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Exercise counters the physiological effects of Christmas excess
Date:12/14/2013

of our experiment is that we matched the energy surplus between groups so the exercise group consumed even more energy and were still better off at the end of the week."

After one week, the groups had blood insulin measurements and biopsies of fat tissue taken, with striking results. The non-exercising group showed a significant and unhealthy decline in their blood sugar control, and their fat cells were overexpressing genes linked to unhealthy metabolic changes and were under-expressing genes involved in well-functioning metabolism. However, the exercising group had stable blood sugar levels and their fat cells showed less 'undesirable' genetic expression.

Jean-Philippe Walhin, a researcher on the study, says, "Short-term overfeeding and reduced physical activity had a dramatic impact on the overall metabolic health of the participants and on various key genes within fat tissue and exercise prevented these negative changes even though energy was still being stored."

Dr Dylan Thompson says: "If you are facing a period of overconsumption and inactivity, which is probably quite common around Christmas time, then our study shows that a daily bout of exercise will prevent many of the negative changes from taking place even though you are gaining weight."

The effects are obvious, but the underlying causes will need further study to be determined. The findings are likely to apply to other groups, like older adults and women, and perhaps to lesser amounts of training.


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Contact: Lucy Holmes
LHolmes@physoc.org
44-020-726-95727
Wiley
Source:Eurekalert

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