Strength, flexibility, and maturity in adolescent athletes

Area of Science:

• Sports Medicine
• Human Physiology
• Biomechanical Analysis

Background:

• Assessing athletic development requires understanding the interplay between biological maturation and physical capabilities.
• Previous research has explored factors influencing strength and flexibility, but the specific predictive power of maturational status needs further elucidation.

Purpose of the Study:

• To investigate the relationship between lower-extremity strength and flexibility and maturational status in male high school athletes.
• To compare the predictive value of Tanner staging (TS) versus chronological age on physical performance.

Main Methods:

• Eighty-four male high school athletes participated in the study.
• Lower-extremity strength was measured using one-repetition maximum lifts for knee extension and flexion.
• Flexibility was assessed using the sit-and-reach test; chronologic age, body weight, and percent fat were also recorded.

Main Results:

• Maturational age, indicated by Tanner staging, showed a stronger correlation with both strength and flexibility compared to chronological age.
• Multiple regression analysis confirmed significant correlations between TS and age with strength and flexibility.
• Tanner staging demonstrated a greater predictive value for strength and flexibility than chronological age, even after adjusting for age.

Conclusions:

• Biological maturation, as measured by Tanner staging, is a more significant determinant of lower-extremity strength and flexibility in adolescent male athletes than chronological age.
• These findings have implications for talent identification, training program design, and performance evaluation in youth sports.