During a maximal sprint, a footballer's Achilles tendon handles up to 12 times their body weight. 🔬 Football is an asymmetrical sport. Most players have a dominant kicking leg and a planted stabilizing leg, and over tens of thousands of repetitions, the tissues of the lower limb adapt in remarkable ways. Look at the two most heavily loaded structures in a footballer's leg. The patellar tendon connects the quadriceps to the tibial tuberosity. The Achilles (calcaneal) tendon attaches the gastrocnemius and soleus to the calcaneus, your heel bone. During a maximal sprint, that Achilles can be loaded 6 to 12 times body weight. How does it survive that? Extraordinary collagen architecture. When you sprint, the Achilles stretches as your foot loads, then recoils to launch the next step. That elastic return is a big reason elite athletes look so effortless at top speed. And like muscle, tendons are living tissues that adapt to training. Years of progressive loading stimulate collagen synthesis and remodeling, increasing the tendon's cross-sectional area and stiffness, making it stronger and better able to tolerate the massive forces of sprinting, jumping, and cutting. 👉 Comment "MUSCULAR" and we'll send you 30% off our Exploring the Muscular System eBook this month only. #tendons #achillestendon #anatomy #humanbody #cadaverlab #patellartendon #collagen #anatomyandphysiology #physiology #medstudent #sportsscience #musculoskeletal #football #exercisephysiology #iohaanatomy
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