Two of these and you're good to go:
Rogue Games Box - 3 in 1 Wood Plyo Box or
Titan Fitness Plyo Box or Sorinex makes (I have) and I'm sure there are others.
User Weight Capacity
Fitness Equipment provides a User Weight Capacity Rating for liability reasons.
If an individual pushes the item beyond the User Weight Capacity, the liabilty is assumed by those who purchase it; not the manufacturer.
None of these provide Brands provides the User Weight Capaity of their Boxes.
Titan's "Specification" states the "User Weight Capacity Varies."
Thus one needs to consider the...
Belt Squat Box Loading
As long as thg loading on the Boxes doesn't exceed the User Weight Capacity it works.
Example
If an individual is let's say 180 lbs and is performing a Belt Squat with 180 lb (in the video posted), the total loading is 360 lbs.
That would mean the each Box would need to have an individual User Weight Capacity of 180 lbs, (360 lbs divided by 2).
One needs to know the User Weight Capacity of the Boxes when purchasing and not perform Belt Squat beyond the it.
Belt Squat
The best quads exercise you probably aren't doing!!
www.youtube.com
As per...
Loading weight has two issues. The first is how to load enough weight to get a decent training effect. If you find a solution on loading enough weight, the second problem is how to lift the weight into the proper starting position.
Proper Starting Position
The primary issue with this Belt Squatting Method it is awkard and difficult in climbing up on the Boxes to obtain enough height; it is an accident waiting to happen, espcially with heavy loads.
Recommendations
1) LandMine Belt Squats
I am not a fan of LandMine Belt Squat. With this method the movement pulls you forward; it elicits a different training effect than Belt Squat performed off Boxes or my Ski Power Rack set up.
However, individual should give it a try an see if it works for them.
power rack the lever arm would be a good option
2) Power Rack Lever Arm
The movement pattern on this mimics the LandMine Squat; which I am not a fan of.
However, some individual may find it works for them.
Good Morning Auxilary Deadlift
LandMine and Power Rack Lever Arm Good Morning are a great Auxiliary Deadlift Movement.
It employs the same Ascending Strength Curve and Muscle Involvement of a Deadlift.
3) Loading Pin Belt Squats
Having tried all of the above method and some others, I am a proponet Belt Squats performed off a Solid Platform with a Loading Pin.
This method allows individual to place more of the loading on the upper part of the Quads, Glutes and Hamstrings; replicating a Powerlifting Low Bar Squat more so than the LandMine or Power Lever Rack Arm Squat.
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