A Massey University study is set to investigate the impact long hours of rigorous indoor training has on a ballerina's body.
Researchers at the Albany campus want 100 Auckland -based ballerinas for their study on the role vitamin D has in dancers' health.
Masters student Sarah Mitchell says ballerinas often don't get enough vitamin D as they spend little time outdoors, and their diets are restricted.
"Vitamin D's a hot topic right now, it's being linked to various things including depression, colds and flu's and now muscle strength."
Mitchell says they'll testing vitamin D levels, bone mineral density and the muscle strength of the ballerinas over the course of a year.
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