Table 5. Differences between Parkour precision landings and Parkour roll landings (roll - precision), including qualitative inferences about the effects of those differences. p value Diff in means as Percentage Diff. in means as % 90% confidence levels Cohen ES Qualitative (%) lower Upper inferences of ES mVF (BW) .1707 -7.3 -15.7 1.8 -.28 moderate-trivial Time to mVF (s) .5825 11.2 -21.0 56.6 .18 unclear Loading rate (BW/s) .3284 -18.7 -43.7 17.4 -.32 unclear mVF = maximal vertical force, BW = body weight, Diff. = difference, ES = effect size.