**Table 1.** Results of meta-analyses for overall criterion-related validity correlation coefficients across the 20-m shuttle run test protocols.

Protocols |
K |
N |
r_{c} |
r_{p} |
95% CI^{a} |
95% CV^{b} |
% variance^{c} |
Q statistic |

Performance score only |

Léger^{d} |
48 |
2,222 |
.77 |
.84 |
.80-.89 |
.54-1.00 |
15.15 |
313.42* |

Eurofit^{e} |
11 |
278 |
.66 |
.73 |
.60-.86 |
.43-1.00 |
42.50 |
18.10 |

QUB^{f} |
5 |
401 |
.68 |
.71 |
.64-.77 |
.64-.77 |
79.86 |
1.34 |

Dong-Ho^{g} |
1 |
127 |
.62 |
.66 |
- |
- |
- |
- |

Performance score with other variables |

Léger^{d} |
11 |
893 |
.80 |
.87 |
.81-.94 |
.67-1.00 |
14.94 |
73.04* |

Eurofit^{e} |
1 |
55 |
.85 |
.95 |
- |
- |
- |
- |

Dong-Ho^{g} |
1 |
127 |
.73 |
.78 |
- |
- |
- |
- |

^{d}Léger’s protocol starts at 8.5 km/h and increases 0.5 km/h each minute (Léger et al., 1984, 1988)

^{e}Eurofit protocol starts at 8.0 km/h and increases 0.5 km/h each minute, but the second stage increases by 1.0 km/h (Council of Europe Committee for the Development of Sport, 1988)

^{f}QUB’s protocol starts at 8.0 km/h and increases 0.5 km/h each minute (Riddoch, 1990)

^{d}Dong-Ho’s protocol starts at 7.5 km/h and increases 0.5 km/h each minute (Dong-Ho et al., 2014).

* p < 0.05

^{c}Percentage of variance accounted for by statistical artefacts including sampling error and measurement error of the 20-m shuttle run test

^{b}95% credibility interval

^{a}95% confidence interval

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 20-m shuttle run test