Table 5.
Measured motor competence for the three definitions of generalized joint hypermobility (GJH) at follow-up
| GJH4 | GJH5 | GJH6 | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Motor competence | < GJH4 | ≥ GJH4 | p-value | < GJH5 | ≥ GJH5 | p-value | < GJH6 | ≥ GJH6 | p-value |
| (n = 171) | (n = 130) | (n = 217) | (n = 84) | (n = 237) | (n = 64) | ||||
| 1 Zigzag hop, no. of consecutive hops, median (range) | |||||||||
| Right leg (n = 300) | 6 (0–6) | 6 (2–6) | 0.72 | 6 (0–6) | 6 (3–6) | 0.07 | 6 (0–6) | 6 (3–6) | 0.018* |
| Left leg (n = 298) | 6 (0–6) | 6 (2–6) | 0.67 | 6 (0–6) | 116 (2–6) | 0.77 | 6 (0–6) | 6 (2–6) | 0.74 |
| Vertical jump, cm, (n = 299), mean (sd) | 32.31 (6.42) | 31.46 (6.86) | 0.33 | 32.31 (6.33) | 31.00 (7.26) | 0.15 | 32.30 (6.29) | 30.62 (7.59) | 0.12 |
| Sway, mean (sd) | |||||||||
| Romberg open eyes (n = 300) | |||||||||
| 295% areal, cm 2 | 4.57 (2.26) | 5.11 (2.42) | 0.05 | 4.72 (2.24) | 5.01 (2.61) | 0.72 | 4.73 (2.26) | 5.10 (2.62) | 0.45 |
| 3Anterior-posterior range, cm | 2.53 (0.73) | 2.67 (0.84) | 0.24 | 2.56 (0.75) | 2.67 (0.85) | 0.39 | 2.57 (0.75) | 2.68 (0.90) | 0.51 |
| 4Medial-lateral range, cm | 2.56 (0.67) | 2.66 (0.75) | 0.48 | 2.61 (0.70) | 2.57 (0.72) | 0.34 | 2.61 (0.70) | 2.58 (0.73) | 0.54 |
| 5Centre of pressure path length, mm | 56.13 (11.74) | 56.53 (9.23) | 0.46 | 56.10 (11.15) | 56.83 (9.53) | 0.39 | 56.24 (10.99) | 56.54 (9.68) | 0.74 |
| Romberg closed eyes (n = 300) | |||||||||
| 295% areal, cm 2 | 8.83 (3.94) | 9.39 (5.43) | 0.56 | 8.85 (3.78) | 9.63 (6.35) | 0.82 | 9.08 (4.74) | 9.02 (4.26) | 0.87 |
| 3Anterior-posterior range, cm | 3.62 (0.86) | 3.67 (1.13) | 0.88 | 3.61 (0.85) | 3.72 (1.26) | 0.94 | 3.66 (1.03) | 3.57 (0.83) | 0.53 |
| 4Medial-lateral range, cm | 3.78 (0.92) | 3.92 (0.90) | 0.20 | 3.82 (0.90) | 3.90 (0.95) | 0.61 | 3.85 (0.95) | 3.82 (0.77) | 0.85 |
| 5Centre of pressure path length, mm | 85.55 (24.25) | 85.17 (18.69) | 0.59 | 84.95 (22.73) | 86.52 (20.04) | 0.30 | 85.64 (23.34) | 84.40 (16.07) | 0.79 |
| One leg stance (n = 298) | |||||||||
| 295% areal, cm 2 | 9.80 (3.19) | 10.13 (3.73) | 0.80 | 9.90 (3.19) | 10.04 (4.02) | 0.61 | 10.01 (3.37) | 9.67 (3.69) | 0.18 |
| 3Anterior-posterior range, cm | 4.54 (1.09) | 4.63 (1.19) | 0.73 | 4.58 (1.13) | 4.57 (1.15) | 0.88 | 4.61 (1.15) | 4.44 (1.05) | 0.17 |
| 4Medial-lateral range, cm | 3.25 (0.56) | 3.27 (0.61) | 0.57 | 3.27 (0.55) | 3.24 (0.65) | 0.18 | 3.27 (0.57) | 3.23 (0.63) | 0.11 |
| 5Centre of pressure path length, mm | 132.26 (37.19) | 129.23 (32.72) | 0.54 | 132.72 (37.28) | 126.27 (29.19) | 0.33 | 132.68 (37.02) | 124.34 (27.11) | 0.15 |
1Zigzag hop measured on a scale from 0–6, where 6: 5 consecutive jumps in first trial; 5: 5 consecutive jumps in second trial; 4: maximum of 4 consecutive jumps; 3: maximum of 3 consecutive jumps; 2: maximum of 2 consecutive jumps; 1: maximum of 1 consecutive jumps; 0: maximum of 0 consecutive jumps. 295% confidence ellipse area of the Centre of Pressure (cm2) 3Anterior-posterior displacement (cm) 4Medial-lateral range displacement (cm) 5Centre of pressure path length (mm).
Methods/Hypothesis testing: Mann–Whitney U-test. Significant difference between groups are marked with *and written with bold.