Energy utilisation and postprandial responses during sitting interrupted by regular activity breaks.
Caitlin I Donaldson1, Jillian J Haszard1, Tracy L Perry1
1Department of Human Nutrition, University of Otago , Dunedin, New Zealand.
Journal of Sports Sciences
|July 11, 2020
Summary
Regular activity breaks improve glycaemic control. This study found that the energy used during these breaks did not consistently lower postprandial glucose, insulin, or triglycerides, suggesting break frequency may be key.
Area of Science:
- Metabolic Health
- Exercise Physiology
- Human Metabolism
Background:
- Interrupting sedentary behaviour with activity breaks improves glycaemic control.
- The role of energy expenditure during activity breaks on metabolic response is not well understood.
Purpose of the Study:
- To investigate if energy utilisation during regular, short activity breaks is associated with reduced postprandial glycaemia, insulinemia, and lipidemia.
- To examine the association between energy utilisation and metabolic responses during prolonged sitting and activity breaks.
Main Methods:
- Utilized data from two prior studies (ALPhA and ABPA) involving 100 participants.
- Measured energy utilisation via indirect calorimetry.
- Analyzed associations using mixed-effects regression models.
Main Results:
- Energy utilisation was not consistently linked to postprandial glucose, insulin, or triglyceride levels (p > 0.05).
- Evidence suggests energy utilisation may slightly suppress the beneficial effects of activity breaks on glucose, insulin, and triglyceride incremental area under the curve (iAUC).
Conclusions:
- Energy utilisation does not appear to mediate the association between activity breaks and postprandial glycaemic response.
- The frequency of activity breaks, rather than energy expenditure, may be the primary factor benefiting postprandial metabolic response.
More Related Videos
Related Concept Videos
01:18Metabolic States of the Body: The Postabsorptive State
1.1K
The postabsorptive state usually starts about four hours after a meal and lasts until the next meal is eaten. During this time, the digestive system stops absorbing nutrients, and the body uses stored energy reserves to maintain stable blood glucose levels.
Initially, glycogen stored in the liver is broken down to release glucose into the bloodstream, while glycogen in the muscles is broken down to supply glucose for energy directly within the muscle cells. As glycogen stores diminish,...
Initially, glycogen stored in the liver is broken down to release glucose into the bloodstream, while glycogen in the muscles is broken down to supply glucose for energy directly within the muscle cells. As glycogen stores diminish,...
1.1K
01:25Metabolic States of the Body: The Absorptive State
1.2K
During the absorptive state, which lasts approximately four hours after a meal, the body absorbs nutrients from the gastrointestinal tract. The carbohydrates, proteins, and lipids we consume are broken down into monosaccharides, amino acids, and free fatty acids for absorption. While carbohydrates and proteins are absorbed as-is, lipids are absorbed in their broken-down forms and then re-esterified into triglycerides within enterocytes before being packaged into chylomicrons. These absorbed...
1.2K
01:20Exercise and Cardiovascular Response
3.7K
Exercise significantly impacts cardiovascular response, which is crucial for understanding patient health and designing effective treatment plans.
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
3.7K