Table 2.
Absolute grasp heights used in movements to each target platform height (A) and differences in grasp heights between target heights conditions (B) in individuals with stroke and healthy controls
| Target height (%) | Stroke, less-affected arm (mm) | Stroke, affected arm (mm) | Controls (n = 17) | ||||
|---|---|---|---|---|---|---|---|
| All (n = 17) | VPI (n = 7) | No VPI (n = 10) | All (n = 17) | VPI (n = 7) | No VPI (n = 10) | ||
| (A) Absolute grasp heights at each target height condition, mean (SD) | |||||||
| 35 | 300.8* (82.6) | 261.5** (51.6) | 329.0 (80.3) | 314.3 (81.1) | 300.0 (60.1) | 325.3 (81.9) | 344.7 (59.5) |
| 50 | 202.5 (66.9) | 208.2 (52.5) | 198.5 (75.6) | 231.2* (68.8) | 254.0** (40.4) | 215.3 (79.4) | 180.4 (63.9) |
| 70 | 164.3 (59.7) | 171.2 (48.8) | 159.5 (66.1) | 155.6 (49.4) | 187.7 (44.5) | 135.7 (41.2) | 144.3 (49.4) |
| 80 | 154.6 (49.0) | 167.3 (41.0) | 145.3 (52.5) | 152.0 (53.4) | 166.9 (45.0) | 142.5 (56.3) | 123.4 (32.0) |
| Between targets (%) | Stroke, less-affected arm (mm) | Stroke, affected arm (mm) | Controls (n = 17) | ||||
|---|---|---|---|---|---|---|---|
| All (n = 17) | VPI (n = 7) | No VPI (n = 10) | All (n = 17) | VPI (n = 7) | No VPI (n = 10) | ||
| (B) Differences in grasp heights between targets, mean (SD) | |||||||
| 35–50 | 98.3** (80.3) | 53.3*** (33.3) | 130.5 (93.5) | 83.1*** (72.8) | 45.9*** (55.7) | 110.0* (82.4) | 164.4 (67.2) |
| 35–70 | 136.5** (85.4) | 90.3*** (52.2) | 169.5 (97.0) | 158.7 (83.0) | 112.2** (68.2) | 189.6 (92.1) | 200.4 (67.6) |
| 35–80 | 146.1** (85.8) | 94.2*** (39.6) | 183.7 (100.4) | 162.4* (84.8) | 133.0** (94.2) | 182.9 (87.9) | 221.3 (56.1) |
| 50–70 | 38.2 (57.2) | 36.9 (41.1) | 39.0 (68.6) | 75.5 (64.2) | 66.3 (18.6) | 79.6 (80.1) | 36.0 (61.0) |
| 70–80 | 9.7 (29.4) | 3.9 (28.0) | 14.2 (31.6) | 3.7 (22.3) | 20.8 (48.9) | −6.8 (28.7) | 20.9 (33.0) |
VPI visuo-perceptual impairment
* p < 0.025, ** p < 0.01, *** p < 0.001 compared to controls