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2019/2020

High-intensity interval exercise lowers postprandial glucose concentrations more in obese adults than lean adults*

Primary Care Diabetes*, 2019, 13(6): 568-573

Author(s)Zhaowei Kong,
Qingde Shi,
Shengyan Sun,
Tomas K. Tong,
Haifeng Zhang,
Jinlei Nie
Summary

Aims
To compare postprandial glucose responses to high-intensity interval exercise (HIE) between obese and lean individuals.

Methods
Thirty healthy young adult males (15 obese, 15 lean) ate a standardised meal, then performed HIE (4 × 30-s Wingate cycling/4-min rest) or a no-exercise control trial (CON). Blood glucose was measured preprandially and up to 150 min postprandially.

Results
Compared to CON, HIE reduced postprandial glucose concentrations at 120–150 min in obese (p < 0.001) and lean men (p < 0.05), with greater reductions in obese than lean subjects at 120 (−27.0% vs. −8.3%), 135 (−31.9% vs. −15.7%), and 150 min (−21.8% vs. −10.6%). The total glucose area under the curve (AUC) for the testing period was lower with HIE than CON among obese men (p < 0.05), but not lean men (p > 0.05). We found moderate correlations between body mass and postprandial glucose changes (r = 0.39–0.44, p < 0.05), and between glucose AUC and body mass and fat free mass (r = 0.39–0.48, p < 0.05).

Conclusions
Our findings suggest that HIE may act as a time-efficient lifestyle intervention strategy for improving obesity-related diabetes risk factors, and might play a role in primary diabetes prevention for the healthy but sedentary population.


* Also listed in SCIE.

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