Table 2.
Changes in body composition before and after the start of the COVID-19 pandemic.
| Point 1 | Point 2 | Point 3 | * p Value | Change between Point 1 and Point 2 | Change between Point 2 and Point 3 | ** p Value | |
|---|---|---|---|---|---|---|---|
| Body weight, kg | 59.3 (10.3) | 59.1 (10.2) | 58.1 (10.5) †‡ | <0.001 | −0.223 (1.621) | −0.524 (1.436) | 0.337 |
| Appendicular muscle mass, kg | 17.5 (3.6) | 17.6 (3.7) | 17.1 (3.7) †‡ | <0.001 | 0.018 (0.740) | −0.302 (0.611) | 0.047 |
| SMI, kg/m2 | 6.7 (0.9) | 6.8 (0.9) | 6.6 (0.9) †‡ | <0.001 | 0.005 (0.289) | −0.117 (0.240) | 0.049 |
| Body fat, kg | 16.7 (6.4) | 16.5 (6.4) | 16.1 (6.5) | 0.274 | −0.177 (1.324) | −0.142 (1.762) | 0.904 |
| Percent body fat, % | 27.6 (7.8) | 27.4 (7.8) | 27.7 (7.4) | 0.692 | −0.160 (1.799) | 0.269 (1.856) | 0.276 |
Mean (SD) of duration between point 1 and point 2 was 15.2 (5.1) months, and duration between point 2 and point 3 was 19.0 (4.3) months. * p value was evaluated among three points by repeated measures ANOVA. To compare the differences among three points, Bonferroni correction was used. † p < 0.05, vs. point 1 and ‡ p < 0.05, vs. point 2. Change between point 1 and point 2 was defined as (data at point 1–data at point 2)/duration (year). Change between point 2 and point 3 was defined as (data at point 2–data at point 3)/duration (year). ** p value was evaluated the differences between change from point 1 to point 2 and change from point 2 to point 3 by paired t test. SMI, skeletal muscle mass index.