“…Similar to previous research, physically active and healthy volunteers were used as surrogates for a tactical population (Mala et al, 2015; Stevenson et al, 2017; Williams-Bell et al, 2009). The recruitment of civilians allowed for similar proportions of males and females with divergent physical abilities (Stevenson et al, 2017). G*Power software (v3.1.9.2, Universität Kiel, Germany) confirmed post hoc that the sample size of 20 was sufficient for a correlation, point biserial model, and ensured the data could be interpreted with a moderate effect level of 0.50 (Hopkins, 2004), and a power level of 0.80 when significance was set at 0.05 (Faul et al, 2007).…”