How to Do Quad Extensions

[frankenstein2010]

i would like to thank this instructor on this video...you are so going to help my girl on getting in shape.....you instructions are right on the money and you body helps her get motivated to want to better her health most imporant and also better her life......thank you

[arabicbelly]

i learnt a lot from this woman, Thanks!

[TheDeviousDeception]

My core is tight, m'kay! Love this woman :)

[gc3k]

will it cause injury or something? or is it just a waste of time

[theperez1991]

If you tore your A.C.L. NEVER do this 

[ANTIHERO801]

if your an athlete dont do this exercise!!! if you just want good looking quads go for it

[JacksonMichaelBAD]

@ANTIHERO801

why shouldnt we do this if were athletes?

[stevenclarkslc]

@JacksonMichaelBAD because your leg shouldnt be loaded like that. there is no natural exercise that would ever put that same load onto your leg.

[d1kkesh1t]

thnx for explaining

[jbuiltman]

Another no no exercise! Why? There is no where in nature where we load the distal portion of the Tib/Fib for bio mechanics (human movement). As the load increases so does the shear force of the platella across the condyles or proximal portion of the Tib/Fib and wears away the back side of the platella (knee cap). Alternatives for strong quads? Single Leg Squats, Single Leg Wall Squat Extensions, Single Leg Presses, Bilateral Dumbell Squats or Bilateral Leg Presses.

[alex6996able]

@jbuiltman I agree with your very informative comment and doing those exercises you mentioned are bio-mechanically correct and they incorporate more muscle due to compound movements.

[nuyawk55]

You do a very good job explaining how to do these exercises in your videos.

[DempseyDonovanKaka]

hot legs

[alidubya]

@DempseyDonovanKaka yeah, very manly

[Sicj]

Your tips are very helpful thank you