Reliability And Validity Of Hand

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Reliability and Validity of Hand-held Bio-Impedance in Detecting Body Fat Loss Dan Dychtwald Introduction Problem: Body fat measurements are traditionally used during weight loss interventions to ensure individuals are losing body fat and not muscle. While tests such as dual energy X-ray absorptiometry (DXA) and hydrostatic immersion are the gold standard for measuring body fat, both are expensive and have limited accessibility.1 Additionally, devices such as calipers may be obtrusive and ineffective for some, especially those morbidly obese. Bioelectrical impedance (BIA) has also been used in weight loss settings, but some devices are expensive and require multiple points of contact with the individual. However, a hand-held option is also available that is inexpensive, easy to use, and much less invasive. Purpose of the Study: To determine the inter-rater reliability and validity (via sensitivity) of a hand-held bio-impendence (Omron HBF306C) device in measuring body fat among a group of overweight individuals (BMI > 25 kg/m2)2 enrolled in a weight loss program. Research Questions/Hypotheses: The handheld BIA device used in this study is hypothesized to have: 1. An inter-rater reliability/reproducibility ICC close to other forms of body fat measurement used in the field of dietetics (.93-.99)3 2. To reliably measure body fat and detect body fat losses in conjunction with weight loss Study Design: The inter-rater reliability of a hand-held BIA device is being investigated
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