an increasing trendP < 0.05
Subjects with a high frequency of physical activity (those who reported doing physical activity very often) were significantly more likely than those who occasionally or never did physical activity to show an increasing trend in energy expenditure originating from physical activity, mean steps, and mean activity counts per day originating from an Actiwatch ( P < 0.05 for a linear trend test). 12 The correlation coefficient between subjective and objective records was 0.97 ( P < 0.001) for assumed amount of sleep, and th