Table 3: Change over time in psychosocial and physiological profiles in sedentary, overweight postmenopausal women with RLS ( yoga, 10 controls).

YogaEducational film (Control)Between-group difference over time
PrePost PrePost Effect size¥

( )( )( )( )
Sleep quality, stress, and mood
 Pittsburgh Sleep Quality Index (PSQI)
  Global 0.001 NS0.012.59
  Sleep latency NS NSNS0.25
  Sleep quality NS 0.04NS0.11
  Sleep duration 0.02 .34NS0.041.18
  Sleep efficiency 0.01 0.080.030.70
  Sleep disturbance 0.03 NS0.071.44
  Sleep medication NS NSNS−0.33
  Daytime dysfunction 0.002 NS0.012.64
 Average sleep duration in hours 0.001 NS0.0001−1.35
 Prevalence of insomnia (PSQI > 5) (%)87.50%12.50%0.01100.00%70.00%NS0.03
 Perceived Stress Scale 0.006 NS0.031.98
 Profile of Mood States
 Total 0.02 NS0.022.35
  Tension/Anxiety 0.07 NS0.051.78
  Confusion NS NS0.092.84
  Depression 0.001 NS0.064.97
  Anger/Hostility 0.02 0.060.062.93
  Vigor 0.015 NS0.02−2.63
  Fatigue 0.08 NS0.051.26
 State-Trait Anxiety Inventory
  State 0.05 0.050.0021.87
  Trait NS NSNS0.43
 Duke Social Support Index
  Social Interaction NS NSNSNA
  Social Support NS NSNSNA
Heart rate and blood pressure
 Average heart rate (supine) NS NSNS0.09
 Systolic blood pressure 0.04 NS0.051.25
 Diastolic blood pressure 0.02 NS0.030.89
Anthropometrics
 Waist (cm) NS NSNS0.25
 Weight (kg) NS NSNS0.15
 Body mass index (kg/m2) NS NSNS0.11

¥Between-group effect size (Cohen’s d), adjusted for differences in baseline values, NS: Non-significant ( ).