期刊
MEDICINE & SCIENCE IN SPORTS & EXERCISE
卷 53, 期 1, 页码 150-158出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1249/MSS.0000000000002431
关键词
STAIR CLIMBING; BRIEF INTENSE EXERCISE; POSTPRANDIAL METABOLISM; INSULIN RESISTANCE; INTERVAL TRAINING; INTERMITTENT EXERCISE
资金
- Mitacs Accelerate Fellowship [IT09918]
- Natural Sciences and Engineering Research Council [435807]
- Canadian Institutes of Health Research New Investigator Salary Award [MSH-141980]
- Michael Smith Foundation for Health Research Scholar Award [16890]
This study found that breaking up prolonged sitting with brief stair climbing exercise snacks did not show significant differences in healthy-weight men, but significantly lowered postprandial insulin and NEFA levels in adults with overweight/obesity.
Purpose: Prolonged sitting is associated with cardiometabolic complications. The study purpose was to investigate whether breaking up prolonged sitting with brief stair climbing exercise snacks could lower postprandial insulin, glucose, and free fatty acids responses. Methods: In two separate randomized crossover studies, 12 young healthy-weight men (study 1) and 11 adults with overweight/obesity (OW; study 2) completed two experimental conditions: i) sedentary (SED; 9-h sitting) and ii) stair climbing snacks (SS; 8 x 15-30 s once per hour). The same high-glycemic index meals were consumed at 0, 3, and 6 h at each condition. The primary outcome was total insulin area under the curve (AUC) across 9 h. Results: In healthy-weight men, there were no significant differences between SS and SED for total (9-h) insulin AUC (P = 0.24, d = 0.4), total glucose AUC (P = 0.17, d = 0.48), total nonesterified fatty acid (NEFA) AUC (P = 0.22, d = 0.4), or total triglyceride AUC (P = 0.72). In adults with OW, total insulin AUC (-16.5%, P = 0.036, d = 0.94) and total NEFA AUC (-21%, P = 0.016, d = 1.2) were significantly lower in SS versus SED. No differences were found for total glucose and triglyceride AUC (all, P > 0.31) in participants with OW. Conclusions: Breaking up 9 h of prolonged sitting with hourly brief stair climbing exercise snacks lowered postprandial insulin and NEFA levels in adults with overweight/obesity.
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