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[Show abstract][Hide abstract] ABSTRACT: Inactivity is a leading contributor to chronic health problems. Here, we examined the effects of a pedometer-based physical activity intervention (Prince Edward Island-First Step Program, PEI-FSP) on activity and specific health indices in 106 sedentary workers.
Participants were recruited from five workplaces where most jobs were moderately-highly sedentary. Using subjects as their own control, physical activity (pedometer-determined steps per day) was compared before and after a 12-week intervention. Changes in body mass index (BMI), waist girth, resting heart rate, and blood pressure were evaluated.
The PEI-FSP was completed by 59% of participants. Steps per day increased from 7,029 +/- 3,100 (SD) at baseline to a plateau of 10,480 +/- 3,224 steps/day by 3.96 +/- 3.28 weeks of the intervention. The amount that participants were able to increase their steps per day was not related to their baseline BMI. On average, participants experienced significant decreases in BMI, waist girth, and resting heart rate. Reductions in waist girth and heart rate were significantly related to the increase in steps per day. In contrast, reductions in BMI were predicted by the initial steps per day.
The PEI-FSP increased physical activity in a sedentary population. Importantly, those with a higher BMI at baseline achieved relatively similar increases in their physical activity as participants with a lower BMI.
Preventive Medicine 12/2004; 39(6):1215-22. DOI:10.1016/j.ypmed.2004.04.053 · 3.09 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: To evaluate whether participation in a four-month, pedometer-based, physical activity, workplace health programme results in an improvement in risk factors for diabetes and cardiovascular disease.
Adults employed within Australia in primarily sedentary occupations and voluntarily enrolled in a workplace programme, the Global Corporate Challenge®, aimed at increasing physical activity were recruited. Data included demographic, behavioural, anthropometric and biomedical measurements. Measures were compared between baseline and four-months.
762 participants were recruited in April/May 2008 with 79% returning. Improvements between baseline and four-months amongst programme participants were observed for physical activity (an increase of 6.5% in the proportion meeting guidelines, OR(95%CI): 1.7(1.1, 2.5)), fruit intake (4%, OR: 1.7(1.0, 3.0)), vegetable intake (2%, OR: 1.3(1.0, 1.8)), sitting time (-0.6(-0.9, -0.3) hours/day), blood pressure (systolic: -1.8(-3.1, -.05) mmHg; diastolic: -1.8(-2.4, -1.3) mmHg) and waist circumference (-1.6(-2.4, -0.7) cm). In contrast, an increase was found for fasting total cholesterol (0.3(0.1, 0.4) mmol/L) and triglycerides (0.1(0.0, 0.1) mmol/L).
Completion of this four-month, pedometer-based, physical activity, workplace programme was associated with improvements in behavioural and anthropometric risk factors for diabetes and cardiovascular disease. Long-term evaluation is required to evaluate the potential of such programmes to prevent the onset of chronic disease.
Preventive Medicine 06/2011; 53(3):162-71. DOI:10.1016/j.ypmed.2011.06.005 · 3.09 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: This uncontrolled pilot study assessed changes in pedometer-measured step counts and self-reported physical activity during a 3-week mobile phone-based intervention. We also explored whether age, BMI, and psychosocial factors were associated with changes in step counts.
Forty-one sedentary adult women in San Francisco, California were asked to report their pedometer steps using a study-supplied mobile phone from June to September 2008. In the second and third weeks, daily prompts delivered by the mobile phone encouraged participants to increase steps by 20% from the previous week.
Mean age was 48 years. Average daily total steps increased by approximately 800 or 15% over three weeks (p<0.001). Lower BMI, no antidepressant use, and lower self-reported health status were associated with higher step counts at baseline. Improvements in self-reported will-power were associated with increases in step counts (p<0.001). Neither age (p=0.55) nor BMI (p=0.13) was significantly associated with changes in activity over the 3 weeks.
The intervention appeared to motivate sedentary women to increase their physical activity. A randomized controlled clinical trial is warranted and feasible.
Preventive Medicine 09/2010; 51(3-4):287-9. DOI:10.1016/j.ypmed.2010.06.006 · 3.09 Impact Factor
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