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Multiple short bouts of exercise are better than a single continuous bout for cardiometabolic health: a randomised crossover trial.

Abstract：

PURPOSE:To compare cardiometabolic responses to five consecutive days of daily postprandial exercise accumulated in three 10-min bouts or a single 30-min bout to a no-exercise control. METHODS:Ten insufficiently active adults completed three trials in a randomised order. Each trial comprised five consecutive days of 30 min of exercise either accumulated in three separate 10-min bouts (ACC) after main meals; a single 30-min bout after dinner (CONT); or a no-exercise control (NOEX). Glucose regulation was assessed from an oral glucose tolerance test. Applanation tonometry was used to assess pulse wave velocity approximately 12 h following completion of the final trial. RESULTS:Area under the 2-h glucose curve was similar for CONT (mean; 95% CI 917 mmol L-1 2 h-1; 815 to 1019) and ACC (931 mmol L-1 2 h-1; 794 to 1068, p = 0.671). Area under the 2-h insulin curve was greater following NOEX (70,328 pmol L-1 2 h-1; 30,962 to 109,693) than ACC (51,313 pmol L-1 2 h-1: 21,822 to 80,806, p = 0.007). Pulse wave velocity was lower for ACC (5.96 m s-1: 5.38 to 6.53) compared to CONT (6.93 m s-1: 5.92 to 7.94, p = 0.031) but not significantly lower for ACC compared to NOEX (6.52 m s-1: 5.70 to 7.34, p = 0.151). CONCLUSION:Accumulating 30 min of moderate-intensity walking in three bouts throughout the day is more effective at reducing markers of cardiometabolic health risk in insufficiently active, apparently healthy adults than a single daily bout. Both accumulated and single-bout walking were equally as effective at reducing postprandial glucose concentrations compared to a no-exercise control. Therefore, accumulating exercise in short bouts after each main meal might be more advantageous for overall cardiometabolic health.

journal_name

Eur J Appl Physiol

journal_title

European journal of applied physiology

authors

Shambrook P,Kingsley MI,Taylor NF,Wundersitz DW,Wundersitz CE,Gordon BA

doi

10.1007/s00421-020-04461-y

subject

Has Abstract

pub_date

2020-11-01 00:00:00

pages

2361-2369

issue

eissn

1439-6319

issn

1439-6327

pii

10.1007/s00421-020-04461-y

journal_volume

120

pub_type

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Multiple short bouts of exercise are better than a single continuous bout for cardiometabolic health: a randomised crossover trial.