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The Impact of Sprint Interval Training Frequency on Blood Glucose Control and Physical Function of Older Adults

Adamson, Simon; Kavaliauskas, Mykolas; Lorimer, Ross; Babraj, John

Authors

Simon Adamson

Mykolas Kavaliauskas

Ross Lorimer

John Babraj



Abstract

Exercise is a powerful tool for improving health in older adults, but the minimum frequency required is not known. This study sought to determine the effect of training frequency of sprint interval training (SIT) on health and physical function in older adults. Thirty-four (13 males and 21 females) older adults (age 65 ± 4 years) were recruited. Participants were allocated to a control group (CON n = 12) or a once- (n = 11) or twice- (n = 11) weekly sprint interval training (SIT) groups. The control group maintained daily activities; the SIT groups performed 8 weeks of once- or twice-weekly training sessions consisting of 6 s sprints. Metabolic health (oral glucose tolerance test), aerobic capacity (walk test) and physical function (get up and go test, sit to stand test) were determined before and after training. Following training, there were significant improvements in blood glucose control, physical function and aerobic capacity in both training groups compared to control, with changes larger than the smallest worthwhile change. There was a small to moderate effect for blood glucose (d = 0.43–0.80) and physical function (d = 0.43–0.69) and a trivial effect for aerobic capacity (d = 0.01) between the two training frequencies. Once a week training SIT is sufficient to produce health benefits. Therefore, the minimum time and frequency of exercise required is much lower than currently recommended.

Journal Article Type Article
Acceptance Date Jan 8, 2020
Online Publication Date Jan 10, 2020
Publication Date Jan 10, 2020
Deposit Date Jan 11, 2020
Publicly Available Date Jan 13, 2020
Journal International Journal of Environmental Research and Public Health
Publisher MDPI
Peer Reviewed Peer Reviewed
Volume 17
Issue 2
Pages 454
DOI https://doi.org/10.3390/ijerph17020454
Keywords ageing; sprint interval training; physical function; blood glucose control
Public URL http://researchrepository.napier.ac.uk/Output/2465725

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