| Abstract |
To examine the relationships of the level of energy expenditure estimated by 3-day activity record (3AR) and 1-day activity recall (1AR) and to explore a physical activity pattern of a day, a total of 118 college men (n=30, 22 yrs, 68 kg, 176 cm) and women (n=88, 21 yrs, 55 kg, 164 cm) participated in the study. They were instructed to record daily activities and time spent for the activity in details for each of 3AR and 1AR. The records were transformed to energy expenditure per day (kcal/day) after each activity was coded to MET values (Ainsworth et al., 1993). The 3AR vs 1AR were 2719 550 vs 2825 556 kcal and 2215 350 vs 2311 430 kcal for men and women, respectively (p<0.05), and the energy expenditure for total was 2336 466 vs 2439 512 kcal for men vs women (p<0.05). The Pearson Correlation between 3AR and 1AR was r=0.754 and r=0.807 for men and women respectively (p<0.001). The most of the time of a day was spent within a activity of intensity under 4 MET and they spent less than 4 hours for 2.1-4 MET. The average variation of daily activity level in 3AR was 50 kcal higher in men (355 220 kcal) than women (298 235 kcal) (p>0.05), but the maximal variation of daily activity was more than 100 kcal wider in men (556 335 kcal) than in women (440 342 kcal) (p<0.05). Based on the results, the IAR was consistently higher than 3AR for about 100 kcal. When the daily variation of activity level was 300 kcal and the variation was larger for men, in particular, were counted, the 1AR did not appear to be appropriate tool to estimate the daily expenditure level. However, the 1AR reported consistent activity level and seemed to be representative for the mass population study. |