The effects of exercise interventions on sedentary behaviour in women - Intermittent versus continuous walking: Effects on physiological and psychological variables in sedentary employees during a 10-week intervention
ISPAH ePoster Library. Rodriquez-Hernandez M. Oct 15, 2018; 225192; 212
Dr. Mynor Rodriquez-Hernandez
Dr. Mynor Rodriquez-Hernandez
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Abstract
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Abstract Introduction:<\b>
This study evaluated the effects of two different walking programs on psychological (self-regulation and self-efficacy) and physiological (Body composition, HbA1c, VO2, MVPA, sedentary behavior) outcomes. Methods:<\b>
Fifty-one female sedentary employees were randomly assigned to one of three groups: intermittent walking (Age=46±9 years, BMI=30.33±5.79 kg/m2), continuous walking (Age=48±9 years, BMI=30.53±6.17 kg/m2) or control group (Age=42±10 years, BMI=27.66±5.11 kg/m2). Experimental groups were time and intensity matched and walking behavior was completed independently. Self-regulation and self-efficacy questionnaires, MVPA, sedentary behavior, and VO2 were obtained at baseline, week 6, and week 11. HbA1c and body composition were obtained at baseline and week 11. Daily walking was measured via a wrist worn accelerometer. Results:<\b>
The continuous group significantly improved in self-regulation from pre-test to week 6 and week 11 (p<0.05); increased MVPA from pre-test to week 6 (p=0.009); increased daily steps from pre-test to week 6 (p=0.033), had a significant higher percentage of change in MVPA compared to the control group (p<0.05) and significantly reduced HbA1c (p<0.05). Intermittent walking group increased lean mass significantly (p<0.001). Fat mass, body weight, and fat percentage decreased significantly for all three groups (p<0.05). No changes in VO2 or sedentary behavior (p>0.05) were observed. Self-efficacy decreased significantly from pre-test to week 6 (p=0.047) and to week 11 (p=0.008) for all groups. Conclusions: Continuous walking activity seems to be a better approach to improve self-regulatory skills, physical activity and HbA1c and may provide a more feasible approach to prescribe exercise in sedentary office employees.
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