The relationships between television viewing in midlife and the development of Alzheimer disease in a case-control study
ABSTRACT The relationship between leisure activities and development of cognitive impairment in aging has been the subject of recent research. We examined television viewing in association with risk of developing Alzheimer's disease (AD) in a case-control study. Given recent focus on the importance of intellectually stimulating activities as preventive measures against cognitive decline, it is important to examine the effects of less stimulating but common activities. Data are from 135 Alzheimer's disease cases and 331 healthy controls. Demographic characteristics and life history questionnaire responses on the number of hours spent on 26 leisure activities during middle-adulthood (ages 40-59) were analyzed. Logistic regression was used to examine the effects of middle-adulthood leisure activities on case vs. control status. Results indicate that for each additional daily hour of middle-adulthood television viewing the associated risk of AD development, controlling for year of birth, gender, income, and education, increased 1.3 times. Participation in intellectually stimulating activities and social activities reduced the associated risk of developing AD. Findings are consistent with the view that participation in non-intellectually stimulating activities is associated with increased risk of developing AD, and suggest television viewing may be a marker of reduced participation in intellectually stimulating activities.
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ABSTRACT: Objective: Physical and sociocognitive lifestyle activities promote aspects of cognitive function in older adults. Very little is known about the relation between these lifestyle activities and cognitive function in young adults. One aspect of cognitive function that is critical for everyday function is episodic memory. The present study examined the relationship between lifestyle activities and episodic memory in younger and older adults. Method: Participants were 62 younger (mean age = 24 years) and older adults (mean age = 74 years). The augmented Victoria Longitudinal Study Activities Questionnaire was used to quantify level of engagement in physical activity, sociocognitive activity, and TV viewing. Episodic memory was assessed using the old-new face recognition paradigm in which memory for younger and older faces was tested. Results: Compared to younger adults, older adults reported being less physically and sociocognitively active while engaging in more passive behaviors such as TV viewing. A positive association was observed between physical activity and episodic memory for young adults but not for older adults. Interestingly, TV viewing was negatively associated with episodic memory in older adults but not younger adults. No relationship was found between sociocognitive activity and episodic memory for either younger or older adults. Although the own-age effect was observed for older adults, face age did not interact with lifestyle activities. Conclusion: The positive cognitive benefits of physical activity extend to younger adults; however, the interplay between physical activity and cognition may differ across the life span. Furthermore, TV viewing may be particularly detrimental to cognitive performance later in life. (PsycINFO Database Record (c) 2014 APA, all rights reserved).Health Psychology 01/2014; DOI:10.1037/hea0000046 · 3.95 Impact Factor
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ABSTRACT: Die Reservekapazität des Gehirns ist seine Fähigkeit, neuropathologische Veränderungen so zu tolerieren, dass ihre klinische Manifestation hinausgezögert wird. Diese Studie untersucht, inwiefern frühere motivationale („motivationale Reserve“), kognitive und körperliche Fähigkeiten bzw. Aktivitäten unabhängige Prädiktoren einer leichten kognitiven Beeinträchtigung im Alter sind. Eine Stichprobe von 147 nicht-dementen Personen zwischen 60 und 94 Jahren absolvierte kognitive Tests und Fragebogen zur Berufsbiographie sowie früheren körperlichen Aktivitäten. Frühere motivationale und kognitive Fähigkeiten wurden auf der Basis des Hauptberufs unter Anwendung der Datenbank des Occupational Information Networks (O*NET) geschätzt. Die früheren motivationalen Fähigkeiten und die kristallisierte Intelligenz sagten ein reduziertes Risiko einer leichten kognitiven Beeinträchtigung voraus, nicht aber frühere körperliche Aktivitäten. Die Ergebnisse legen nahe, dass insbesondere die motivationale Reservekapazität als protektiver Faktor gegen kognitive Beeinträchtigung im Alter wirkt.Zeitschrift für Neuropsychologie 01/2009; 20(1). DOI:10.1024/1016-264X.20.1.47 · 0.64 Impact Factor
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ABSTRACT: The associations between serum brain-derived neurotrophic factor (BDNF) levels and several health-related lifestyle factors were evaluated in 85 healthy human subjects. Results showed that the frequency of fruit intake, exercise and television watching were associated with serum BDNF level. There was a higher serum BDNF level from the group with fruit intake five to six times per week. Subjects with moderate frequency of exercise (1-30 times of 30 min exercise per month) showed higher serum BDNF level than the group with exercise more than 30 times per month. There was a significant positive correlation between serum BDNF and the daily average watching television time in the younger age group (18-35). The result of this study supports the need for larger studies with different health-related lifestyle in healthy subjects or subjects with disorders.Neuroscience Letters 11/2008; 447(2-3):124-8. DOI:10.1016/j.neulet.2008.10.013 · 2.06 Impact Factor