Table 1.

Baseline Characteristics According to Leisure-Time Activity and Exercise Intensity Among 5,446 Older Adults

	Quintiles of Leisure-Time Activity, kcal/wk					Categories of Exercise Intensity
	I <35	II 35–404	III 405–885	IV 890–1838	V >1840	None	Low	Medium	High
	(n=1,098)	(n=1,081)	(n=1,092)	(n=1,090)	(n=1,085)	(n=477)	(n=2,587)	(n=1,877)	(n=505)
Age, years	74±6	73±6	72±5	73±5	72±5	75±6	73±6	72±5	71±5
Gender, % male	25	33	41	49	62	35	39	46	46
Race, % white	75	78	85	87	91	76	83	83	91
Education ≥ high school, %	61	67	70	75	79	63	62	79	88
Current smoking, %	14	14	13	10	10	12	14	10	9
Smoking history, pack-years	18±28	16±25	17±27	18±28	20±27	20±31	18±26	17±27	17±24
Coronary heart disease, %	22	17	18	20	18	26	19	19	15
Chronic pulmonary disease, % ^*	27	26	25	23	21	29	24	23	24
Diabetes mellitus, %	21	15	14	14	14	22	16	15	9
Treated hypertension, %	55	48	46	44	39	58	49	43	34
Body-mass-index, kg/m²	28±6	27±5	27±5	26±4	26±4	27±5	27±5	27±5	26±4
Systolic blood pressure, mm Hg	139±22	138±22	136±21	135±21	135±21	140±24	137±21	136±22	134±22
Heart rate, bpm	70+11	69+11	68+11	67+11	66+11	70+12	68+11	67+11	65+10
LDL cholesterol, mg/dl	134±38	130±36	130±35	130±35	128±34	135±40	130±36	130±34	129±34
HDL cholesterol, mg/dl	55±15	55±16	54±16	54±15	53±15	53±16	54±16	54±15	56±16
Triglycerides, mg/dl	145±85	141±66	141±80	135±75	137±76	150±97	140±72	139±78	136±71
C-reactive protein, mg/dl	4.5±6.3	3.7±6.2	3.4±5.1	3.4±6.9	3.1±6.1	4.5±6.1	3.7±6.5	3.4±5.9	2.8±5.4
Beta-blocker use, %	13	13	12	11	12	15	13	12	10
Alcohol use ≥ 1/wk, %	21	26	31	32	43	22	25	36	44

Values are mean±SD (continuous variables) or percent (categorical variables). P for trend<0.05 for all covariates, except for nonsignificant associations between leisure-time activity and preexisting CHD and beta-blocker use; and between exercise intensity and pulmonary disease.

Physician-diagnosed asthma, emphysema, or chronic bronchitis.