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Table 2 Association of physical activity intensity with global cognition, episodic memory, and mental intactness at baseline

From: High-intensity physical activity is not associated with better cognition in the elder: evidence from the China Health and Retirement Longitudinal Study

  Model 1 Model 2
β 95% CI P value β 95% CI P value
Global cognition
 Physical activity (ref: none)
  Mild 0.575 0.197–0.953 0.003 0.421 0.073–0.768 0.018
  Moderate 0.631 0.265–0.998 < 0.001 0.59 0.255–0.926 < 0.001
  Vigorous − 0.124 − 0.490–0.242 0.506 0.133 − 0.209–0.474 0.447
Episodic memory
 Physical activity (ref: none)
  Mild 0.268 0.091–0.445 0.003 0.204 0.033–0.375 0.020
  Moderate 0.259 0.088–0.431 0.003 0.248 0.082–0.413 0.003
  Vigorous − 0.018 − 0.190–0.153 0.835 0.128 − 0.040–0.297 0.135
Mental intactness
 Physical activity (ref: none)
  Mild 0.307 0.023–0.592 0.034 0.217 − 0.050–0.483 0.111
  Moderate 0.372 0.096–0.648 0.008 0.343 0.085–0.601 0.009
  Vigorous − 0.106 − 0.381–0.169 0.451 0.004 − 0.258–0.266 0.975
  1. Model 1: adjusted for age (n = 4 039)
  2. Model 2: adjusted for age, sex, BMI, education level, marital status, residence location, health conditions, smoking, current drinking, and CES-D score (n = 2 524)