机对照试验

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