Table 3. Results of the within-study moderator analyses for criterion-related validity correlation coefficients across the distance- and time-based walk/run field tests^†.

Effect	K	N	rc	rp	95% CIa	95% CVb	% variancec	Q statistic
Number of predictorsd
One predictor	16	1,400	0.63	0.65	0.59–0.71	0.46–0.84	32.45	34.80*
Multiple predictors	16	1,400	0.76	0.79	0.75–0.82	0.67–0.90	37.44	27.93*
VO2max absolute
VO2max (ml/kg/min)	32	1,809	0.61	0.63	0.59–0.68	0.46–0.81	47.78	36.55
VO2max (l/min)	32	1,809	0.36	0.37	0.32–0.42	0.25–0.49	80.59	8.05
VO2max relative to fat-free mass
VO2max (ml/kg/min)	16	864	0.67	0.70	0.65–0.74	0.63–0.76	85.45	2.85
VO2max (ml/kg FFM/min)	16	864	0.48	0.50	0.42–0.58	0.27–0.73	46.49	19.24
Maximal aerobic speed
VO2max (ml/kg/min)	11	176	0.57	0.59	0.47–0.70	0.43–0.74	84.13	2.17
MAS (km/h)	11	176	0.68	0.71	0.60–0.81	0.51–0.90	67.30	5.59

Note. K, number of rs; N, total sample size; r_c, overall weighted mean of r corrected for sampling error only; r_p, overall weighted mean of r corrected for sampling error and measurement error of the field tests;

^a95% confidence interval;

^b95% credibility interval;

^cPercentage of variance accounted for by statistical artefacts including sampling error and measurement error of the field tests;

^dOnly performance score (“one predictor”) or performance score plus other variables (“multiple predictors”); VO₂max, maximal oxygen uptake; FFM, fat-free mass; MAS, maximal aerobic speed.

^†Because of the low K in each field test, the overall results are reported.

* p < 0.05