Discriminative ability and Concurrent validity of Nintendo Wii balance test in older adults
Author
Hansen, Nicolas Brandt
Term
4. term
Education
Publication year
2013
Submitted on
2013-06-25
Pages
81
Abstract
Faldulykker er et stort sundhedsproblem blandt ældre verden over. Vi undersøgte, om enkle balance- og bevægelsestest på Nintendo Wii Fit kan bruges til at vurdere postural kontrol (evnen til at holde balancen) og skelne mellem ældre, der har haft et fald, og ældre uden fald. I alt deltog 26 personer med faldhistorik (65–90 år) og 33 uden (65–86 år). De gennemførte både kliniske standardtests og to Wii Fit-tests: Stillness (at stå så stille som muligt) og Agility (stigende krævende balance- og bevægelsesniveauer). For at vurdere samtidig validitet sammenlignede vi Wii Fit-resultaterne med velkendte kliniske mål: Short Physical Performance Battery (SPPB), Functional Reach Test (FRT) og Single Leg Stance Test (SLST). Personer uden fald klarede sig markant bedre end personer med fald i Stillness. De nåede også flere niveauer i Agility, men præstationen var påvirket af alder. Når vi så på variationen i resultaterne, kunne Wii Fit-testene dog ikke alene skelne pålideligt mellem grupperne. Agility-testen korrelerede moderat til stærkt med SPPB, FRT og SLST, når alle deltagere blev analyseret samlet (ca. 0,62–0,70). Blandt deltagerne med fald var korrelationerne moderate (ca. 0,59–0,67), mens de blandt deltagerne uden fald var lave (ca. 0,02–0,21) med undtagelse af FRT (0,39). Vi undersøgte også, hvor mange gentagelser der skal til for at få stabile Agility-scorer. For at holde målefejlen under 10 % behøvede deltagere med fald fire forsøg og deltagere uden fald to; for at komme under 5 % behøvede de henholdsvis otte og seks forsøg. Disse estimater er usikre, fordi gennemsnit af flere forsøg påvirkede resultaterne. Samlet set opfangede Wii Fit-testsene Stillness og Agility gruppeforskelle, men mere udfordrende kliniske tests kan være nødvendige for bedre at skelne mellem grupperne og understøtte samtidig validitet.
Falls are a major health concern for older adults worldwide. We examined whether simple balance and movement tests on the Nintendo Wii Fit can be used to assess postural control and distinguish between older adults who had fallen and those who had not. A total of 26 participants with a history of falling (65–90 years) and 33 without (65–86 years) completed standard clinical assessments and two Wii Fit tests: Stillness (standing as steadily as possible) and Agility (progressively more demanding balance and movement levels). To assess concurrent validity, we compared Wii Fit results with established clinical measures: the Short Physical Performance Battery (SPPB), the Functional Reach Test (FRT), and the Single Leg Stance Test (SLST). Non-fallers performed significantly better than fallers on Stillness. They also reached more levels on Agility, although performance was influenced by age. However, when considering score variability, the Wii Fit tests alone did not reliably discriminate between the groups. The Agility test showed moderate to strong correlations with SPPB, FRT, and SLST when all participants were analyzed together (about 0.62–0.70). Within the fallers, correlations were moderate (about 0.59–0.67), whereas within the non-fallers they were low (about 0.02–0.21) except for FRT (0.39). We also explored how many attempts are needed for a stable Agility score. To keep measurement error below 10%, fallers needed four trials and non-fallers two; to stay below 5%, fallers needed eight trials and non-fallers six. These estimates are uncertain because averaging across trials affected the results. Overall, the Wii Fit Stillness and Agility tests detected group differences, but more challenging clinical tests may be needed to improve discrimination between fallers and non-fallers and to support concurrent validity.
[This abstract was generated with the help of AI]
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