Table 1.
Descriptive characteristics of all participants (n = 40).
| Characteristic | Value |
|---|---|
| Bilateral knee OA cases, n (%) | 28 (70) |
| Concomitant hip OA cases, n (%) | 2 (5.0) |
| Sex (Female), n (%) | 24 (60) |
| Race, n (%) | |
| Black or African American | 29 (72.5) |
| White | 10 (25) |
| Other | 1 (2.5) |
| Charlson comorbidity index, n (%)a | |
| 0 | 7 (17.5) |
| 1–2 | 19 (47.5) |
| 3–4 | 11 (27.5) |
| ≥ 5 | 3 (7.5) |
| Analgesic use, n (%)b | 25 (62.5) |
| BMI CDC classifications, % | |
| Normal weight (18.5–24.9 kg/m2) | 3 (7.5) |
| Overweight (25–29.9 kg/m2) | 9 (22.5) |
| Obesity class I or II (30–39.9 kg/m2) | 18 (45) |
| Obesity class III (≥ 40 kg/m2) | 10 (25) |
| BMI, kg/m2 | 34.69 ± 7.00 |
| Age, y | 57.55 ± 8.95 |
| Weight, kg | 99.61 ± 21.53 |
| Height, m | 1.69 ± 0.09 |
| KOOS subscales, 0–100 | |
| Pain | 53.61 ± 23.28 |
| other Symptoms | 53.48 ± 24.46 |
| Function in daily living | 58.98 ± 22.87 |
| Function in sport & recreation | 34.50 ± 32.14 |
| Knee-related quality of life | 35.78 ± 24.18 |
| UCLA, 1–10 | 4.97 ± 2.14 |
| TSK, 17–68 | 39.98 ± 7.54 |
| Peak joint moments, %Bw*Ht | |
| Ankle dorsiflexion | 6.40 ± 1.76 |
| Knee flexion | 3.26 ± 1.41 |
| Hip flexion | 3.16 ± 1.60 |
| Knee adduction | 5.79 ± 2.32 |
| Peak knee adduction moment impulse, %Bw*Ht*s | 3.21 ± 1.66 |
| Gait speed, m/s | 0.57 ± 0.21 |
Note. Data under “Value” presented as mean ± standard deviation or frequencies (%).
Abbreviations: BMI, Body mass index; CDC, Centers for Disease Control and Prevention;
KOOS, Knee Injury and Osteoarthritis Outcome Score; TSK, Tampa Scale for Kinesiophobia; UCLA, University of California Los Angeles activity scale.
a
Higher index indicates greater severity of comorbid diseases.
b
Self-reported use of analgesic for knee at least 1 time per week.