![]() ![]() The 20-meter shuttle run test (20-m SRT) (Tomkinson and Olds, 2007 Catley and Tomkinson, 2013) is considered the most effective field-based measurement of CRE for children and youth and is the most widely used method for this purpose worldwide. Additionally, CRE can track these capabilities relatively well from childhood to adulthood (Malina, 2001 Ortega et al., 2013). CRE can be used to provide insight into the synergistic capabilities of various bodily systems and organs involved in performing physical activity and exercise (Ortega et al., 2008). CRE has been inversely associated with body fat (Andersen et al., 2008), metabolic syndrome (Brage et al., 2004), arterial compliance (Reed et al., 2005), cardiovascular disease risk (Ortega et al., 2008), cancer, and mental health disorders (Ruiz et al., 2009a). This study provided national sex- and age-specific 20-m SRT Chinese norms, offering a valuable tool for screening, monitoring and identifying target groups for future interventions and early prevention of cardiovascular risk factors.Īs an important indicator of health in children and youth, cardiorespiratory endurance (CRE) reflects the ability to deliver and use oxygen to generate energy for muscle activity during exercise (Armstrong et al., 2011 Institute of Medicine, 2012). The sex differences were also higher for international than Chinese students. The performance indicator (z-score) of Chinese children and youth was -0.01, indicating that 20-m SRT performance was worse than the international mean. Chinese children and youth underperformed international norms by 0.85% for boys and 3.1% for girls. Younger children and youth were more likely to meet the standards compared with the older, regardless of sex. Chinese boys consistently outperformed girls, while more girls (86.4%) exhibited healthy CRE than boys (67.1%). We also estimated the prevalence of healthy CRE according to the interim international cut-points (42 mL.kg -1min -1 for boys, 35 mL Sex- and age-specific 20-m SRT percentiles and curves were extracted for four common 20-m SRT metrics (laps, completed stages/minutes, speed at the last complete stage, estimated peak oxygen uptake). Participants were 69,960 healthy children and youth aged 9-17 years from six geographical areas of China, selected using a stratified cluster random sampling method. ![]() We aimed to develop sex- and age-specific 20-m SRT norms for Chinese children and youth, and compare them with international standards. However, there have been few attempts to set 20-m SRT norms for Chinese children and youth. ![]() The 20-meter shuttle run test (20-m SRT) is considered the most effective and widely used field-based measurement of CRE for children and youth worldwide. There is increasing evidence that cardiorespiratory endurance (CRE) is declining among Chinese children and youth. ![]()
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