Table 2.

Incidence rates and hazard ratios (95% confidence intervals) of overweight/obesity according to level of physical activity

Amount of Weekly Physical Activity		Cases	Crude Incidence Rate (cases/10,000 person years)	Age-adjusted	Multivariable Model§	Multivariable Model + BMI*
Moderate Physical Activity
None		489	530.4	1.0	1.0	1.0
<1000 kilocalories		5108	457.3	0.88 (0.80–0.96)	0.89 (0.81–0.98)	0.92 (0.84–1.01)
1000–2000 kilocalories		1259	474.8	0.91 (0.82–1.01)	0.94 (0.84–1.05)	0.88 (0.79–0.99)
>2000 kilocalories		287	514.3	0.97 (0.84–1.13)	1.03 (0.88–1.19)	0.93 (0.80–1.09)
p for trend				0.2	0.07	0.3
Vigorous Physical Activity
None		4216	498.9	1.0	1.0	1.0
<1000 kilocalories		2709	453.9	0.92 (0.87–0.96)	0.94 (0.90–0.99)	0.99 (0.94–1.04)
1000–2000 kilocalories		554	457.9	0.92 (0.84–1.00)	0.94 (0.86–1.02)	0.97 (0.88–1.06)
>2000 kilocalories		346	382.1	0.77 (0.69–0.86)	0.79 (0.71–0.89)	0.95 (0.85–1.07)
p for trend				<0.0001	<0.0001	0.3
Total Physical Activity
<500 kilocalories		3492	507.4	1.0	1.0	1.0
500–1000 kilocalories		1578	441.3	0.88 (0.83–0.94)	0.92 (0.86–0.98)	0.91 (0.85–0.97)
1000–2000 kilocalories		1777	462.2	0.92 (0.87–0.98)	0.95 (0.90–1.01)	0.93 (0.88–0.99)
2000–3000 kilocalories		567	426.7	0.85 (0.78–0.93)	0.89 (0.81–0.98)	0.89 (0.81–0.97)
>3000 kilocalories		451	431.1	0.85 (0.77–0.94)	0.87 (0.78–0.96)	0.92 (0.83–1.02)
p for trend				<0.0001	0.002	0.02

^§Multivariable Model adjusted for age, alcohol, smoking, hormone replacement therapy, postmenopausal status, randomization arm, total caloric intake and dietary factors (saturated fat, low-fat dairy, high-fat dairy, red meat, poultry, whole grain, and fiber intake)

^*Baseline BMI