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Average load (N) among the four groups
| A | B | C | D | |
|---|---|---|---|---|
| Group | 552 ± 64 | 467 ± 83 | 688 ± 117 | 667 ± 82 |
| A | NS | P < 0.04 | P < 0.02 | |
| B | NS | P < 0.00 | P < 0.00 | |
| C | P < 0.04 | P < 0.00 | NS | |
| D | P < 0.02 | P < 0.00 | NS |
Group C was significantly stronger than group A and group B. Group D was also significantly different in strength from group A and group B.
