Table 2 Cardiorespiratory variables and muscle efficiency at the end of exercise and V̇O2 onset kinetics.
Individuals with chronic low back pain | Healthy individuals | Time effect | Group effect | Effect size (group effect) | 95% CI of the difference of the means | |
|---|---|---|---|---|---|---|
V̇O2 (L min−1) | 1.34 ± 0.21 | 1.25 ± 0.16 | < 0.001 | 0.409 | 0.00 | − 0.1; 0.26 |
V̇CO2 (L min−1) | 1.32 ± 0.18 | 1.33 ± 0.18 | < 0.001 | 0.960 | 0.00 | − 0.19; 0.17 |
HR (beats min−1) | 135.28 ± 20.80 | 138.77 ± 23.95 | < 0.001 | 0.669 | 0.00 | − 24.95; 11.40 |
V̇E (L min−1) | 46.51 ± 11.52 | 43.10 ± 6.81 | < 0.001 | 0.196 | 0.01 | − 6.47; 12.91 |
RER | 1.01 ± 0.14 | 1.06 ± 0.08 | < 0.001 | 0.501 | 0.01 | − 0.14; 0.02 |
Energy expenditure (J s−1) | 429.77 ± 91.18 | 412.90 ± 85.02 | – | 0.493 | 0.17 | – |
Mechanical efficiency (%) | 4.7 ± 0.81 | 5.3 ± 1.16 | – | 0.034 | 0.61 | – |
Amplitude V̇O2 (L min−1) | 1.01 ± 0.23 | 0.95 ± 0.15 | – | 0.717 | 0.11 | − 0.18;0.25 |
Mean response time (s) | 59.66 ± 18.38 | 53.28 ± 24.72 | – | 0.438 | 0.24 | − 12.89; 27.54 |
