One of the main reasons why life expectancy dramatically rose in the past century was due to different factors. One that surely contributed to them was better access to medical equipment and medical advances themselves. As well as better nutrition that was available to the common person.
I believe it is Fast-twitch muscle fibers. Slow-twitch fibers are used for people who exercise for a long period of time such as running, swimming, and cycling.
Answer:
b.) Athletes who are <em>younger than 19.</em>
Explanation:
This condition is called the Triad.
It is often seen in physically active girls and women. It is a syndrome that results from a relationship between<em> low energy availability with or without eating disorders, low bone mineral density and disfunction of menstrual cycle. </em>Not always all of the signs are present to diagnose <em>Female Athlete Triad.</em> It usually occurs in adolescent age ( between the age of 10 and 19), due to their skeletal immaturity and BMD. Early signs of this condition are:<em> weight changes, decreased energy and repeated injuries.</em> On the long term level, effects are: <em>low BMD, osteoporosis, suicidal thoughts, kidney failure, liver dysfunction...</em>
