Tanner-Whitehouse Skeletal Ages in Male Youth Soccer Players: TW2 or TW3?
Tanner-Whitehouse Skeletal Ages in Male Youth Soccer Players: TW2 or TW3?
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DOI：
10.1007/s40279-017-0799-7
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发表时间：
2018-04-01
期刊：
影响因子：
9.8
通讯作者：
Buranarugsa, Rojapon
中科院分区：
文献类型：
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作者：
Malina, Robert M.;Coelho-e-Silva, Manuel J.;Buranarugsa, Rojapon
背景 用于评估骨龄 (SA) 的 Tanner-Whitehouse 桡尺骨短骨方案 (TW2 RUS) 被广泛用于估计儿童和青少年的生物（骨骼）成熟度状态。将 TW RUS 评级转换为 SA 的量表已修订 (TW3 RUS)，对年龄组运动中青年运动员的研究具有影响。 目的 本研究的目的是比较国际男子青年足球运动员样本中的 TW2 和 TW3 RUS SA，并按每个 SA 协议定义的成熟度状态比较球员的分布。 方法 使用 TW RUS 方法对 1831 名 11-17 岁的男子足球运动员进行了 SA 评估，从 8 岁到 8 岁进行了整理国家。使用适当的表格将 RUS 分数转换为 TW2 和 TW3 SA。 SA 与个体运动员的实际年龄 (CA) 相关，并按 CA 组进行比较。 TW2 SA 和 TW3 SA 的 SA 减去 CA 的差异用于通过每种方法将玩家分类为晚熟、一般或早熟。利用Cohen'sKappa系数评估成熟度分类的一致性。结果在相同的RUS评分下，TW3 SA与TW2 SA相比系统性地大幅降低； CA 组的平均差异范围为 -0.97 至 -1.16 年。 Kappa 系数表明 TW2 和 TW3 成熟度分类的最佳公平一致性。在整个年龄范围内，42% 的 TW2 SA 被归类为一般的球员被归类为 TW3 SA 较晚，而 64% 的 TW2 SA 被归类为较早的球员被归类为 TW3 SA 为一般。 结论 在男性青少年足球运动员中，TW3 SA 系统性地低于相应的 TW2 SA。量表之间的差异对于按成熟度状态对球员进行分类具有重大影响，这对于某些人才发展计划至关重要。
Background The Tanner-Whitehouse radius-ulna-short bone protocol (TW2 RUS) for the assessment of skeletal age (SA) is widely used to estimate the biological (skeletal) maturity status of children and adolescents. The scale for converting TW RUS ratings to an SA has been revised (TW3 RUS) and has implications for studies of youth athletes in age-group sports.Objectives The aim of this study was to compare TW2 and TW3 RUS SAs in an international sample of male youth soccer players and to compare distributions of players by maturity status defined by each SA protocol.Methods SA assessments with the TW RUS method were collated for 1831 male soccer players aged 11-17 years from eight countries. RUS scores were converted to TW2 and TW3 SAs using the appropriate tables. SAs were related to chronological age (CA) in individual athletes and compared by CA groups. The difference of SA minus CA with TW2 SA and with TW3 SA was used to classify players as late, average, or early maturing with each method. Concordance of maturity classifications was evaluated with Cohen'sKappa coefficients.Results For the same RUS score, TW3 SAs were systematically and substantially reduced compared with TW2 SAs; mean differences by CA group ranged from -0.97 to -1.16 years. Kappa coefficients indicated at best fair concordance of TW2 and TW3 maturity classifications. Across the age range, 42% of players classified as average with TW2 SA were classified as late with TW3 SA, and 64% of players classified as early with TW2 SA were classified as average with TW3 SA.Conclusion TW3 SAs were systematically lower than corresponding TW2 SAs in male youth soccer players. The differences between scales have major implications for the classification of players by maturity status, which is central to some talent development programs.