Effects of a short-term staff/ workplace walking intervention on health indicies
University of Wales Institute, Cardiff
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The purpose of this study was to assess the short-term effects of a walking protocol on health indices in sedentary subjects. Ten subjects (9 women 48.8 ±8.1 yr) undertook a walking protocol of 30 min'day -1 , 5 days'week -1 for 4 weeks. Pre-post measures of body composition, blood pressure, lipid profiles and secondary outcomes of resting heart rate, oxygen uptake values and health questionnaire (SF-36) were also measured. Differences in steps'day-1 between walking and non-walking days were measured by pedometers. Significant differences (P <0.001) were found between pedometer steps'day-1 for walking and non-walking days (10,546 ±2407 and 6667 ±3034 steps). None of the primary outcomes showed significant changes (P >0.05), body mass (73.5 ±14.3 kgTo 73.9 ±14.1 kg), body fat percentage (33.9 ±6.5yo to 33.5 ±7.syo), BMI (27 .4 ±4 Io 27 .6 ±4 kg'm2), hip:waist ratio (0.84 ±0.06 both pre-post measures), systolic blood pressure (129 ±18 1o 129 ±17 mmHg), diastolic blood pressure (84 ±10 to 82 ±10 mmHg) total cholesterol (+ 0.09 mmol'L-l) and triglycerides (-0.07 mmol'L-r). Secondary outcomes exhibited no differences, however, positive trends were found in SF-36 variables, oxygen uptake increased by l0% (26.5 ±2.0'r.o 29.2 ±4.8 ml'kg r'min r¡ ple-post measures. The findings suggest walking 30 min'day-1, 5 day'week-l for 4 weeks does not induce significant changes in health variables, although positive trends are evident in primary and secondary variables. The 2 mmHg found in diastolic blood pressure, 5% and 8% increase in resting heart rate and oxygen uptake reduce the risk of coronary heart disease by 5%. These positive reductions were found in a short period of time i.e. 4 weeks or 20 walking sessions. The sample size in the present study could have attributed to the nonsignificant findings, a larger sample size and a greater training duration may elicit different findings.
MSc Sport and Exercise Science
- Masters Degrees (Sport) 
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