Table 1 The ratio of shoulder load during lever propulsion to the shoulder load during handrim propulsion
From: Shoulder joint contact force during lever-propelled wheelchair propulsion
Shoulder joint | Inclination angle (°) | Handrim | Gear ratio of Lever propulsion mechanism | ||
|---|---|---|---|---|---|
1.5 | 1 | 1/1.5 | |||
Intersegmental force | 0 | 1.0 (72 N) | 1.4 | 1.0 | 1.1 |
2 | 1.0 (100 N) | 1.0 | 0.8 | 0.9 | |
4 | 1.0 (114 N) | 1.0 | 0.8 | 0.7 | |
Contact force | 0 | 1.0 (863 N) | 0.9 | 0.6 | 0.7 |
2 | 1.0 (1519 N) | 0.6 | 0.4 | 0.4 | |
4 | 1.0 (1827 N) | 0.6 | 0.4 | 0.3 | |