Strakke billen=goed voor lage rug, heupen en knieÃ«n….. Lijkt me De definitie van WinWin.
Gluteal progression for back, hip and knee health
Weak gluteal muscles can be blamed for many low back, hip and knee pain/injuries. Without the muscular support, the back, hip and knee are subject to increased loads and excessive motion leading to friction and wear and tear. The 3 gluteal muscles: maximus, medius and minimus assist in controlling the trunk and the leg as it is loaded during foot contact to the ground as in walking, running, jumping, going up/down stairs, as well as moving from a sit to a stand or bending.
The full article