The Claim
In five semi-professional Australian Rules football players, the application of heavy wearable resistance (6% increase in hip moment of inertia) to the posterior thighs was associated with altered pelvic orientation and increased hip extension during the early acceleration phase of sprinting.
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.
When heavy resistance is added to the back of the thighs of semi-professional Australian Rules football players, their pelvis position changes and their hip extension increases during the initial sprinting phase.
See the scientific wording
In five semi-professional Australian Rules football players, heavy wearable resistance (6% increase in hip moment of inertia) applied to the posterior thighs was associated with altered pelvic orientation and increased hip extension during the early acceleration phase of sprinting, suggesting this loading configuration may influence lower limb kinematics in a way that could be leveraged for technical coaching.
When heavy weight is added to the back of the thighs, it makes the legs harder to swing forward during sprinting. The body responds by pushing the hip back harder to keep the center of mass balanced over the feet, which straightens the pelvis and increases how far the hip extends with each step.
What the research says
1 studyWhen heavy weights were strapped to the backs of the thighs of five football players, they naturally leaned forward more and pushed their hips back harder during the first few steps of sprinting — exactly what the claim said would happen.
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.