The Claim
External foot rotation (toes-out) during submaximal plantarflexion is associated with shorter resting lengths of the Achilles tendon subtendons compared to internal foot rotation (toes-in), suggesting that horizontal foot positioning alters the baseline structural configuration of the tendon prior to muscle activation.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Turning your toes outward while doing calf exercises makes the Achilles tendon sit at a shorter resting length compared to turning them inward. This means the way you position your feet horizontally can change the tendon's natural shape before you even start moving, which might affect how weight is distributed when you walk or run.
See the scientific wording
When performing submaximal plantarflexion contractions, externally rotating the foot (toes-out) is associated with shorter resting lengths of the Achilles tendon subtendons compared to internally rotating the foot (toes-in), indicating that horizontal foot positioning directly influences the baseline structural configuration of the tendon before muscle activation occurs, which may have implications for load distribution during daily activities.
What the research says
1 studyThe study found that pointing your toes outward makes the tendons at rest slightly shorter than pointing them inward. This shows that how you position your feet changes the natural length of your Achilles tendon before you even start moving.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.