The study investigated musculotendinous adaptations in high and low performance triathletes compared to a control group, using ultrasonography to analyze the Achilles tendon and triceps surae muscles. Only the pennation angle of the medial gastrocnemius muscle showed statistically significant differences between the groups (p = 0.002), with higher values in the control group compared to the triathletes. The pennation angle directly influences the capacity to generate force and muscular endurance, standing out for the greater cross-sectional area in efficiently packed muscle fibers. This study suggests that these adaptations may influence performance and predisposition to injuries in triathletes.
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Diniz et al. (2024) studied this question.
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