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- Title
Should We Work Smarter or Harder for Our Health? A Comparison of Intensity and Domain-Based Time-Use Compositions and Their Associations With Cognitive and Cardiometabolic Health.
- Authors
Mellow, Maddison L; Dumuid, Dorothea; Wade, Alexandra; Olds, Timothy; Stanford, Ty; Keage, Hannah; Hunter, Montana; Ware, Nicholas; Simpson, Felicity M; Karayanidis, Frini; Smith, Ashleigh E
- Abstract
Background Each day is made up of a composition of "time-use behaviors." These can be classified by their intensity (eg, light or moderate–vigorous physical activity [PA]) or domain (eg, chores, socializing). Intensity-based time-use behaviors are linked with cognitive function and cardiometabolic health in older adults, but it is unknown whether these relationships differ depending on the domain (or type/context) of behavior. Methods This study included 397 older adults (65.5 ± 3.0 years, 69% female, 16.0 ± 3.0 years education) from Adelaide and Newcastle, Australia. Time-use behaviors were recorded using the Multimedia Activity Recall for Children and Adults, cognitive function was measured using the Addenbrooke's Cognitive Examination III and Cambridge Neuropsychological Test Automated Battery, and systolic and diastolic blood pressure, total cholesterol, and waist–hip ratio were also recorded. Two 24-hour time-use compositions were derived from each participant's Multimedia Activity Recall for Children and Adults, including a 4-part intensity composition (sleep, sedentary behavior, light, and moderate–vigorous PA) and an 8-part domain composition (Sleep, Self-Care, Chores, Screen Time, Quiet Time, Household Administration, Sport/Exercise, and Social). Results Linear regressions found significant associations between the domain composition and both Addenbrooke's Cognitive Examination III (p = .010) and waist–hip ratio (p = .009), and between the intensity composition and waist–hip ratio (p = .025). Isotemporal substitution modeling demonstrated that the domains of sedentary behaviors and PA impacted their associations with Addenbrooke's Cognitive Examination III, while any PA appeared beneficial for waist–hip ratio. Conclusions Findings suggest the domain of behavior should be considered when aiming to support cognitive function, whereas, for cardiometabolic health, it appears sufficient to promote any type of PA.
- Subjects
DIASTOLIC blood pressure; SEDENTARY behavior; SCREEN time; SYSTOLIC blood pressure; SLEEP
- Publication
Journals of Gerontology Series A: Biological Sciences & Medical Sciences, 2024, Vol 79, Issue 11, p1
- ISSN
1079-5006
- Publication type
Academic Journal
- DOI
10.1093/gerona/glae233