Abstract
Background: The increase in screen-based sedentary behavior (SSB) has become a public concern. Several health outcomes have been found to be related to SSB, and their relationships with different types of SSB activities and duration of SSB bouts are different. This study aims to compare the SSB assessed through previous-day recall (PDR) with sedentary time (ST) measured through activPAL.
Methods: Participants comprised 100 Chinese males aged 18–35 years, who wore an activPAL and completed web-based PDRs for seven consecutive days. Pearson’s correlations (r), intraclass correlations (ICC), and Bland–Altman plots were analyzed by day type (weekday, and weekend), segment of day (working time and leisure time), and duration of bouts (≥ 15, ≥ 30, and ≥ 60 min).
Results: The PDR assessed daily SSB was moderately correlated with activPAL assessed ST (r = 0.35, 95 % confidence interval: 0.27, 0.42). The correlations between two methods (both r and ICC values) were higher on weekends than on weekdays, and during leisure time than during working time. Low, but significant, correlations were found for sedentary bouts of ≥ 15 min and ≥ 30 min. Bland-Altman plots revealed − 4.3 h/day of mean difference (95 % limits of agreement: − 11.0, 2.6) between PDR assessed daily SSB and activPAL measured ST.
Conclusions: In summary, there was a fair agreement between the SSB and ST. This Web-based PDR could be used as an easy and accurate tool to assess SSB, and SSB by day type, segment of day, and duration of bouts in young Chinese men.
Methods: Participants comprised 100 Chinese males aged 18–35 years, who wore an activPAL and completed web-based PDRs for seven consecutive days. Pearson’s correlations (r), intraclass correlations (ICC), and Bland–Altman plots were analyzed by day type (weekday, and weekend), segment of day (working time and leisure time), and duration of bouts (≥ 15, ≥ 30, and ≥ 60 min).
Results: The PDR assessed daily SSB was moderately correlated with activPAL assessed ST (r = 0.35, 95 % confidence interval: 0.27, 0.42). The correlations between two methods (both r and ICC values) were higher on weekends than on weekdays, and during leisure time than during working time. Low, but significant, correlations were found for sedentary bouts of ≥ 15 min and ≥ 30 min. Bland-Altman plots revealed − 4.3 h/day of mean difference (95 % limits of agreement: − 11.0, 2.6) between PDR assessed daily SSB and activPAL measured ST.
Conclusions: In summary, there was a fair agreement between the SSB and ST. This Web-based PDR could be used as an easy and accurate tool to assess SSB, and SSB by day type, segment of day, and duration of bouts in young Chinese men.
| Original language | English |
|---|---|
| Pages (from-to) | 199-204 |
| Number of pages | 6 |
| Journal | Advanced Exercise and Health Science |
| Volume | 2 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Sept 2025 |
User-Defined Keywords
- Comparison
- Previous-day recall
- Screen time
- ActivPAL
- Sedentary bouts
- Sedentary types
