Table 1 Descriptive statistics for 24-h extrapolated variables from recalculated 30 and previously published 60-min of REE metabolic data.

From: Proposed shorter duration protocols for measuring resting energy expenditure utilizing whole-room indirect calorimetry

Ā 

Mean

± SDa

SEb

Mean

± SD

SE

p

Delta (%)c

30-min (N = 10)

Recalculated propane stoichiometry

Recalculated propane combustion

Ā 

Burn rate (g/m)

0.1684

0.0117

0.0037

-------

------

------

------

---------

REE (MJ/d; (kcal/d))d

12.1 (2890)

0.8 (200)

0.3 (63)

11.9 (2840)

1.0 (232)

0.3 (73)

0.70

āˆ’1.8 ± 3.0

VO2 (l/d)e

617.1

42.8

13.5

618.0

52.1

16.5

0.92

0.1 ± 3.5

VCO2 (l/d)f

370.3

25.7

8.1

364.9

25.0

7.9

0.98

āˆ’1.4 ± 1.0

RQ (VO2/VCO2)g

0.60

0.00

0.00

0.59

0.02

0.01

0.87

āˆ’1.8 ± 3.0

60-min (N = 10)h

Propane stoichiometry

Propane combustion

Ā 

Burn rate (g/m)

0.1684

0.0117

0.0037

-------

--------

------

------

---------

REE (MJ/d; (kcal/d))

12.1 (2890)

0.8 (200)

0.3 (63)

11.9 (2856)

1.0 (235)

0.3 (74)

0.73

āˆ’1.2 ± 2.1

VO2 (l/d)

617.1

42.8

13.5

621.2

52.1

16.5

0.85

0.6 ± 0.8

VCO2 (l/d)

370.3

25.7

8.1

370.5

27.2

8.6

0.91

0.0 ± 0.8

RQ (VO2/VCO2)

0.60

0.00

0.00

0.60

0.01

0.00

0.81

āˆ’0.2 ± 2.1

Subjects (N = 35)h

24-h from 60-min

Recalculated 24-h from 30-min

Ā 

REE (MJ/d; (kcal/d))

8.1 (1929)

1.7 (410)

0.3 (69)

8.1 (1946)

1.7 (401)

0.3 (68)

0.22

1.1 ± 4.1

MREE (MJ/d; (kcal/d))i

6.7 (1598)

1.3 (311)

0.2 (53)

6.7 (1598)

1.3 (311)

0.2 (53)

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---------

VO2 (l/d)

397.9

85.8

14.5

401.2

83.9

14.2

0.26

1.0 ± 4.3

VCO2 (l/d)

326.4

67.1

11.3

329.9

66.8

11.3

0.17

1.2 ± 4.6

RQ (VO2/VCO2)

0.84

0.04

0.01

0.84

0.05

0.01

0.09

1.1 ± 3.6

  1. aSD = Standard deviation.
  2. bSE = Standard error.
  3. cDelta% = calculated as the percent difference from either propane stoichiometry or subject.
  4. dREE = Resting energy expenditure.
  5. eVO2 = Ventilation rate of oxygen.
  6. fVCO2 = Ventilation rate of carbon dioxide.
  7. gRQ = Respiratory quotient.
  8. hData from a previous study (3). 60-min data and that derived from combustion or recalculated from 30-min, respectively.
  9. iMREE = Calculated utilizing the Mifflin (12) equation [kcal = ((9.99 × body weight, kg) + (6.25 × height, cm)ā€‰āˆ’ā€‰(4.92 × age, years) + (166 * sex, males = 1, females = 0)ā€‰āˆ’161)]. MREE (MJ) = ((kcal/1000) * 4.18).