Obesity History and Daily Patterns of Physical Activity at Age 60-64 Years: Findings from the MRC National Survey of Health and Development

Rachel Cooper, Lei Huang, Rebecca Hardy, Adina Crainiceanu, Tamara Harris, Jennifer A. Schrack, Ciprian Crainiceanu, Diana Kuh

Research output: Contribution to journalArticle

Abstract

Background The aim of this study was to investigate associations of current body mass index (BMI) and obesity history with daily patterns of physical activity. Methods At age 60-64, participants from a British birth cohort study wore accelerometers for 5 days. Accelerometry counts were log-transformed and mean log-counts were used to derive a summary variable indicating total daily log-activity counts. Among those with complete data (n = 1,388) the associations of current BMI and age of first obesity were examined with: (a) total daily log-activity counts and (b) total log-activity counts in four segments of the day. Results Higher current BMI and younger age at obesity were strongly associated with lower levels of total daily activity at age 60-64 even after adjustment for sex, socioeconomic factors, and health status. The fully-adjusted mean difference in total daily log-activity counts was ' '581.7 (95% confidence interval: ' '757.2, ' '406.3) when comparing BMI ≥35 kg/m 2 with <25 kg/m 2, representing an 18.4% difference. Participants who had been obese since early adulthood had the lowest levels of activity (mean difference in total daily log-activity counts was ' '413.1 (' '638.1, ' '188.2) when comparing those who were obese by age 26 or 36 with those who were never obese, representing a 13.1% difference). Conclusions Obese older adults may require targeted interventions and additional support to improve their daily activity levels. As younger generations with greater lifetime exposure to obesity reach old age the proportion of adults achieving sufficient levels of activity to realize its associated health benefits is likely to decline.

Original languageEnglish (US)
Pages (from-to)1424-1430
Number of pages7
JournalJournals of Gerontology - Series A Biological Sciences and Medical Sciences
Volume72
Issue number10
DOIs
StatePublished - Oct 1 2017

Keywords

  • Aging
  • BMI
  • Birth cohort
  • Daily patterns of activity
  • Life course

ASJC Scopus subject areas

  • Aging
  • Geriatrics and Gerontology

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