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Table 4 Comparison of momentary energy expenditure based on indirect calorimetric gas analysis between room and ventilated hood

From: Comparison of energy expenditure measurements by a new basic respiratory room vs. classical ventilated hood

Energy expenditure, oxygen uptake & carbon dioxide production & respiratory exchange ratio

ROOM vs. HOOD

Subjects of P1 and P2 room vs. hood

Room

(mean ± SD)

Hood

(mean ± SD)

p-value

Subjects of P1 + P2 (n = 62)

 24h_EE

1597.2 ± 262.3

1585.2 ± 260.0

0.543

\(\dot{\mathrm{V}}\) O2

230.3 ± 37.7

226.0 ± 36.4

0.139

\(\dot{\mathrm{V}}\) CO2

181.5 ± 32.0

187.9 ± 35.5

0.031*

 RER

0.79 ± 0.05

0.83 ± 0.05

 < 0.001*

Subjects of P1 room vs. hood

Minimal activity vs. rest

Room

(mean ± SD)

Hood

(mean ± SD)

p-value

Subjects of P1 (n = 32)

 24h_EE

1619.8 ± 271.6

1574.5 ± 283.6

0.158

\(\dot{\mathrm{V}}\) O2

234.0 ± 39.1

224.3 ± 39.4

0.051

\(\dot{\mathrm{V}}\) CO2

182.6 ± 33.4

186.1 ± 39.7

0.391

 RER

0.78 ± 0.05

0.83 ± 0.06

 < 0.001*

Subjects of P2 room vs. hood

Rest vs. rest

Room

(mean ± SD)

Hood

(mean ± SD)

p-value

Subjects of P2 (n = 30)

 24h_EE

1573.0 ± 254.4

1596.5 ± 236.7

0.281

\(\dot{\mathrm{V}}\) O2

226.4 ± 36.4

227.8 ± 33.6

0.614

\(\dot{\mathrm{V}}\) CO2

180.4 ± 30.9

189.9 ± 31.0

0.029*

 RER

0.80 ± 0.04

0.83 ± 0.05

0.015*

  1. Legend: SD Standard deviation, P1 Protocol 1, P2 Protocol 2, n Number of subjects, 24h_EE Energy expenditure in 24 h (kcal), \(\dot{V}\)O2 Rate of oxygen uptake (ml/min), \(\dot{V}\)CO2 Rate of carbon dioxide production (ml/min), RER respiratory exchange ratio
  2. *Significant difference
  3. Significance α < 0.05