Analysis of variance table for the significant effects (and interactions) on balance control of varying height, surface firmness, and visual reference
RMS AP* sway | RMS ML† sway | Sway area | Sway velocity | ||||||
---|---|---|---|---|---|---|---|---|---|
Sourse | df | F value | p Value | F value | p Value | F value | p Value | F value | p Value |
*RMS AP sway = root mean square anterior-posterior sway. | |||||||||
†RMS ML sway = root mean square medial-lateral sway. | |||||||||
Main effects | |||||||||
Height | 2 | 58.24 | <0.0001 | 39.51 | <0.0001 | 65.77 | <0.0001 | 30.54 | <0.0001 |
Surface firmness | 1 | 139.13 | <0.0001 | 159.64 | <0.0001 | 162.11 | <0.0001 | 127.79 | <0.0001 |
Visual reference | 1 | 198.74 | <0.0001 | 33.73 | <0.0001 | 64.29 | <0.0001 | 124.49 | <0.0001 |
Interactions | |||||||||
Height × surface firmness | 2 | 14.81 | <0.0001 | 20.14 | <0.0001 | 43.16 | <0.0001 | 59.24 | <0.0001 |
Height × visual reference | 2 | 73.14 | <0.0001 | 3.08 | ns | 71.58 | <0.0001 | 32.93 | <0.0001 |
Surface firmness × visual reference | 1 | 79.45 | <0.0001 | 34.36 | <0.0001 | 114.66 | <0.0001 | 92.84 | <0.0001 |
Height × surface firmness × visual reference | 2 | 21.53 | <0.0001 | 17.63 | <0.0001 | 60.90 | <0.0001 | 13.29 | <0.0001 |