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...factorial design study conducted by De Jong, et al (2000).
Research question
Physical frailty in the elderly has been defined as a "state of reduced physiologic reserve associated with increased susceptibility to disability" (De Jong, et al, 2000, p. 947). Both inactivity and inadequate diet contribute to skeletal mass, which can result in bone fractures from minimal trauma. The research question for this study is how to successfully intervene to help elderly individuals maintain their skeletal and lean muscle mass and, thereby, reduce frailty.
Hypothesis
Physical frailty in the elderly results from a sedentary lifestyle, which causes lower energy levels, which, in turn, results in a reduction in appetite. This puts elderly individuals at risk for micro-deficiencies in some nutrients. Realizing these causes of frailty, De Jong, et al (2000) hypothesized that an intervention that combined the effects of enriched food and all-around physical exercise would improve the stamina of elderly individuals, preserve bone and muscle mass, and, thereby, aid them in fighting against frailty.
Variables
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