Table 2.
Presented are group mean (SEM) data for exercise intensity, EMG activity, stroke force and stroke kinematic variables. Asterisk infer a significant difference between conditions.
| Variable | On-ergometer | On-water | |
|---|---|---|---|
| Exercise intensity (n = 10) | Heart rate (beats·min-1) | 174 (3) | 175 (3) |
| Stroke rate (strokes·min-1) | 81 (2) | 82 (2) | |
| EMG activity (n = 10) | iEMG of TB (μV.s) | 179 (10) ** | 239 (15) |
| iEMG of LD (μV.s) | 137 (14) * | 158 (12) | |
| iEMG of AD (μV.s) | 494 (66) ** | 340 (35) | |
| iEMG of VL (μV.s) | 82 (9) | 83 (6) | |
| Stroke force (n = 7) | Peak force (N) | 223 (19) | 238 (22) |
| Time to peak (s) | .16 (.02) | .18 (.01) | |
| Time to peak (%) | 11.8 (1.1) | 13.4 (.3) | |
| RFDpeak (N·s-1) | 1215 (153) | 1098 (84) | |
| RFD50 (N·s-1) | 1165 (116) ** | 1833 (119) | |
| Stroke impulse (N.s) | 67 (4) | 79 (8) | |
| Stroke kinematics (n=10) | Angle of entry (˚) | 134 (2) | 133 (2) |
| Time to vertical (s) | .16 (.02 ) * | .19 (.02) | |
| Draw time (s) | .40 (.01) | .40 (.01) | |
| Draw/transition ratio (%) | 57.8 (1.4) | 58.0 (1.3) |
* inferring p < 0.05,
** inferring p < 0.01.