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The effect of advice to walk 2000 extra steps daily on food intake
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Koulouri, A.-A., Tigbe, William W. and Lean, M. E. J. (2006) The effect of advice to walk 2000 extra steps daily on food intake. Journal of Human Nutrition and Dietetics, 19 (4). pp. 263-266. doi:10.1111/j.1365-277X.2006.00703.x ISSN 0952-3871.
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Official URL: http://dx.doi.org/10.1111/j.1365-277X.2006.00703.x
Abstract
Background:
It is currently unclear how physical activity and diet interact within the ranges of activity seen in the general population. This study aimed to establish whether a small, acute, increase in physical activity would lead to compensatory change in energy intake and nutrient balance, and to provide power analysis data for future research in this field.
Method:
Twelve participants were studied over 7 days of habitual activity and 2 weeks after instruction to increase physical activity by 2000 steps per day. Physical activity was assessed using a diary, the 'activPAL' activity monitor and a pedometer. Dietary analyses from prospective food diaries were compared between the first and third weeks.
Results:
Participants increased step-counts (+2600 steps per day, P = 0.008) and estimated energy expenditure (+300-1000 kJ day(-1), P = 0.002) but did not significantly change their energy intake, dietary composition or number of meals per day. From reverse power analysis 38 participants would be needed to exclude a change in energy intake of 400 kJ day(-1) with 90% power at P < 0.05; 400 kJ day(-1) would compensate for a 2000 steps per day increase in physical activity.
Conclusion:
These results did not demonstrate any compensatory increase in food consumption when physical activity was increased by walking an average of 2600 additional steps per day. Power analysis indicates that a larger study (n = 38) will be necessary to exclude such an effect with confidence.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Subjects: | Q Science > Q Science (General) | ||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School > Health Sciences Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School > Health Sciences > Statistics and Epidemiology Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School |
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| Journal or Publication Title: | Journal of Human Nutrition and Dietetics | ||||||
| Publisher: | Wiley-Blackwell Publishing Ltd. | ||||||
| ISSN: | 0952-3871 | ||||||
| Official Date: | 10 August 2006 | ||||||
| Dates: |
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| Volume: | 19 | ||||||
| Number: | 4 | ||||||
| Page Range: | pp. 263-266 | ||||||
| DOI: | 10.1111/j.1365-277X.2006.00703.x | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Restricted or Subscription Access |
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