Continuous walking and time- and intensity-matched interval walking: Cardiometabolic demand and post-exercise enjoyment in insufficiently active, healthy adults

We compared cardiometabolic demand and post-exercise enjoyment between continuous walking (CW) and time- and intensity-matched interval walking (IW) in insufficiently active adults. Sixteen individuals (13 females and three males, age 25.3 ± 11.1 years) completed one CW and one IW session lasting 30...

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Bibliographic Details
Published in:Journal of sports sciences 2021, Vol.39 (1), p.23-30
Main Authors: Francis, Kate, Williamson, Tom, Kelly, Paul, Phillips, Shaun M.
Format: Article
Language:English
Subjects:
Adult
affective responses
Breath Tests
Energy expenditure
Energy Metabolism - physiology
Exercise
Female
health
Heart rate
Heart Rate - physiology
Humans
Male
Oxygen Consumption - physiology
physical activity
Physical training
Pleasure - physiology
Random Allocation
Time Factors
Walking
Walking - physiology
Walking - psychology
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Summary:We compared cardiometabolic demand and post-exercise enjoyment between continuous walking (CW) and time- and intensity-matched interval walking (IW) in insufficiently active adults. Sixteen individuals (13 females and three males, age 25.3 ± 11.1 years) completed one CW and one IW session lasting 30 min in a randomised-counterbalanced design. For CW, participants walked at a mean intensity of 65-70% predicted maximum heart rate (HR max ). For IW, participants alternated between 3 min at 80% HR max and 2 min at 50% HR max . Expired gas was measured throughout each protocol. Participants rated post-exercise enjoyment following each protocol. Mean HR and V˙O 2 showed small positive differences in IW vs. CW (2, 95%CL 0, 4 beat.min −1 ; d = 0.23, 95%CL 0.06, 0.41 and 1.4, 95%CL 1.2 ml.kg −1 .min −1 , d = 0.36, 95%CL 0.05, 0.65, respectively). There was a medium positive difference in overall kcal expenditure in IW vs. CW (25, 95%CL 7 kcal, d = 0.58, 95%CL 0.33, 0.82). Post-exercise enjoyment was moderately greater following IW vs. CW (9.1, 95%CL 1.4, 16.8 AU, d = 0.62, 95%CL 0.06, 0.90), with 75% of participants reporting IW as more enjoyable. Interval walking elicits meaningfully greater energy expenditure and is more enjoyable than CW in insufficiently active, healthy adults.
ISSN:0264-0414
1466-447X
DOI:10.1080/02640414.2020.1803717