TABLE 3.
Baseline Demographics (N = 51)a
| Value | |
|---|---|
| Age, y | 12.7 ± 1.1 |
| Female sex, % | 51 |
| Weight, kg | 55.8 ± 10.1 |
| Height, cm | 165.5 ± 8.4 |
| BMI, median (IQR), kg/m2 | 20.2 (17.6-22.0) |
| Previously treated for knee pain, % | 35 |
| Difficulty with kneeling, %b | 58 |
| Use of pain medication for knee pain, % | 12 |
| Physical activity, min, mean (95% CI)c | |
| Sedentary | 344.2 (330.3-358.1) |
| Average light | 333.8 (315.7-351.9) |
| Average moderate | 115.5 (106.4-124.6) |
| Average vigorous | 133.1 (117.5-148.7) |
| Moderate to vigorous | 248.7 (225.1-272.2) |
| Reached WHO minimum physical activity recommendations per day, % | 92 |
aValues are reported as mean ± SD unless otherwise indicated. BMI, body mass index; IQR, interquartile range; KOOS, Knee injury and Osteoarthritis Outcome Score; WHO, World Health Organization.
bBased on participants reporting “moderate” or “severe” difficulties on question 5 of the KOOS Sport and Recreation subscale.
cBased on available ActiGraph data from 47 adolescents with Osgood-Schlatter disease; there were missing data from 4 participants at baseline.