A Novel Apparatus Measuring Knee Flexor Strength During Various Hamstring Exercises: A Reliability and Retrospective Study

This is the latest study by Jack Hickey and colleagues published a few weeks ago. Jack is part of the Hamstring Injury Group in Australia headed by Dr Anthony Shield and David Opar. Their group have grown and they collectively have produced a major bulk of the latest hamstring injury research in recent years.

Open access: NO

Date: Late Oct/Early Nov 2017 (can’t seem to find the exact date)

The most common types of knee flexor strength testing in hamstring strain injuries include isokinetic dynanometry, and the more recent nordbord which measures mainly eccentric strength by performing the nordic hamstring exercise. Dr Anthony Shield is also one of the inventors of the nordbord, which provides football clubs a more mobile and practical equipment compared to isokinetic dynanometry.

This new apparatus created by Jack and colleagues also employs similar principles to the nordbord as far as I understand, by using load cells on something like a suspension trainer equipment, and it measures forces through these load cells, which the nordbord also uses through the leg hooks on the equipment. They have named this new apparatus the HamSling. And of course it’s much easier to understand by looking at a picture of it (I found this picture shared by Jack on twitter):


You can see the person in the picture performing a single leg eccentric slider exercise on the HamSling.

Unfortunately this study is not open access, however by listening to Jack talk about it in the podcast and video presentation, you can get quite a good idea of their findings. And we should be expecting a lot more cool research from Jack and his team soon.

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