The phrase "adults activity level" is not correct in written English.
It should be "adults' activity level" to indicate possession.
Example: "The study examined the relationship between diet and adults' activity level."
Alternatives: "activity level of adults" or "activity levels among adults."
The role of marital status in predicting older adults' activity levels is not consistent in the literature.
Fewer studies investigated how childhood and adolescence activity levels relate to adult activity levels (for a review, see [ 15]).
Alongside these suggestions for increasing parents' awareness of their children's PA levels lies the possible relevance and importance of increasing awareness of recommendations for adult activity levels and encouraging more PA amongst parents themselves.
With a receiver operating characteristics (ROC) curve we assessed how well the LAPAQ identifies older adults whose activity level is below official recommendations.
However, older adults' physical activity level has been shown to be lower on Sundays than on the other days of the week [ 27].
So far, studies either focused on total activity over a certain period of time, e.g., per week or per day, usually in order to evaluate older adults' physical activity level with respect to current guidelines, or on correlates of overall physical activity [ 11, 12], or on motivators and barriers [ 13, 14].
Adults with an activity level exceeding the median level of the whole group are classified as active and adults below this level are classified as inactive.
Matching criteria for controls included gender, age (±2 years for children <18 years; ±5 years for adults), BMI (±10 percentiles of BMI for age for children; ±3 kg/m for adults), and physical activity level (see the Supplemental Experimental Procedures for details).
The intent of both the absolute and the relative PA questions was to quickly and easily classify older adults by their activity level.
