Poor sleep affects dieters muscle mass – study


Dieters who suffer from poor quality sleep could lose muscle rather than fat, according to the results of a new US study. The University of Chicago research team found that test subjects who slept an average of 8.5 hours and 5.5 hours lost around the same amount weight, but the shorter sleep group lost a higher degree of muscle.

Ten overweight test subjects took part in the study, which involved identical low calorie diets and strictly timed sleeping periods over a two week period.

During the 8.5 hour sleep sessions weight loss was found to be more than 50% fat, while during the 5.5 hour sleep sessions the fat content of lost weight was around just 25%.

“They lost the same amount of weight, but the composition was different,” said senior researcher Dr. Plamen Penev.

The results of the study indicate that sleep quality and duration are key elements in managing body weight.

Sleep quality has been linked to weight in several previous studies, with obesity one of the related issues in some cases.

More stories like this one

On the land and waters that we sleep, we walk, and we live, we acknowledge the Traditional Owners and Custodians of these lands. We pay respects to Elders past, present and emerging, and recognise their connection to the land.

Ergoflex in the UK    Ergoflex in Australia

Copyright © Ergoflex™ 2024

Ergoflex Australia, trading name of EAU Pty Ltd. 7/2 Sabre Close, Anambah Business Park, Rutherford, NSW, 2320 ABN: 85 141 058 380

Call Us


1300 791 753