Comparison of measured maximal oxygen consumption (V′O2peak) versus predicted maximal oxygen consumption (V′O2max) according to prediction equations from five studies
| Sample | Prediction equation | V′O2peak % predicted | V′O2peak minus V′O2max L·min−1 | Subjects with V′O2peak <LLN# |
| 58 disease-free men, >70 years old | Wasserman et al. [11] | 108±23 | 0.15 (−0.50–0.79) | |
| Jones et al. [8] | 92±20 | −0.18 (−0.87–0.52) | 3 (5) | |
| Blackie et al. [12] | 93±21 | −0.16 (−0.85–0.54) | 4 (7) | |
| Koch et al. [17] | 89±20 | −0.25 (−0.95 –0.45) | 8 (14) | |
| Hakola et al. [13] | 103±24 | 0.04 (−0.65–0.74) | 3 (5) | |
| 41 disease-free women, >70 years old | Wasserman et al. [11] | 117±20 | 0.19 (−0.17–0.55) | |
| Jones et al. [8] | 164±103 | 0.35 (−0.19–0.88) | 0 (0) | |
| Blackie et al. [12] | 88±16 | −0.19 (−0.59–0.22) | 0 (0) | |
| Koch et al. [17] | 90±17 | −0.15 (−0.59–0.28) | 9 (22) | |
| Hakola et al. [13] | 98±18 | −0.03 (−0.41–0.35) | 0 (0) |
Data are presented as mean±sd, mean difference (90% CI) or n (%). LLN: lower limit of normal. #: Wasserman et al. [11] did not provide LLN.