Research Article
Metabolic Energy Correlates of Heart Rate Variability Spectral Power Associated with a 900-Calorie Challenge
Table 2
Comparison of uncontrolled normal and paced breathing conditions.
| Variable | Normal breathing | Paced breathing | P-value | Correlation | | mean ± SE | mean ± SE | | |
| Respiratory quotient | 0.85 ± 0.01 | 1.08 ± 0.01 | | , | Oxygen consumption (mL·min−1) | 313 ± 18 | 353 ± 17 | | , | Energy expenditure (Cal·min−1) | 1.5 ± 0.08 | 1.8 ± 0.08 | | , | Standard deviation of RR intervals (ms) | 80 ± 6 | 95 ± 10 | | , | Total spectral power (ms2·103) | 445 ± 8 | 528 ± 8 | | , | Very-low-frequency spectral power (ms2·103) | 65 ± 2 | 91 ± 2 | | , | Low-frequency·high-frequency−1 spectral power | 0.6 ± 0.2 | 0.8 ± 0.2 | | , |
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