Change during the piece in length at each end of the stroke measured by the CODA system
| Fixed power head | Floating power head | |||
|---|---|---|---|---|
| Length change (mm) | p Value | Length change (mm) | p Value | |
| Values are the mean differences (SD) between the average displacements during minutes 7–12 compared with minutes 13–18. Positive numbers indicate movement towards the power head. Significance is given by two way analysis of variance with replication. | ||||
| (A) Comparison between fixed and floating power heads | ||||
| Catch | 19.5 (32.6) | <0.01 | —3.5 (36.3) | NS |
| Finish | 7.6 (27.2) | <0.05 | —4.9 (30.8) | NS |
| First piece | Second piece | |||
| Length change (mm) | p Value | Length change (mm) | p Value | |
| (B) Comparison between first and second pieces | ||||
| Catch | 7.6 (50.0) | NS | 8.4 (12.4) | <0.001 |
| Finish | 2.3 (41.4) | NS | 0.4 (7.8) | NS |