Stiffness characteristics of the lower extremities in Women's Chinese Basketball Association competition athletes: normative values and position differences.

Researchers studied leg muscle and tendon stiffness in 124 elite Chinese women's basketball players to understand how different playing positions affect the body's structural characteristics. The study included guards, forwards, and centers from over 70% of the Women's Chinese Basketball Association teams during the 2020-2021 season. Scientists measured stiffness using handheld devices at seven sites on each leg, plus vertical jumping stiffness. They found that guards had significantly stiffer patellar tendons (the tendon connecting the kneecap to the shin) compared to both centers and forwards, while forwards showed greater stiffness in certain hamstring muscles and vertical jumping characteristics than centers. This matters because optimal stiffness levels help athletes perform better while reducing injury risk—too much stiffness increases bone injury risk, while too little raises the chance of soft tissue injuries. For acupuncture patients, these findings highlight how different physical demands create distinct biomechanical patterns in the body. Acupuncture practitioners may consider these position-specific differences when treating basketball players or other athletes, as muscle and tendon stiffness variations can indicate areas of vulnerability or compensation. Understanding that guards need different patellar tendon support than forwards or centers could inform treatment planning for injury prevention and performance optimization. The study establishes baseline values that practitioners might reference when assessing whether an athlete's tissue stiffness falls within optimal ranges for their sport and position. When seeking acupuncture care for sports performance or injury prevention, look for a licensed acupuncturist with experience treating athletes.

This observational study established normative stiffness values for 124 Women's Chinese Basketball Association athletes (63 forwards, 22 centers, 39 guards) representing over 70% of WCBA teams. Quasi-static stiffness was measured via handheld myometry at seven bilateral lower extremity sites, with vertical stiffness assessed using OptoGait system during the 2020-2021 season. Kruskal-Wallis tests with Bonferroni corrections revealed position-specific differences: guards demonstrated significantly higher bilateral patellar tendon stiffness versus centers (p=0.003-0.016) and forwards (p=0.008-0.017), plus elevated right soleus stiffness compared to forwards (p=0.033). Forwards and guards showed greater left biceps femoris stiffness than centers (p=0.038-0.049), while forwards exhibited higher left vertical stiffness than centers (p=0.041). Clinical implications include position-specific injury risk profiles and the concept of optimal stiffness ranges balancing performance enhancement with injury prevention. These normative values provide baseline references for assessing athletes presenting with lower extremity complaints or performance deficits, potentially informing acupuncture treatment protocols targeting myofascial tissue characteristics.