Table 4.

Cognitive performance assessment scores by moderate-intensity physical activity category (n = 2,377). Mean ± SD

	MPA
	No activity (n = 846)	<1 h (n =142)	1–3 h (n = 448)	3–6 h (n = 366)	6–9 h (n = 165)	9–12 h (n =118)	12 + h (n = 292)
Age (y)	70.02 ± 6.90	70.01 ± 6.74	69.29 ± 6.69	69.27 ± 6.90	68.84 ± 6.21	67.99 ± 6.10	67.72 ± 6.27
CERAD.IR	18.78 ± 4.72	18.92 ± 5.03	19.49 ± 4.50	19.31 ± 4.30	19.55 ± 3.82	19.27 ± 4.09	19.39 ± 4.46
CERAD.DR	5.82 ± 2.36	6.16 ± 2.21	6.23 ± 2.22	6.10 ± 2.25	6.38 ± 1.93	6.08 ± 2.32	6.16 ± 2.13
AFT	15.91 ± 5.35	16.61 ± 5.23	17.43 ± 5.45	17.47 ± 5.38	17.30 ± 5.59	17.20 ± 5.64	18.44 ± 5.45
DSS	43.89 ± 16.94	48.91 ± 16.38	49.16 ± 17.03	49.35 ± 16.37	48.62 ± 18.12	49.24 ± 16.00	47.90 ± 16.40

CERAD.IR, immediate recall memory test; CERAD.DR, delayed recall memory test; AFT, animal fluency test; DSS, digit symbol substitution test.