Table 2.
Cardiorespiratory measures at rest
| Children without obesity | Children with obesity | |||||
|---|---|---|---|---|---|---|
| Girls (n=13) | Boys (n=14) | All (n=27) | Girls (n=17) | Boys (n=29) | All (n=46) | |
| HR (bpm) | 96 ± 9* | 79 ± 18 | 87 ± 16 | 95 ± 11* | 91 ± 10 | 93 ± 10 |
| HR (% Predicted Max) | 44 ± 4* | 37 ± 8 | 40 ± 8 | 44 ± 5* | 42 ± 5 | 43 ± 4.8 |
| HR (% Maximum) | 50 ± 6* | 42 ± 10 | 46 ± 9 | 49 ± 5* | 48 ± 5 | 49 ± 5 |
| V̇E (L/min) | 9.71 ± 1.12 | 9.79 ± 2.17 | 9.49 ± 1.74 | 10.68 ± 1.95# | 11.27 ± 1.77# | 11.05 ± 1.84# |
| V̇Ecorr (L/min) | 5.42 ± 1.01 | 6.20 ± 1.88 | 5.82 ± 1.55 | 6.69 ± 1.98# | 7.05 ± 1.41# | 6.92 ± 1.63# |
| VT (L) | 0.55 ± 0.09 | 0.62 ± 0.13 | 0.59 ± 0.11 | 0.62 ± 0.18 | 0.61 ± 0.13 | 0.62 ± 0.15 |
| Fb (bpm) | 17.0 ± 2.7 | 15.7 ± 2.8 | 16.3 ± 2.8 | 17.7 ± 4.4# | 18.7 ± 3.6# | 18.3 ± 3.9# |
| V̇O2 (L/min) | 0.21 ± 0.02 | 0.23 ± 0.04 | 0.23 ± 0.04 | 0.26 ± 0.05# | 0.28 ± 0.05# | 0.27 ± 0.06# |
| V̇CO2 (L/min) | 0.17 ± 0.02 | 0.20 ± 0.04 | 0.19 ± 0.04 | 0.2 ± 0.05# | 0.24 ± 0.06# | 0.23 ± 0.05# |
| V̇E/V̇O2 ratio | 44.1 ± 6.5 | 41.0 ± 5.9 | 42.5 ± 6.3 | 41.6 ± 6.4 | 40.9 ± 6.5 | 41.2 ± 6.5 |
| V̇Ecorr/V̇O2 ratio | 25.9 ± 6.5 | 25.7 ± 5.2 | 25.8 ± 4.8 | 25.6 ± 4.6 | 25.5 ± 4.6 | 25.5 ± 4.5 |
| V̇E/V̇CO2 ratio | 52.0 ± 3.1 | 49.3 ± 5.0 | 50.6 ± 4.4 | 49.0 ± 7.1# | 46.7 ± 5.5# | 47.6 ± 6.2# |
| V̇Ecorr/V̇CO2 ratio | 30.5 ± 2.5 | 30.8 ± 5.0 | 30.7 ± 3.9 | 29.9 ± 2.9 | 29.0 ± 3.2 | 29.3 ± 3.1 |
| PETCO2 (Torr) | 39.1 ± 3.5 | 38.2 ± 4.3 | 38.6 ± 3.9 | 39.1 ± 3.5 | 40.0 ± 3.5 | 39.7 ± 3.5 |
Data are mean ± SD. HR: heart rate; V̇E: minute ventilation; V̇Ecorr: minute ventilation corrected for the volume of dead space imposed by the breathing apparatus; VT: tidal volume; Fb: breathing frequency; V̇O2: oxygen uptake; V̇CO2: carbon dioxide production; PETCO2: partial pressure of endtidal CO2.
#
Significantly different compared with children without obesity, p < 0.05;
*
Significantly different between sexes, p < 0.05.