Reported compliance, adverse events, individual study estimates and precision of included studies
| Study | Reported compliance | Reported adverse events (number of events) | ITT individual study estimates RR (95% CI) | Precision (CLR) | Per protocol individual study estimates RR (95% CI) | Precision (CLR) |
|---|---|---|---|---|---|---|
| Askling et al19 | 100% | DOMS (n=11 athletes) | 0.30 (0.10 to 0.88) | 8.8 | NA | NA |
| Gabbe et al20 | Intervention group: 50% decline in participation rate from session 1 to session 2 Control group: 10% decline in participation rate from session 1 to session 2 <10% of athletes participated in season session 2 30% of consenting athletes (n=66) failed to complete one session, while 103 (46.8%) completed at least two sessions | DOMS was primary reason reported for lack of compliance (n=NR) | 1.15 (0.48 to 2.83) | 5.9 | 0.30 (0.08 to 1.12) | 14.0 |
| Engebretsen et al21 | Only 21.1% (12 athletes) completed 20 or more training sessions 63.2% of players reported not having performed any exercises, 7.9% of athletes performed 1–9 sessions and 7.9% of athletes performed 10–19 sessions | DOMS (n=NR) | 2.71 (0.35 to 20.79) | 59.4 | 0.94 (0.29 to 3.07) | 10.6 |
| Petersen et al22 | Team compliance was an average of 91% of the intended training sessions performed during the 10-week midseason period (8% dropout rate in intervention group and 9% dropout rate in control group) Compliance was not measured after the first 10 weeks | DOMS (n=“most players in the intervention group”) | 0.30 (0.17 to 0.53) | 3.1 | NA | NA |
CLR, confidence limit ratio; DOMS, delayed onset muscle soreness; NA, not applicable; NR, not reported; RR, risk or rate ratio.