Actually im gonna throw the whole isometric stuff into this boiling pot!!
basically what im going to refer to is the use of EMS, no one can deny the strength gains and the sprint cross over achieved from this when used correctly.
This is obvioulsy not full range (just like the quarter squat) achieves a full muscle contrction (just like the QS)
You need a full hard contraction to ensure all fibre types are hit, and this is very raely achived with a full squat, as already stated certain ranges are harder then others. whereas with a ‘heavy’ partial and it has to be heavy, this is negated as all the fibres are activated.
so in essence what im elluding to is these can be used in place of EMS.