Table 1. Muscle activities of the push-up plus on the stable and unstable supports in the “up position” and the “down position” (unit: %MVIC).
| Variable | muscle | SP-C | KP-C | SP-S | KP-S |
| Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | ||
| Up-postion | TU | 4.61 (3.333) | 4.97 (6.478) | 6.91 (7.101) | 4.84 (2.873) |
| TM▲♦ | 7.69 (4.841) | 7.63 (5.251) | 15.68 (7.924) | 11.21 (8.987) | |
| TL▲ | 5.81 (4.306) | 4.43 (2.863) | 8.01 (4.845) | 6.64 (5.559) | |
| LD | 13.49 (12.123) | 6.36 (3.978) | 14.36 (9.325) | 8.75 (5.788) | |
| SA | 29.84 (10.357) | 22.39 (18.919) | 39.37 (24.919) | 38.58 (23.625) | |
| Down-position | TU+■▲ | 42.84 (21.354) | 25.73 (11.912) | 73.26 (16.342) | 40.80 (26.119) |
| TM▲ | 38.32 (29.711) | 46.29 (20.548) | 69.91 (25.024) | 60.71 (32.678) | |
| TL+■ | 34.59 (16.489) | 21.48 (13.900) | 39.83 (19.561) | 23.55 (12.867) | |
| LD+▲ | 7.24 (5.179) | 15.55 (10.407) | 20.23 (12.611) | 15.85 (9.646) | |
| SA+♦ | 18.44 (15.052) | 9.47 (15.124) | 24.69 (22.281) | 18.60 (24.485) |
▲: SP-C and SP-S showed a statistically significant difference. ♦: KP-C and KP-S showed a statistically significant difference. +: SP-C and KP-C showed a statistically significant difference. ■: SP-S and KP-S showed a statistically significant difference. TU, upper trapezius; TM, middle trapezius; TL, lower trapezius; LD, latissimus dorsi; SA, serratus anterior