Well, that is a bit specific, but the link between Vitamin D status and bone fractures and stress fractures has been documented in virtually every population. I’m not sure that is a matter of debate as it is regarded as fact in most literature. I guess the question is whether or not it is a problem that exists in elite athletes. Most data would point this way, although vitamin D is probably deficient in almost everybody in the Western world.
Elite female gymnasts are low in vitamin D
Lovell, Greg. “Vitamin D status of females in an elite gymnastics program.” Clinical Journal of Sport Medicine 18.2 (2008): 159.
Middle Eastern athletes are chronically deficient in Vitamin D
Constantini, Naama W., et al. “High prevalence of vitamin D insufficiency in athletes and dancers.” Clinical Journal of Sport Medicine 20.5 (2010): 368-371.
Bone fractures in young athletes are highly associated with vitamin D status
Tenforde, Adam S., et al. “Evaluating the relationship of calcium and vitamin D in the prevention of stress fracture injuries in the young athlete: a review of the literature.” PM&R 2.10 (2010): 945-949.
Overview of literature that concludes athletes are chronically low in vitamin D
Larson-Meyer, D. Enette, and Kentz S. Willis. “Vitamin D and athletes.” Current sports medicine reports 9.4 (2010): 220-226.