Prospective associations between changes in physical activity and sedentary time and subsequent lean muscle mass in older English adults: the EPIC-Norfolk cohort study

Background The longitudinal associations between physical behaviours and lean muscle mass indices need to be better understood to aid healthy ageing intervention development. Methods We assessed physical behaviours (total physical activity, moderate-to-vigorous physical activity (MVPA), light physic...
Ausführliche Beschreibung

Background The longitudinal associations between physical behaviours and lean muscle mass indices need to be better understood to aid healthy ageing intervention development. Methods We assessed physical behaviours (total physical activity, moderate-to-vigorous physical activity (MVPA), light physical activity, total sedentary time and prolonged sedentary bout time) for 7 days using hip-worn accelerometers. We also assessed domain-specific physical behaviours (walking, cycling, gardening and housework time) with self-report questionnaires at baseline (2006–2011) and follow-up (2012–2016) in the European Prospective Investigation into Cancer (EPIC)-Norfolk study. We assessed body composition using dual-energy X-ray absorptiometry (DEXA) at follow-up in 1535 participants (≥ 60 years at baseline). From this, we derived appendicular lean muscle mass (ALM) indices (% relative ALM = (ALM/total body weight)*100), body mass index (BMI)-scaled ALM (ALM/BMI, kg/kg/$ m^{2} $) and height-scaled ALM (ALM/$ height^{2} $, kg/$ m^{2} $)). We evaluated the prospective associations of both baseline and change in physical behaviours with follow-up muscle mass indices using multivariable linear regression. Results Over 5.5 years (SD 14.8) follow-up, higher baseline accelerometer-measured physical activity and lower sedentary time were associated with higher subsequent relative ALM and BMI-scaled ALM, but not height-scaled ALM (e.g. 0.02% higher subsequent relative ALM per minute/day of baseline MVPA for men). Greater increases in physical activity and greater declines in sedentary time variables were associated with higher subsequent relative ALM and BMI-scaled ALM, but not height-scaled ALM (e.g. 0.001 kg/kg/$ m^{2} $ subsequent BMI-scaled ALM and 0.04% subsequent relative ALM per min/day/year increases in LPA over follow-up; 0.001 kg/kg/$ m^{2} $ subsequent BMI-scaled ALM and -0.03% subsequent relative ALM per min/day/year less of total sedentary time over follow-up). Greater increases in women’s cycling and gardening over follow-up were associated with greater subsequent relative ALM (cycling 0.9% per hour/week/year; gardening 0.2% per hour/week/year) and BMI-scaled ALM (cycling 0.03 kg/kg/$ m^{2} $ per hour/week/year; gardening 0.004 kg/kg/$ m^{2} $ per hour/week/year). Conclusion Physical behaviours across all intensities, and in women more specifically cycling and gardening, may help prevent age-related declines in muscle mass. Ausführliche Beschreibung

Autor*in:	Yerrakalva, Dharani [verfasserIn] Hajna, Samantha Khaw, Kay-Tee Griffin, Simon J. Brage, Soren

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2024

Schlagwörter:	Physical behaviour Muscle mass Sarcopenia Longitudinal Older adults Physical activity Sedentary Muscle

Anmerkung:	© The Author(s) 2024

Übergeordnetes Werk:	Enthalten in: International journal of behavioral nutrition and physical activity - London : BioMed Central, 2004, 21(2024), 1 vom: 26. Jan.
Übergeordnetes Werk:	volume:21 ; year:2024 ; number:1 ; day:26 ; month:01

Links:	Volltext

DOI / URN:	10.1186/s12966-023-01547-6

Katalog-ID:	SPR054540305