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While it's established that cardio and weight lifting build muscle, new research in mice shows that endurance exercise boosts the growth of vital muscle stem cells and fundamentally changes their metabolism.
It is too early to translate the findings directly to people. Still, this research could inform strategies to help people bounce back from injury, resist the loss of muscle mass that comes with ageing, and gain benefits even if people can't exercise.
Muscle maintenance is vital to ensure healthy ageing.
In research with mice, researchers found that aerobic exercise changed how the animals consumed oxygen, metabolised sugar, and how tired they were when they weren't exercising. The mice were leaner and had fewer signs of inflammation.
The research team isolated muscle tissue and focused on satellite cells - stem cells that live in skeletal muscle and regenerate muscle throughout adulthood.
These cells are activated continuously, but over time become fatigued and stop renewing. Endurance exercise increases proteins involved in quieting and activating these satellite cells, which enable self-renewal or differentiation.
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In exercise, carbohydrate-rich diets are often recommended to promote recovery and maximise performance.
However, research suggests such foods may not help exercise recovery. There is a...
Since late 1960, the energy status of muscles is deemed to be important in exercise performance.
Since carbohydrate is the preferred energy source for muscle contraction during intense exercise, sports nutrition guidelines recommend eating carbohydrate-rich food to maximise performance. The guidelines suggest eating one gram of carbohydrate for every kilogram of your body mass, each hour for four hours.
The current nutritional recommendations for performance may not be ideal for promoting recovery.
Any kind of exercise, be it aerobic, walking or Yoga, changes the brain's composition, structure and the way it operates. The changes that happen to the brain:
The brain's electric impulses change, and the Beta waves increase during and after exercise, putting it in a better, more alert state.
Exercise makes our senses sharper and clearer, and we are more perceptive and have better sensitivity to our surroundings.