Research Article

Effects of a 12-Week Hatha Yoga Intervention on Cardiorespiratory Endurance, Muscular Strength and Endurance, and Flexibility in Hong Kong Chinese Adults: A Controlled Clinical Trial

Table 3

Comparison of changes of outcome variables among participants in the yoga group and the control group, by gender.

Outcome variablesYoga ControlANOVAANCOVA
PrePostPost-PrePrePostPost-PreEffect sizeAdjustedEffect size
M ± SDM ± SDpartial partial

Menn = 34n = 30
 Resting heart rate, bpm67.53 ± 9.3166.32 ± 9.79−1.21 ± 6.0766.77 ± 9.1068.73 ± 9.771.97 ± 8.410.0860.047//
 VO2max, mL/kg/min32.99 ± 6.7735.59 ± 6.632.61 ± 2.5632.95 ± 6.7633.66 ± 6.180.72 ± 2.840.0070.113//
 Curl-ups, times20.18 ± 6.4222.59 ± 5.282.41 ± 4.4022.47 ± 4.0023.13 ± 3.180.67 ± 2.170.0460.059//
 Push-ups, times9.50 ± 9.5013.12 ± 10.263.62 ± 3.076.67 ± 5.937.27 ± 6.210.60 ± 2.27<0.0010.239//
 MBS left leg, cm39.99 ± 11.4746.09 ± 11.206.10 ± 5.1149.28 ± 13.3649.00 ± 13.46−0.28 ± 3.29<0.0010.356//
 MBS right leg, cm39.66 ± 11.8046.06 ± 11.226.40 ± 5.0449.56 ± 14.0049.22 ± 13.47−0.34 ± 4.00<0.0010.357//

Womenn = 53n = 56
 Resting heart rate, bpm69.11 ± 9.0666.81 ± 7.17−2.30 ± 6.9070.61 ± 9.9771.39 ± 11.070.79 ± 7.000.0220.048//
 VO2max, mL/kg/min26.35 ± 5.5127.68 ± 5.251.33 ± 2.6524.69 ± 4.3724.27 ± 4.79−0.42 ± 2.660.0010.1000.0020.087
 Curl-ups, times21.04 ± 5.4323.92 ± 3.272.89 ± 4.5119.38 ± 4.8620.04 ± 5.460.66 ± 4.660.0130.057//
 Push-ups, times1.87 ± 4.305.28 ± 5.623.42 ± 2.561.82 ± 3.371.82 ± 2.980.00 ± 1.85<0.0010.375//
 MBS left leg, cm52.46 ± 8.4458.66 ± 7.496.20 ± 4.1951.28 ± 10.6650.82 ± 10.96−0.46 ± 4.07<0.0010.397//
 MBS right leg, cm52.41 ± 8.3158.95 ± 7.406.55 ± 4.2250.89 ± 11.2150.87 ± 11.71−0.03 ± 4.36<0.0010.374//

Pre: baseline; Post: postintervention; Post-Pre: change from baseline to postintervention; : eta-squared; VO2max: maximal oxygen uptake; MBS: the modified back-saver sit-and-reach test.
The effect size in ANOVA/ANCOVA is represented by value of partial eta-squared () as very small (<0.01), small (0.01–0.05), medium (0.06–0.13), and large (≥0.14).
Adjusted for BMI at baseline and HRQoL role emotional domain at baseline.