In adults, the range of motion for women exceeds that of men on average by 5 to 15 degrees across all joints, according to biomechanical studies. This superiority remains observable even when accounting for training or athletic level.
Knee ligament injuries, particularly anterior cruciate ligament tears, affect women more due to anatomical and hormonal specificities. Research identifies several structural and physiological factors to explain these disparities, questioning the idea of strict functional equality between the sexes in sports practice.
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Understanding Flexibility: Physiological Differences Between Women and Men
Forget the clichés: the ability of a female body to flex is not just a figment of the imagination. Scientific data is robust. Women’s bodies show a more pronounced metabolic flexibility, meaning an agility to adapt to different physical demands. This phenomenon has its roots in muscle composition: in women, type I fibers dominate, developing endurance and recovery, while men rely on a majority of type II fibers, designed for power and speed.
Muscle mass, which is more discreet in women, and generally lower blood pressure provide a significant advantage for joint mobility. At equal exercise levels, heart rate rises faster in women, while VO2max lags behind that of men. As a result, the female body naturally excels in endurance disciplines, while pure strength and speed remain the male domain.
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Hormones come into play. Estrogen and progesterone promote fat mobilization to provide energy, allowing sustained effort over time and delaying fatigue. On the other hand, testosterone boosts muscle power and explosive strength: a decisive lever in many sports.
Adapting training with knowledge is the key. Mon Coach A Domicile’s advice details how to leverage these differences and stay injury-free, provided one reads the hormonal and anatomical score of each sex correctly.
What Mechanisms Explain Greater Flexibility in Women?
Female flexibility is rooted in a subtle interplay of factors, where hormones and cells orchestrate the score. Estrogen, a pillar of female metabolism, not only regulates the cycle: it promotes the use of fats as fuel and makes tissues more pliable during prolonged efforts. Its presence, fluctuating according to life stages and the cycle, directly influences the structural flexibility of the body.
During the second half of the menstrual cycle, progesterone takes over, stimulating lipid combustion. The result: a body that better taps into its reserves, maintains performance, and keeps a high level of muscle flexibility, even after several intense sessions.
At the cellular level, female adipose tissue stands out for its great capacity to stretch and store energy. Unlike the male pattern, this limits the accumulation of visceral fat (which burdens metabolism) and favors subcutaneous fat, which is much less risky for health. Connective tissues also gain elasticity due to hormonal fluctuations, which explains why the range of motion is, most of the time, more generous in women.
Testosterone in men tips the balance towards strength but comes with less muscle flexibility. These differences, at the intersection of hormonal and structural factors, can be observed both on a mat and in everyday movements.
Sport, Performance, and Injuries: What Flexibility Changes Concretely
From childhood, the greater flexibility of girls is evident. This reality accompanies female athletes throughout their journey: a more contained muscle mass, a higher number of type I fibers, and the ability to sustain effort over time. In practical terms, this translates into better recovery between sessions and finer adaptation during endurance sports.
However, it is important to remain vigilant: joint laxity, typical in women, increases the risk of ligament injuries, particularly in the knee. Anterior cruciate ligament tears are more frequent, as the combination of more pliable connective tissues and hormonal variations makes the joint more vulnerable at certain times in the cycle. Paradoxically, this flexibility protects against muscle tears during wide movements and reduces the frequency of tendon injuries.
In terms of performance, a lower VO2max does not hinder progress over time: many female athletes excel due to intelligent effort management and a metabolism that enhances fat utilization. Physical preparation programs that take the menstrual cycle into account, like those developed by Juliana Antero with EMPOW’HER, optimize recovery and limit injuries.
Another often overlooked aspect: the perception and management of pain. While testosterone dampens the sensation of pain in men, estrogen and certain biases persist in women. Female pain is often underestimated, delaying treatment after an injury. Rather than viewing flexibility as a mere advantage, it is essential to integrate this parameter into any health and sports performance strategy.
There remains this image: at a starting line, two bodies, two mechanics, two stories. And the certainty that in terms of flexibility, each journey deserves to be recognized for its uniqueness, well beyond averages and records.