Brazilian Cardiorespiratory Fitness Classification Based on Maximum Oxygen Consumption

Herdy, Artur Haddad; Caixeta, Ananda

doi:10.5935/abc.20160070

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Original Articles, Cardiopulmonary Exercise Testing • Arq. Bras. Cardiol. 106 (5) • May 2016 • https://doi.org/10.5935/abc.20160070 copy

Brazilian Cardiorespiratory Fitness Classification Based on Maximum Oxygen Consumption

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

Background:

Cardiopulmonary exercise test (CPET) is the most complete tool available to assess functional aerobic capacity (FAC). Maximum oxygen consumption (VO₂ max), an important biomarker, reflects the real FAC.

Objective:

To develop a cardiorespiratory fitness (CRF) classification based on VO₂ max in a Brazilian sample of healthy and physically active individuals of both sexes.

Methods:

We selected 2837 CEPT from 2837 individuals aged 15 to 74 years, distributed as follows: G1 (15 to 24); G2 (25 to 34); G3 (35 to 44); G4 (45 to 54); G5 (55 to 64) and G6 (65 to 74). Good CRF was the mean VO₂ max obtained for each group, generating the following subclassification: Very Low (VL): VO₂ < 50% of the mean; Low (L): 50% - 80%; Fair (F): 80% - 95%; Good (G): 95% -105%; Excellent (E) > 105%.

Results:

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Men VL < 50% L 50-80% F 80-95% G 95-105% E > 105% G1 < 25.30 25.30-40.48 40.49-48.07 48.08-53.13 > 53.13 G2 < 23.70 23.70-37.92 37.93-45.03 45.04-49.77 > 49.77 G3 < 22.70 22.70-36.32 36.33-43.13 43.14-47.67 > 47.67 G4 < 20.25 20.25-32.40 32.41-38.47 38.48-42.52 > 42.52 G5 < 17.54 17.65-28.24 28.25-33.53 33.54-37.06 > 37.06 G6 < 15 15.00-24.00 24.01-28.50 28.51-31.50 > 31.50 Women G1 < 19.45 19.45-31.12 31.13-36.95 36.96-40.84 > 40.85 G2 < 19.05 19.05-30.48 30.49-36.19 36.20-40.00 > 40.01 G3 < 17.45 17.45-27.92 27.93-33.15 33.16-34.08 > 34.09 G4 < 15.55 15.55-24.88 24.89-29.54 29.55-32.65 > 32.66 G5 < 14.30 14.30-22.88 22.89-27.17 27.18-30.03 > 30.04 G6 < 12.55 12.55-20.08 20.09-23.84 23.85-26.35 > 26.36

Conclusions:

This chart stratifies VO₂ max measured on a treadmill in a robust Brazilian sample and can be used as an alternative for the real functional evaluation of physically and healthy individuals stratified by age and sex.

Keywords
Respiratory Function Tests; Exercise; Exercise Test; Oxygen Consumption

Men	VL < 50%	L 50-80%	F 80-95%	G 95-105%	E > 105%
G1	< 25.30	25.30-40.48	40.49-48.07	48.08-53.13	> 53.13
G2	< 23.70	23.70-37.92	37.93-45.03	45.04-49.77	> 49.77
G3	< 22.70	22.70-36.32	36.33-43.13	43.14-47.67	> 47.67
G4	< 20.25	20.25-32.40	32.41-38.47	38.48-42.52	> 42.52
G5	< 17.54	17.65-28.24	28.25-33.53	33.54-37.06	> 37.06
G6	< 15	15.00-24.00	24.01-28.50	28.51-31.50	> 31.50
Women
G1	< 19.45	19.45-31.12	31.13-36.95	36.96-40.84	> 40.85
G2	< 19.05	19.05-30.48	30.49-36.19	36.20-40.00	> 40.01
G3	< 17.45	17.45-27.92	27.93-33.15	33.16-34.08	> 34.09
G4	< 15.55	15.55-24.88	24.89-29.54	29.55-32.65	> 32.66
G5	< 14.30	14.30-22.88	22.89-27.17	27.18-30.03	> 30.04
G6	< 12.55	12.55-20.08	20.09-23.84	23.85-26.35	> 26.36

Men	Very Low	Low	Fair	Good	Excellent
Age group
20-29	< 25	25-33	34-42	43-52	≥ 53
30-39	< 23	23-30	31-38	39-48	≥ 49
40-49	< 20	20-26	27-35	36-44	≥ 45
50-59	< 18	18-24	25-33	34-42	≥ 43
60-69	< 16	16-22	23-30	31-40	≥ 41
Women	Very Low	Low	Fair	Good	Excellent
Age group
20-29	< 24	24-30	31-37	38-48	≥ 49
30-39	< 20	20-27	28-33	34-44	≥ 45
40-49	< 17	17-23	24-30	31-41	≥ 42
50-59	< 15	15-20	21-27	28-37	≥ 38
60-69	< 13	13-17	18-23	24-34	≥ 35

Active men
Age (years)	15 – 24	25 – 34	35 – 44	45 – 54	55 – 64	65 – 74
n = 1818	343	597	427	285	134	32
Mean VO₂ max (mL/kg.min)	50.6 ± 7.3	47.4 ± 7.4	45.4 ± 6.8	40.5 ± 6.5	35.3 ± 6.2	30 ± 6.1
Sedentary men
Age (years)	15 – 24	25 – 34	35 – 44	45 – 54	55 – 64	65 – 74
n = 570	85	188	157	100	30	10
Mean VO₂ max (mL/kg.min)	47.4 ± 7.9	41.9 ± 7.2	39.9 ± 6.8	35.6 ± 7.7	30 ± 6.3	23.1 ± 6.3

Active women
Age (years)	15 – 24	25 – 34	35 – 44	45 – 54	55 – 64	65 – 74
n = 1019	177	300	229	206	81	26
Mean VO₂ max (mL/kg.min)	38.9 ± 5.7	38.1 ± 6.6	34.9 ± 5.9	31.1 ± 5.4	28.6 ± 6.1	25.1 ± 4.4
Sedentary women
Age (years)	15 – 24	25 – 34	35 – 44	45 – 54	55 – 64	65 – 74
n = 515	85	149	108	108	40	25
Mean VO₂ max (mL/kg.min)	35.6 ± 5.7	34.0 ± 4.8	30.0 ± 5.4	27.2 ± 5.0	23.9 ± 4.2	21.3 ± 3.4

Age group (years)	Very Low	Low	Fair	Good	Excellent
15 – 24	< 25.30	25.30 – 40.48	40.49 – 48.07	48.08 – 53.13	> 53.13
25 – 34	< 23.70	23.70 – 37.92	37.93 – 45.03	45.04 – 49.77	> 49.77
35 – 44	< 22.70	22.70 – 36.32	36.33 – 43.13	43.14 – 47.67	> 47.67
45 – 54	< 20.25	20.25 – 32.40	32.41 – 38.47	38.48 – 42.52	> 42.52
55 – 64	< 17.54	17.65 – 28.24	28.25 – 33.53	33.54 – 37.06	> 37.06
65 – 74	< 15	15.00 – 24.00	24.01 – 28.50	28.51 – 31.50	> 31.50

Age group (years)	Very Low	Low	Fair	Good	Excellent
15 – 24	< 19.45	19.45 – 31.12	31.13 – 36.95	36.96 – 40.84	> 40.85
25 – 34	< 19.05	19.05 – 30.48	30.49 – 36.19	36.20 – 40.00	> 40.01
35 – 44	< 17.45	17.45 – 27.92	27.93 – 33.15	33.16 – 34.08	> 34.09
45 – 54	< 15.55	15.55 – 24.88	24.89 – 29.54	29.55 – 32.65	> 32.66
55 – 64	< 14.30	14.30 - 22.88	22.89 – 27.17	27.18 – 30.03	> 30.04
65 – 74	< 12.55	12.55 – 20.08	20.09 – 23.84	23.85 – 26.35	> 26.36

Men
Age group (years)	Very Low	Low	Fair	Good	Excellent
15 – 24					VO₂ = 47.4
25 – 34					VO₂ = 41.9
35 – 44					VO₂ = 39.9
45 – 54					VO₂ = 35.6
55 – 64					VO₂ = 30.0
65 – 74		VO₂ = 23.2
Women
15 – 24					VO₂ = 35.6
25 – 34					VO₂ = 34.0
35 – 44					VO₂ = 30.0
45 – 54					VO₂ = 27.2
55 – 64					VO₂ = 23.9
65 – 74					VO₂ = 21.2

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