Physical Fitness Assessment in Youth Health

Physical fitness assessment in young people serves as a cornerstone for monitoring health trajectories, guiding interventions and informing policy. Health-related fitness encompasses cardiorespiratory endurance, muscular strength and endurance, flexibility and body composition. Standardised test batteries—such as shuttle runs for aerobic capacity, handgrip dynamometry for muscular strength and anthropometric measures for adiposity—offer reliable, valid and scalable tools. Establishing normative values and centile curves enables individual profiling against age- and sex-matched peers. Regular surveillance in schools and community settings uncovers population trends, highlights inequities and supports early detection of risk factors for non-communicable diseases. Integration of fitness testing into educational and healthcare frameworks promotes stakeholder engagement, fosters lifelong physical literacy and underpins evidence-based strategies to curb rising rates of obesity, cardiometabolic disorders and sedentary behaviour worldwide.

Research from Nature Portfolio

Recent studies have defined age- and sex-specific muscular strength thresholds relative to body mass to identify elevated cardiometabolic risk in children and adolescents. By applying receiver operating characteristic analysis to handgrip dynamometry and composite metabolic scores, researchers have established precise cut-points that discriminate low and high risk of dyslipidaemia, hypertension and insulin resistance. These benchmarks facilitate early screening, enabling schools and clinicians to implement targeted strength-building programmes and monitor their impact on metabolic health from a young age.

Physical Fitness Assessment in Youth Health publication trend

The graph below shows the total number of articles in physical fitness assessment in youth health across all publications each year (not limited to Nature Index journals).

Technical terms

Cardiorespiratory fitness (CRF): A measure of the circulatory and respiratory systems’ capacity to supply oxygen during sustained physical activity, often expressed as VO₂max or performance in shuttle-run tests.

Muscular strength: The maximal force a muscle group can generate, commonly assessed by handgrip dynamometry or one-repetition maximum tests.

Body mass index (BMI): A ratio of body mass to height squared (kg/m²), used to classify underweight, normal weight, overweight and obesity in population studies.

Percentile values: Statistical rankings indicating the position of an individual’s test result relative to a reference population, facilitating age- and sex-adjusted interpretation.

Surveillance system: An organised mechanism for ongoing collection, analysis and dissemination of fitness data to inform public-health decision-making and programme development.

References

1. Handgrip strength cutoff for cardiometabolic risk index among Colombian children and adolescents: The FUPRECOL Study. Scientific Reports (2017).
2. European fitness landscape for children and adolescents: updated reference values, fitness maps and country rankings based on nearly 8 million test results from 34 countries gathered by the FitBack network. British Journal of Sports Medicine (2023).
3. Physical Fitness Surveillance and Monitoring Systems Inventory for Children and Adolescents: A Scoping Review with a Global Perspective. Sports Medicine (2024).
4. Adolescent Cardiorespiratory Fitness and Future Work Ability. JAMA Network Open (2024).