Browsing by Author "Spellman, Justin W"
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- ItemIs there a valid app for that? Validity of a free pedometer iPhone application.(2012-06-26) Bergman, Randall J; Spellman, Justin W; Hall, Michael E; Bergman, Shawn MBACKGROUND This study examined the validity of a selected free pedometer application iPedometer IP for the iPhone that could be used to assess physical activity METHODS Twenty college students 10 men 10 women mean age 21 85 1 57 yrs wore an iPhone at 3 locations pocket waist arm and a StepWatch 3 Step Activity Monitor SW on their right ankle while walking on a treadmill at 5 different speeds 54 67 80 94 107 m min 1 A research assistant counted steps with a tally counter TC RESULTS Statistical significance between the TC SW and IP was found during every condition except IP in the pocket at 107 m min 1 F 2 38 64 P 54 Correlations involving the IP revealed only 1 positive correlation IP on arm at 54 m min 1 for any of the conditions r 46 P 05 CONCLUSION The IP application was not accurate in counting steps and recorded significantly lower step counts than the SW and TC Thus the free pedometer application used is not a valid instrument for monitoring activity during treadmill walking