e-space
Manchester Metropolitan University's Research Repository

Using isotemporal substitution to predict the effects of changing physical behaviour on older adults’ cardio-metabolic profiles

Ryan, Declan and Wullems, Jorgen Antonin and Onambélé-Pearson, Gladys (2019) Using isotemporal substitution to predict the effects of changing physical behaviour on older adults’ cardio-metabolic profiles. [Dataset] (Unpublished)

Abstract

Background: It has been advocated that older adults should concomitantly spend less time in sedentary behaviour (SB), and engage in sufficient physical activity (PA), to reduce their risk of cardio-metabolic diseases. However, it is not clear what intensity of PA must be done to offset SB engagement. Aim: Model how cardio-metabolic profiles could change if older adults replaced an hour per day (hr·day-1) of a physical behaviour intensity with 1 hr·day-1 of another physical behaviour of a different intensity. Methods: Older adults (n=93, 60-89 years old, 55% female) wore a thigh-mounted triaxial accelerometer for seven consecutive free-living days to estimate mean daily hourly engagement in SB, Standing, Light Intensity PA (LIPA), sporadic moderate to vigorous physical activity (sMVPA, bouts <10 continuous minutes), and 10-minute MVPA (10MVPA, bouts ≥10 continuous minutes. Fasting whole blood concentration of plasma glucose, triglyceride, total cholesterol, and glycated haemoglobin (%), along with serum concentration of lipoprotein lipase (LPL), interleukin-6 (IL-6), and procollagen III N-terminal propeptide (PIIINP) were measured. Results: Isotemporal Substitution, with covariate adjustment, suggested that: total cholesterol concentration could theoretically decrease when 1 hr·day-1 of SB is replaced with Standing, when 1 hr.day-1 of LIPA is replaced with Standing, and when 1 hr·day-1 of sMVPA is replaced with Standing. Triglyceride concentration theoretically decreased when 1 hr·day-1 of SB, Standing, LIPA, or sMVPA is replaced with 10MVPA. Triglyceride concentration theoretically increases when 1 hr·day-1 of 10MVPA is replaced with SB, Standing, or LIPA. No associations with time reallocation appears to exist for LPL, HbA1c, IL-6, and PIIINP. Conclusion. The type of physical behaviour being replaced could be crucial for total cholesterol maintenance. Engagement in 10MVPA could be necessary to improve triglyceride concentration. We also discuss why in some cases, the least metabolically demanding activities seem to improve the endocrine profile more so than the demanding physical behaviours.

Publisher: Manchester Metropolitan University
Divisions: Faculties > MMU Cheshire
Last Modified: 17 Oct 2019 11:42
Subject terms: cardio-metabolic diseases, physical activity, older adults
URI: https://e-space.mmu.ac.uk/id/eprint/623717
DOI: https://doi.org/10.23634/MMUDR.00623717

Files

Full Archive

Impact and Reach

Statistics

Downloads
Activity Overview
93Downloads
218Hits

Additional statistics for this dataset are available via IRStats2.

Altmetric

Actions (Log-in required)

Edit Item Edit Item