Table 1.
Reliability results, showing the mean ± SD values, percentage differences, and intra-device TEM (%) of V E, VO2 and VCO2 (L min−1) of repeated trials by the MetaMax 3B across a range of low, moderate, high metabolic rates generated by the Gas Exchange System Validator
| Metabolic rate | Trial 1 | Trial 2 | % difference# | Intra-device TEM (%) | |
|---|---|---|---|---|---|
| V E (BTPS, L min−1) | Low | 9.94 ± 0.06 | 9.93 ± 0.08 | −0.1 | 0.1 |
| Medium | 29.53 ± 0.28 | 29.69 ± 0.23 | 0.5 | 0.4 | |
| High | 58.06 ± 0.61 | 58.10 ± 0.65 | 0.1 | 0.0 | |
| VO2 (STPD, L min−1) | Low | 0.30 ± 0.01 | 0.30 ± 0.00 | 1.9* | 1.3 |
| Medium | 1.62 ± 0.01 | 1.65 ± 0.01 | 1.8* | 1.3 | |
| High | 2.74 ± 0.03 | 2.80 ± 0.03 | 2.3** | 1.6 | |
| VCO2 (STPD, L min−1) | Low | 0.29 ± 0.01 | 0.29 ± 0.00 | 2.5* | 1.7 |
| Medium | 1.57 ± 0.02 | 1.59 ± 0.02 | 1.2* | 0.8 | |
| High | 2.66 ± 0.04 | 2.69 ± 0.04 | 1.1* | 0.8 |
TEM% technical error of measurement expressed as a percentage of mean
#Percentage differences were calculated from mean data using four decimal places, but the data are reported here to two decimal places only
* Significant difference (p < 0.05)
** Significant difference (p < 0.01) from t test