Research
Energy balance
Spontaneous physical activity (SPA) varied widely from 4.4 to 17.5% and was higher in males (9.3 +/- 2.0%) than in females (8.6 +/- 2.3%; P less than 0.05).
Understanding gender differences in SPA can help tailor physical activity recommendations.
StrongSupportsmedium confidence
SPA, defined as the percentage of time the subjects were active, varied widely from 4.4 to 17.5%. It was higher in males (9.3 +/- 2.0%) than in females (8.6 +/- 2.3%; P less than 0.05).
Why this rating
Based on the study design involving a respiratory chamber measurement.
Source
Spontaneous physical activity and obesity: cross-sectional and longitudinal studies in Pima Indians
F. Zurlo et al. · American Journal of Physiology-Endocrinology and Metabolism · 1992
DOI 10.1152/ajpendo.1992.263.2.e296
cross_sectional · n=180Cited 166×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- SPA accounted for a significant portion of the daily energy expenditure (24-h EE) in both males (1,389 +/- 423 kJ/day) and females (1,163 +/- 351 kJ/day).Strong
- In males only, SPA correlated inversely to the rate of subsequent body weight change (r = -0.25, P less than 0.05) and the rate of fat-mass change (r = -0.35, P less than 0.005).Strong
- Low levels of spontaneous physical activity (SPA) are associated with a higher rate of subsequent body weight and fat mass gain in Pima Indian males.Good
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