Table 3 Association of time-varying heart rate variability measures with change in chair rise time.

From: Autonomic function and change in functional capacity in older adults: a longitudinal investigation

Heart rate variability measures

Model 1

Model 2

Model 3

Model 4

Estimate (95% CI)a

P

Estimate (95% CI)a

P

Estimate (95% CI)a

P

Estimate (95% CI)a

P

SDNN

0.09 (− 0.07 to 0.24)

0.285

0.16 (0.01 to 0.32)

0.035

0.15 (0.00 to 0.31)

0.048

0.16 (0.01 to 0.31)

0.04

SDNN × Time

    

Not included

   

SDNN × Time2

      

Not included

 

LF

0.04 (− 0.11 to 0.20)

0.561

0.12 (− 0.02 to 0.27)

0.101

0.12 (− 0.03 to 0.26)

0.115

0.12 (− 0.03 to 0.27)

0.109

LF × Time

    

Not included

   

LF × Time2

      

Not included

 

HF

0.15 (0.00 to 0.30)

0.043

0.18 (0.03 to 0.32)

0.016

0.18 (0.04 to 0.32)

0.015

0.18 (0.03 to 0.32)

0.016

HF × Time

    

Not included

   

HF × Time2

      

Not included

 

LF/HF ratio

− 0.14 (− 0.29 to 0.00)

0.053

− 0.08 (− 0.22 to 0.06)

0.25

− 0.09 (− 0.23 to 0.05)

0.201

− 0.09 (− 0.23 to 0.06)

0.232

LF/HF ratio × Time

    

Not included

   

LF/HF ratio × Time2

      

Not included

 

TP

0.06 (− 0.10 to 0.22)

0.465

0.12 (− 0.04 to 0.27)

0.149

0.11 (− 0.04 to 0.27)

0.159

0.12 (− 0.04 to 0.27)

0.14

TP × Time

    

Not included

   

TP × Time2

      

Not included

 
  1. The association between the time-varying heart rate variability measure (natural log-transformed and standardized) and the chair rise time was modeled using linear mixed regression. Model 1 included time, time2, and the term for the time-varying heart rate variability measure. Model 2 is adjusted for covariates (age, sex, education, smoking status, leisure-time physical activity, body mass index, chronic diseases (hypertension, diabetes mellitus, cardiovascular disease, stroke, lung disease, cancer, arthritis, chronic kidney disease, and Parkinson’s disease), and resting heart rate). Model 3 is adjusted for Model 2 variables and for the interactions of time-varying heart rate variability measure and baseline covariates with time. Model 4 is adjusted for Model 2 variables and for the interactions of time-varying heart rate variability measure and baseline covariates with time2. Time indicates years (t) since the baseline (t0) examination.
  2. aChange in chair rise time or the rate of change in chair rise time per 1 standard deviation higher time-varying heart rate variability measure.
Back to article page