Physical Activity, Physical Performance, and Biological Markers of Health among Sedentary Older Latinos

Table 3

Cross-sectional unadjusted and adjusted linear regression models of physical performance as a function of physical activity measures among participants (𝑛=120).

Yale physical activity indices§ and seven-day average pedometer step count	Physical performance‡
	Gait speed	Chair stands	Balance test	Total score
	𝛽-coef	𝛽-coef	𝛽-coef	𝛽-coef
Total time index (hours·week^−1)
Unadjusted	.𝟎𝟑𝟒^†	.024	.008	.𝟎𝟔𝟓^∗
Model 1	.𝟎𝟑𝟓^†	.019	.009	.𝟎𝟔𝟒^∗
Model 2	.𝟎𝟐𝟔^∗	.010	.005	.040
Activity summary index (total units * 100)
Unadjusted	.100	.953	.536	1.67
Model 1	.028	.982	.531	1.54
Model 2	.311	.726	.393	.828
Energy expenditure index (kcal·week^−1 [100])
Unadjusted	.𝟎𝟏𝟓^†	.𝟎𝟏𝟏^∗	.004	.𝟎𝟑𝟎^†
Model 1	.𝟎𝟏𝟓^†	.010	.004	.𝟎𝟐𝟗^∗
Model 2	.𝟎𝟏𝟎^∗	.005	.002	.017
Pedometer step count (average/week * 100)
Unadjusted	.010	.012	.𝟎𝟏𝟎^∗	.𝟎𝟑𝟎^∗
Model 1	.010	.010	.𝟎𝟏𝟎^∗	.𝟐𝟗𝟖^∗
Model 2	.004	.006	.008	.018

^∗𝑃 value < 0.05.
^†𝑃 value < 0.01.
‡Short physical performance NIA battery.
§Measured with Yale physical activity survey.
Notes. (1) Model 1 controlled for age and gender. (2) Model 2 controlled for Model 1 covariates, tobacco use, Charlson comorbidity index, and disability.