BackgroundIn order to accurately measure and monitor levels of moderate-to-vigorous physical activity (MVPA) and sedentary behaviour (SB) in older adults, cost efficient and valid instruments are required. To date, the International Physical Activity Questionnaire (IPAQ) has not been validated with older adults (aged 60 years plus) in the United Kingdom. The current study aimed to test the validity of the IPAQ in a group of older adults for both MVPA and SB.MethodsParticipants wore an Actigraph GT3X+ for seven consecutive days and following the monitor wear participants were asked to complete the IPAQ. Statistical analysis included: Kolmogorov-Smirnov tests; descriptive analyses; Spearman’s rho coefficients; and Bland-Altman analyses.ResultsA sample of 253 older adults were recruited (mean age 71.8 years (SD 6.6) and 57% male). In total, 226 had valid accelerometer and IPAQ data for MVPA and 228 had valid data for SB. Results showed the IPAQ had moderate/acceptable levels of validity (r = .430–.557) for MVPA. For SB, there was substantial levels of validity on weekdays (r = .702) and fair levels of validity (r = .257) on weekend days. Bland-Altman analysis showed inherent measurement error with the majority of participants tending to under-report both MVPA and SB. Results showed the majority of older adult’s under-report their level of MVPA and SB when completing the IPAQ and the linear relationship above the mean shows an error from under to over reporting as the mean increases.ConclusionsFindings from the current study suggest that the IPAQ is better implemented in larger surveillance studies comparing groups within or between countries rather than on an individual basis. Findings also suggest that the IPAQ validity scores could be strengthened by providing additional detail of types of activities older adults might do on a daily basis, improving recall; and it may also be necessary to provide an example of a daily break down of typical activities performed. This may enable older adults to more fully comprehend the amount of time they may spend active, sitting and/or lying during waking hours.
SUMMARYObjective: To examine executive function, intelligence, visuospatial skills, language, memory, attention, reaction time, anxiety, depression, and emotional and behavioral traits most frequently associated with executive dysfunction in patients with juvenile myoclonic epilepsy (JME) compared with a sibling and a normal control group under video-electroencephalography (video-EEG) conditions. Methods: Twenty-two sibling pairs, one with JME, were compared with 44 controls matched for age, gender, and educational level. All participants were administered a comprehensive set of neuropsychological and questionnaire measures during and without video-EEG recording. Results: The JME group differed significantly from controls in measures of phonemic and semantic verbal fluency. They scored significantly higher on the dysexecutive self-rating questionnaire, being more likely to report traits associated with executive dysfunction than both siblings and controls. Patients with JME reported significantly low mood than both controls and their siblings. Unaffected siblings differed significantly from controls on psychomotor speed, phonemic verbal fluency and were considered to exhibit traits associated with executive dysfunction by others. Qualitative inspection of data suggested a convincing trend for patients with JME and their siblings to perform worse than controls on most measures. Significance: This study supports the existence of a distinct neuropsychological profile among patients with JME and their siblings, which is likely to be genetically determined. The similarity of neuropsychological profiles between JME patients and their siblings is independent of antiepileptic drug effects or subclinical EEG activity. The significant differences between the sibling and controls suggests that there is a neurocognitive endophenotype for JME.
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