The Claim
Daily static stretching of the ankle plantar flexors for one hour over a six-week period increases ankle dorsiflexion range of motion by up to 27.3% in healthy adults, a gain mediated primarily by enhanced pain tolerance and serial sarcomere addition rather than muscle shortening.
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.
Stretching your calf muscles for an hour every day for six weeks can make your ankle bend up to 27% further. This happens because your brain gets used to the discomfort and your muscles actually grow new parts, not just because they get looser.
See the scientific wording
Daily static stretching of the ankle plantar flexors for one hour over six weeks improves ankle dorsiflexion range of motion by up to 27.3%, primarily through increased pain tolerance and potential serial sarcomere addition rather than solely muscle shortening, highlighting the neural and structural components of flexibility gains in healthy adults.
What the research says
1 studyStudy: Influence of Long-Lasting Static Stretching on Maximal Strength, Muscle Thickness and Flexibility
Stretching your ankle muscles for an hour a day over six weeks significantly improved your flexibility by about 27%, largely because the muscles grew longer and your nervous system adapted, not just because the muscles became less stiff.
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.