The influence of removing the 10-minute bout requirement on the demographic, behaviour and health profiles of Canadian adults who meet the physical activity recommendations.
Level 4 - case-series / case-control
Cross-sectional analysis of national health survey and accelerometer data.
PubMed 35984950 · doi:10.25318/82-003-x202200800001-eng
What was done
Researchers analyzed accelerometer data from 7,102 adults aged 18 to 79 years across three combined cycles of the nationally representative Canadian Health Measures Survey. They compared adherence to moderate-to-vigorous physical activity (MVPA) recommendations (150 minutes per week) under two definitions: accrued in bouts of 10 minutes or more (bouted) versus accrued with no minimum bout requirement (non-bouted). Differences in sociodemographic, fitness, and health characteristics were evaluated using t-tests, chi-square tests, and multivariable linear and logistic regressions adjusting for age, sex, household education, and smoking status.
What was found
More than double the proportion of adults met the physical activity recommendation under the non-bouted definition compared to the bouted definition (45.3% vs. 18.5%). Sociodemographic, health, and fitness characteristics were broadly similar between groups. However, those meeting only the non-bouted criteria compared to the bouted criteria had fewer adults aged 65 years and older, lower MVPA, lower recreational and transport physical activity, higher sedentary time, higher light physical activity, and higher grip strength (numerical effect sizes, regression coefficients, and confidence intervals were not reported in the abstract).
Why it matters
These findings support public health transitions to non-bouted physical activity surveillance, showing that removing the 10-minute threshold substantially increases guideline attainment rates while capturing a population with a health and demographic profile largely consistent with bouted exercisers.
Limits
The cross-sectional design precludes establishing temporal or causal links between activity patterns and health measures. Specific effect estimates, confidence intervals, and test statistics for health differences were not provided in the abstract. Accelerometer compliance and unmeasured lifestyle factors may introduce residual confounding.
Cited by
- supports In 2018, public physical activity guidelines were updated to remove the requirement that exercise had to be performed in bouts of at least 10 minutes.