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. Author manuscript; available in PMC: 2023 Jul 1.
Published in final edited form as: Am J Med. 2022 Feb 27;135(7):906–914. doi: 10.1016/j.amjmed.2022.01.048

TABLE 2.

Baseline characteristics by fitness categories in men.

Non-exercise estimated cardiorespiratory fitness tertiles
All T1 (lower) T2 (middle) T3 (upper) Plinear Trend
Characteristic (N=4403) (N=1466) (N=1469) (N=1468)

Age (yr) 42.8 (9.0) 43.1 (9.2) 42.7 (9.1) 42.4 (8.7) 0.11
Body mass index 25.1 (2.7) 27.7 (2.5) 24.9 (1.5) 22.9 (1.4) <0.0001
Waist circumference (cm) 89.9 (8.5) 97.4 (7.4) 89.5 (5.1) 82.9 (5.7) <0.0001
Resting heart rate 56 (9) 62 (9) 56 (8) 51 (7) <0.0001
Total cholesterol (mmol/L) 5.3 (1.2) 5.5 (1.0) 5.3 (1.4) 5.0 (0.9) <0.0001
Triglycerides (mmol/L) 1.3 (0.9) 1.6 (1.2) 1.2 (0.7) 1.0 (0.5) <0.0001
Systolic blood pressure (mmHg) 112 (8) 113 (8) 111 (8) 111 (8) <0.0001
Diastolic blood pressure (mmHg) 72 (5) 73 (4) 72 (5) 71 (5) <0.0001
Fasting blood glucose (mmol/L) 5.4 (0.7) 5.5 (0.7) 5.4 (0.7) 5.3 (0.5) <0.0001
Estimated cardiorespiratory fitness (METs) 13.4 (1.2) 12.2 (0.9) 13.5 (0.5) 14.5 (0.6) <0.0001
Current smoker (%) 14.7 23.9 13.8 6.4 <0.0001
Heavy alcohol drinker* (%) 5.8 6.5 5.9 5.0 0.25
Physically active (%) 84.0 66.4 88.6 97.1 <0.0001
Hypercholesterolemia (%) 14.7 20.4 15.0 8.7 <0.0001
Diabetes mellitus§ (%) 1.6 2.5 1.9 0.5 0.0001
Parental history of hypertension (%) 10.9 12.4 9.9 10.4 0.06

Data are presented as % or mean (SD).

*

Heavy alcohol drinker was defined as drinks per week >14 in male or >7 in female. One drink of alcohol is defined as 12 oz (3.41 dL) of beer, 5 oz (1.421 dL) of wine, or 1.5 oz (0.4262 dL) of hard liquor.

Physically active was defined as have leisure-time physical activity during the past three months.

Hypercholesterolemia was defined as a physician diagnosis or total cholesterol ≥6.2 mmol/L.

§

Diabetes mellitus was defined as a physician diagnosis, insulin use, or fasting glucose ≥7 mmol/L.