Table 3 Self-reported weekly physical activity and sedentary behavior by time period, sibling order, and gender
| Â | Older sibling | Younger sibling | ||
|---|---|---|---|---|
Brother (n = 42) | Sister (n = 45) | Brother (n = 44) | Sister (n = 43) | |
Active minutes, mean (std) | ||||
 Summer | 1256.1 (724.0) | 895.0 (506.7) | 1546.4 (1055.6) | 848.0 (697.8) |
 Fall | 1086.6 (527.9) | 777.4 (568.9) | 1086.9 (749.7) | 726.9 (541.5) |
 Δ | −169.5 (847.6) | −117.6 (835.5) | −459.6 (1075.2) | − 121.1 (827.9) |
 P for change | 0.20 | 0.35 | 0.01 | 0.34 |
MVPA MET-minutes, mean (std) | ||||
 Summer | 6570.1 (3914.0) | 4405.1 (3213.3) | 8092.5 (5847.2) | 4402.8 (4018.3) |
 Fall | 6217.7 (3073.2) | 3864.1 (3114.8) | 5830.8 (3897.3) | 3795.1 (2956.4) |
 Δ | − 352.4 (4727.5) | −541.0 (4558.9) | −2261.7 (5981.0) | − 607.8 (4628.1) |
 P for change | 0.63 | 0.43 | 0.02 | 0.39 |
Sitting minutes, mean (std) | ||||
 Summer | 1325.0 (1043.1) | 1168.8 (701.9) | 1450.0 (1535.8) | 1285.2 (1577.7) |
 Fall | 1368.6 (1043.3) | 987.9 (585.7) | 1138.9 (682.6) | 1203.5 (732.3) |
 Δ | 43.6 (1090.2) | − 180.9 (938.8) | −311.1 (1756.0) | −81.7 (1682.4) |
 P for change | 0.80 | 0.20 | 0.25 | 0.75 |
Screen time minutes, mean (std) | ||||
 Summer | 1040.0 (859.6) | 893.2 (652.0) | 1048.0 (779.7) | 828.4 (676.1) |
 Fall | 959.3 (871.0) | 543.9 (337.3) | 641.0 (419.1) | 759.0 (598.2) |
 Δ | −80.7 (919.2) | − 358.3 (752.6) | − 407.0 (891.8) | −69.4 (791.3) |
 P for change | 0.57 | < 0.001 | 0.004 | 0.57 |