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Quantitative Study Critique

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Group Quantitative Research Study Critique
This critique analyzes the research study, “A community-based exercise programme to improve functional ability in people with Alzheimer’s disease: a randomized controlled trial”, by Vreugdhil, Cannell, Davies, and Razay (2011). This critique will evaluate the research question, hypothesis, study variables, literature review, population and sample, ethical considerations, procedures for data analysis and collection, and the findings and conclusions. It will also synthesize the findings of the research for application to practice.
The research question, hypothesis, and study variables were first critiqued. Although the authors did not state a clear research question, they wrote that they aimed to assess …show more content…

With the exception of 1 study, the studies cited were less than 10 years old. This assured that the information used to provide proof for the need of this type of study was current at the time. The researchers provided a compelling argument for the necessity of a research study of this type. Using the literature review, they were able to prove a gap in the knowledge regarding effectiveness of an exercise intervention for individuals with AD, despite the growing incidence of AD, importance that individuals with AD retain as much function as possible, and the resulting benefits for carers of individuals with …show more content…

Researchers used two tests to measure cognitive function. These tests were the Mini-Mental State Examination (MMSE) and the Alzheimer’s Disease Assessment Scale – Cognitive Sub- Scale (ADAS-Cog). To measure physical function, the Functional Reach test was used to assess balance, the Timed Up and Go test was used to assess basic functional mobility, and the Sit-to-Stand test was used to assess lower body strength. To measure Activities of Daily Living (ADLs), the Barthel Index of Activities of Daily Living and the Instrumental Activities of Daily Living assessment were used. The Geriatric Depression Scale – Short Form was used to assess depression. The Clinician’s Interview Based Impression of Change plus Caregiver Input (CI-BIS-plus) was used to assess global change in function. To measure carer burden, the Zarit Burden Interview was used. An explanation of the measurement tools for the outcome assessments of waist to hip ratio and body mass index (BMI) was not included. The outcome assessment tools as a group were described as standardized, however the validity and reliability of the measures was not discussed by the researchers. Inclusion of all measurement methods and acknowledgement of the reliability and validity of the measurement tools used would have increased the rigor of this study. The study was a 4 month long randomized controlled trial of 40 consecutive patients who had been diagnosed with

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