The effect of a pedometer-based community walking intervention "Walking for Wellbeing in the West" on physical activity levels and health outcomes: a 12-week randomized controlled trial

Abstract

Correction Since publication of our article[1] we have found some imputation errors in the main text and Table Four (Table 1) and Table Five (Table 2) corresponding to the 12-week results. The corrections are as follows: Table 1 Descriptive statistics for age, pedometer step-counts and health related outcomes at baseline and week 12 for intervention and control group. Intervention Group (n = 39) Control Group (n = 40) Baseline Week 12 Baseline Week 12 Age (years) 47.3 (9.3) a 51.2 (7.9) a Steps/day 6802 (3212) 9977 (4669) 6924 (3201) 7078 (2911) PANAS positive 31.2 (6.7) 33.5 (7.4) 31.7 (6.9) 31.3 (7.6) PANAS negative 20.1 (7.2) 19.1 (6.9) 20.2 (8.1) 18.8 (7.5) EQ-5D tariff 0.88 (0.12) 0.89 (0.11) 0.87 (0.12) 0.89 (0.12) EQ VAS 65.4 (18.3) 69.5 (17.8) 69.8 (19.7) 70.7 (18.6) Height (m)b 1.66 (0.08) a 1.64 (0.08) a Body Mass (kg)b 78.9 (15.6) 79.1 (15.2) 79.5 (18.1) 79.5 (17.8) BMI (kg/m2)b 28.5 (4.8) 28.6 (4.8) 29.4 (6.3) 29.5 (6.2) Waist circumference (cm)b 89.5 (12.6) 89.8 (12.7) 90.4 (14.6) 90.9 (15.6) Hip circumference (cm)b 108.9 (8.8) 108.5 (9.7) 110.1 (12.4) 110.2 (11.8) Waist:Hip Ratiob 0.82 (0.08) 0.83 (0.08) 0.82 (0.09) 0.82 (0.09) % body fatb 30.7 (4.4) 31.2 (4.9) 31.8 (5.6) 32.5 (6.3) Systolic blood pressure (mm Hg)b 118.2 (17.9) 119.2 (17.0) 119.9 (15.9) 121.4 (15.1) Diastolic blood pressure (mm Hg)b 75.1 (11.4) 76.3 (12.2) 75.5 (11.8) 78.2 (11.8) Heart Rate (beats.min-1)c 68.6 (7.2) 69.5 (8.3) 67.9 (8.6) 68.9 (9.0) Total Cholesterol (mmol.l-1)c 5.4 (1.3) 5.4 (1.2) 5.5 (1.1) 5.5 (1.0) HDL (mmol-1)c 1.3 (0.3) 1.3 (0.3) 1.4 (0.4) 1.4 (0.4) Chol:HDL Ratioc 4.2 (1.1) 4.2 (1.1) 4.1 (1.2) 4.1 (1.3) Values are mean (M) and standard deviation (SD). a not measured at week 12 b anthropometric measures: (n = 37) for intervention group, (n = 39) for control group c blood measures: (n = 32) for intervention group, (n = 34) for control group Note: there were no significant differences between the intervention and control group for any variable at baseline Table 2 Descriptive statistics for IPAQ variables at baseline and week 12. Intervention Group (n = 39) Control Group (n = 40) Baseline Week 12 Baseline Week 12 Work-related PA Vigorous PA 0 (1080) 0 (1800) 0 (720) 0 (540) Moderate PA 0 (1500) 0 (900) 0 (1500) 0 (600) Walking 0 (1620) 0 (2520) 0 (1350) 0 (1650) Total 0 (3000) 30 (4680) 0 (2550) 0 (2730) Transportation PA Bicycling 0 (0) 0 (0) 0 (40) 0 (40) Walking 105 (1680) 140 (900) 80 (1680) 70 (1680) Total 105 (1680) 140 (900) 80 (1720) 70 (1720) Housework PA Vigorous outside home 0 (840) 0 (840) 0 (750) 0 (360) Moderate outside home 0 (2100) 0 (1680) 0 (1260) 0 (840) Moderate inside home 210 (2100) 150 (840) 180 (1680) 120 (1680) Total 360 (4200) 300 (2520) 255 (2640) 202.5 (2520) Leisure-time PA Walking 40 (840) 100 (840) 35 (600) 16.25 (840) Vigorous PA 0 (180) 0 (120) 0 (120) 0 (600) Moderate PA 0 (360) 0 (60) 0 (180) 0 (180) Total 60 (840) 120 (840) 60 (600) 60 (840) Combined Domains Total Walking 225 (3360) 290 (2850) 167.5 (1740) 155 (1925) Total Moderate PA 420 (4380) 405 (2760) 360 (2640) 262.5 (2590) Total Vigorous PA 0 (1080) 0 (1800) 0 (720) 0 (600) Total PA 690 (6300) 840 (5415) 640 (4300) 577.5 (4270) Time Spent Sitting Weekday 1500 (3750) 1200 (3900) 1500 (3450) 1500 (2850) Weekend 480 (1320) 360 (1200) 600 (1200) 600 (1320) Total 1980 (4650) 1680 (5100) 2130 (4170) 2100 (3630) Values are median (Mdn) and range (r). In the results section of the manuscript the median differences presented in the text for the Wilcoxon's signed-rank tests in the intervention group should be, 1. Leisure minutes walked: "60" not "100" 2. Weekday sitting: "- 300" not "1200" 3. Weekend sitting: "- 120" not "360" 4. Total sitting: "- 300" not "1680" In the results section of the manuscript the median difference presented for the Mann Whitney U test at week 12 between groups should be, 1. Total minutes walked: "135" not "57.5" As a consequence of the amendment to the median leisure minutes walked in the intervention group the following sentence from the discussion should be corrected as follows: Original Sentence "The increase observed in the step-count data was supported by the self-reported results of the IPAQ; a significant increase in reported minutes of leisure time walking was found in the intervention group (median increase of 100 minutes per/week)." Amended Sentence "The increase observed in the step-count data was supported by the self-reported results of the IPAQ; a significant increase in reported minutes of leisure time walking was found in the intervention group (median increase of 60 minutes per/week)."