Table 5. Raw outcomes for change in muscle strength by individual trial.
| Author, year | No. TRT | No. placebo | Measure of muscle strength | TRT group |
Placebo group |
|||
|---|---|---|---|---|---|---|---|---|
| Before* | After* | Before* | After* | |||||
| Mirdamadi et al., 2014 (4) | 25 | 25 | Handgrip strength (kg) | 37.64±9.64 | 42.12±9.06 | 35.17±10.54 | 38.65±8.17 | |
| Stout et al., 2012 (5) | 15 | 13 | Handgrip strength (kg) | 38.6±8.6 | 40.7±7.1 | 44.5±7.6 | 47.0±9.0 | |
| Iellamo et al., 2010 (7) | 20 | 12 | MVC (Nm) | 65.0±15 | 92.1±20† | 65.4±14 | 69.9±16 | |
| PTmax (Nm) | 41.3±17.4 | 74.2±14.8† | 43.6±11.6 | 49.1±9.2 | ||||
| Caminiti et al., 2009 (8) | 31 | 33 | MVC (Nm) | 116.7±26.3 | 135.6±21.2† | 116.7±26.3 | 119.7±26.3 | |
| PTmax (Nm) | 74.0±17.4 | 83.4±16.3† | 74.2±14.4 | 76.3±19.2 | ||||
| Malkin et al., 2006 (9) | 37 | 39 | Handgrip strength (kg) | 40.6±11.1 | +1.0±4.0† | 38.6±8.6 | −20.6±5.3 | |
*, Data are presented as mean ± SD; †, P<0.05 indicates significance of group difference from baseline. MVC, maximal voluntary contraction; PTmax, isokinetic power torque; TRT, testosterone replacement therapy.