Fig. 1From: Differences in biomarkers of cartilage matrix turnover and their changes over 2 years in adolescent and adult volleyball athletesPercentage longitudinal changes in biomarkers in baseline open adolescents, baseline closed adolescents and adults. Error bars represent 95% confidence intervals. *P < 0.05 for change from baseline to follow-up. a Percentage longitudinal changes in all biomarkers and ratios assessed, with the exception of cartilage intermediate layer protein 2 (CILP-2). b Percentage longitudinal change in cartilage intermediate layer protein 2 (CILP-2) Back to article page