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Title: What types of changes cause people's muscles to decrease in size and strength du Post by: ppk on Jun 24, 2012 What types of changes cause people's muscles to decrease in size and strength during the aging process?
Title: Re: What types of changes cause people's muscles to decrease in size and strength du Post by: duddy on Jul 1, 2012 Skeletal muscles become smaller in diameter, primarily because there is a decrease in the number of myofibrils. The remaining myofibrils retain smaller ATP and glycogen reserves and less myoglobin, which results in a decrease in strength as well as size.
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