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Low physical activity, high sedentary time in nonobese adults tied to greater adiposity

03 Dec 2018

High sedentary time (ST) and low moderate-to-vigorous physical activity (MVPA) among nonobese young adults are associated with increased adiposity, reports a new study. However, these factors do not predict change in adiposity over time.

Participants (mean body mass index [BMI], 22.6±2.4 kg/m2) had 8.5±1.5 ST/day and 0.4±0.3-hour MVPA/day. At baseline, engagement in ST for ≥8 hours/day was associated with greater fat mass (FM), anthropometry (%FM) and lower MVPA, whereas MVPA for ≥30 min/day was associated with lower FM and %FM.

Fully adjusted models showed the significant association of ST with baseline body weight, hip circumference, BMI, FM and %FM and with year-1 body weight, waist and hip circumference, FM and %FM, but not with any year-2 adiposity indicators. In addition, MVPA did not correlate with any adiposity indicators at baseline, year 1 or year 2.

Participants significantly increased waist circumference, BMI, FM and %FM over 2 years (p<0.05 for all), but no associations were found among baseline ST and MVPA with change in adiposity.

In this study, the authors recruited 71 adults aged 20–35 years. They measured ST and MVPA by accelerometry and reported energy intake at baseline, and %FM and FM by dual-energy X-ray absorptiometry at baseline, year 1 and year 2.

Repeated-measures linear regression models were used to examine the associations of baseline ST and MVPA with adiposity, controlling for age, sex and reported energy intake. The Benjamini-Hochberg procedure was used to adjust for multiple comparisons.

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Most Read Articles
Stephen Padilla, 28 Nov 2018
A low-carbohydrate diet increases energy expenditure during weight loss maintenance, consistent with the carbohydrate-insulin model, a study has shown. This metabolic effect may contribute to the success of obesity treatment, particularly among those with high insulin secretion.
Natalia Reoutova, 07 Jul 2020

A hospital-based observational cohort study finds an association between higher fasting blood glucose (FBG) levels and unfavourable outcomes, including death, among Chinese patients with diabetes mellitus (DM) following acute ischaemic stroke (AIS).

Elaine Soliven, 06 Jul 2020
Adding liraglutide to metformin led to a significantly longer duration of glycaemic control in patients with type 2 diabetes (T2D) compared with an oral antidiabetic drug (OAD), according to the LIRA-PRIME* study presented at ADA 2020.