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Table 2 Physical characteristics, smoking history and experimental results on 8 smokers

From: Effect of ramp bicycle exercise on exhaled carbon monoxide in humans

Subjects Age (years) Height (cm) Weight (kg) No. of Cig./day Smoking years (years) Ex-duration (min′sec″) \( \dot{V}_{\text{CO}} ( 0{\kern 1pt} {\text{W}}) \) (μl/min) Peak \( \dot{V}_{\text{CO}} \) (μl/min) Correlation (r) \( ({\text{T}}\dot{V}_{{{\text{O}}_{ 2} }} - {\text{T}}\dot{V}_{\text{CO}} ) \) Correlation (r) \( ({\text{T}}\dot{V}_{\text{E}} - {\text{T}}\dot{V}_{\text{CO}} ) \) Slope Coeff. \( ({\text{E}}\dot{V}_{{{\text{O}}_{ 2} }} - {\text{E}}\dot{V}_{\text{CO}} ) \) Slope Coeff. \( ( {\text{E}}\dot{V}_{\text{E}} - {\text{E}}\dot{V}_{\text{CO}} ) \)
S1-1 21 180 59 20 6 12′00″ 76.7 227.6 0.93 0.96 0.091 1.909
S1-2    (11′00″) (116.1) (353.0) (0.95) (0.96) (0.180) (4.526)
S2-1 20 171 72 15 5 9′30″ 59.4 134.8 0.86 0.96 0.062 2.379
S2-2    (10′00″) (191.2) (313.4) (0.81) (0.93) (0.095) (4.602)
S3 21 169 60 15 7 11′30″ 12.5 37.1 0.88 0.93 0.016 0.300
S4 21 173 62 5 1 11′00″ 22.9 70.8 0.96 0.98 0.036 1.212
S5 22 176 80 20 7 12′30″ 159.8 298.1 0.93 0.94 0.072 3.137
S6 19 175 65 10 6 9′30″ 57.8 131.0 0.97 0.97 0.063 2.376
S7 20 182 60 20 1 13′30″ 99.9 153.2 0.73 0.90 0.023 1.234
S8 20 175 61 30 7 9′00″ 153.2 262.8 0.87 0.93 0.095 5.375
Mean (±SD) 20.5 (0.5) 175.1 (4.3) 64.9 (7.4) 17 (7.5) 5 (2.6) 11′04″ (1′36″) 80.3 (54.6) 164.4 (91.5) 0.89 (0.08) 0.94 (0.03) 0.057 (0.030) 2.240 (1.541)
G-Diff. p < 0.05 N.S. N.S.    p < 0.05 p < 0.01 p < 0.01 N.S. N.S. p < 0.01 p < 0.01
  1. “No. of Cig.” and “Smoking years” mean the average number of cigarettes smoked per day and the length of habitual smoking in each subject. Other parameters are the same as in Table 1. Two subjects (S-1 and S-2) repeated the same measurement on different days, and the second data (-2) were shown below the first measurement (-1). The second data were excluded from the data calculation. G-Diff” indicates the statistical significance of the difference in the group mean values between smokers and non-smokers