Can endurance training support muscle mass gains with resistance training?
The smallest blood vessels (capillaries) in muscle tissue are responsible for the delivery of oxygen, nutrients, and growth factors. It has been shown that older adults with a low number of muscle capillaries have impaired muscle mass gains during resistance training.
How fast can aerobic capacity be improved?
Aerobic capacity is the maximal rate of oxygen consumption (VO2max). It reflects an individual’s maximal rate of aerobic energy production and is commonly used to reflect general fitness status and especially success in endurance sports.
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Does growth hormone affect muscle and tendon growth?
Growth hormone is often claimed to play an important role in muscle and tendon growth. However, this suggestion is based on animal work. Is this also true in humans?
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Can insufficient sleep increase the chance of developing a common cold?
Poor sleep is associated with susceptibility to acute infectious illness. In addition, sleep deprivation has been shown to negatively affect immune system functioning. Does this mean that you have a higher chance of getting sick when getting insufficient sleep?
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Can excessive training impair metabolic health?
Exercise training can improve exercise performance, mitochondrial function, and blood sugar control. However, it’s well known by athletes that too much training (overtraining) can hinder performance. Can excessive exercise volume also have a detrimental impact on metabolic health?
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Muscle mass gains seem to differ quite a lot between individuals. How variable are muscle mass gains?
This study assessed muscle growth in the biceps for 585 participants (342 women, 243 men) during 12 weeks of resistance training. Subjects trained only one arm, so the other arm could serve as a control. Bicep muscle cross-sectional area was measured with MRI in both arms.
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