Anyone who has taken time off from the gym after a period of intense strength training can attest to the fact that muscle mass decreases with inactivity. However, it's possible to rebuild ripped abs and a team of researchers at the University of Oslo have explained why.
When an individual lifts weights or engages in other muscle building exercises, nuclei incorporate into their muscle fibers before they increase in size, according to research the scientists performed on a mouse model.
The nuclei remained in muscle fibers for a considerable period of time after the mice stopped their strength training exercises, helping to prevent muscle atrophy. The researchers noted that this may give individuals the ability to regain muscle relatively quickly following a period of rest due to injury or other changes.
Additionally, the scientists said that as people age, their ability to store nuclei declines so it's best to engage in strength training while young.
The authors of the study noted that the findings may also have implications for the length of time athletes are penalized for using illegal muscle building drugs like anabolic steroids.
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