436 EP080 – An association of speed performance and injury history with bone mineral density in national level kho-kho players of India

Background Maintenance of physical fitness and optimum bone health is crucial to meet the training demands, decreased risk for injury and to achieve optimum sports performance. Objective To investigate the status of bone Mineral Density (BMD), serum vitamin D, serum calcium and injury history and association of BMD with speed, agility and injury history in National level Kho-Kho players. Design The participants were recruited through a purposive sampling technique. Setting The study was conducted on male Indian Kho- Kho players undergoing training in a national camp. Participants The study included fifty-two healthy male Indian Kho- Kho players aged 16–31 years. The inclusion criteria were general good health and a willingness to participate in the study. The exclusion criteria included recent history of acute or chronic debilitating illness, injury, smoking, alcoholism, medication and food allergies. Assessment BMD, serum calcium and vitamin-D3, 30m sprint and Illinois tests and Injury history. Main Outcome Measurements BMD scores: T Scores and Z scores were considered as independent variables. Results T-Score showed lower values in 22.5% (MeanSD: 0.32  0.96; Range: -2 to +3) of players as compared to the standard cut-offs given by WHO (-1SD & above). Serum Vitamin-D3 was lower (<20ng/ml), in 13.7% and insufficient (>20≤30ng/ml) in 54.9% of players. Ankle (23.1%), knee (15.4%) and shoulder injuries (11.5%) were higher as compared to other injuries. No significant correlation between BMD markers (T-Score, Z-Score), serum vitamin-D3 and calcium was observed. T-Score (r=0.295, p<0.05) and Z-score (r=0.321, p<0.05) were significantly positively correlated with speed, but not with agility. An association was found between Z-Score (Std.:1.38, CI:0.34 – 2.44, p<0.01) and T-Score (Std-:1.49, CI: 0.37–2.62, p<0.01) and speed. No significant association was found between injury history and BMD. Conclusions Low BMD and vitamin-D3 deficiency were prevalent among Kho-Kho players. Speed performance has an association with BMD.