This one has already begun to reveal it's ugly head in the CrossFit community. Achilles tendon tears and injuries have showed the negative effects of a movement without a deload phase. With normal box jumps the athlete has a moment of rest at the top and at the bottom. With bounding box jumps the athlete never has a deloaded moment and the Achilles takes an absolute beating! This was seen during the 2011 Deadllift/Push Ups/Box Jump workout in which many athletes (a few top athletes) tore their Achilles tendon because of volume and lack of deload. (this is probably a result of 10,000 reps not 1 workout)
I also witnessed an Achilles tear from another high rep box jump workout at the Rumble by the River in 2011. The workout was a 30min AMRAP of DL/Push Ups/Box Jumps and my buddy tore his Achilles with 2 minutes left.
Moral of the Story? Unless someone is looking to compete their really isn't a reason to have your athletes doing anything other than box jumps with step downs during their workouts. (Mark Twight has been preaching this for awhile)Why risk it?
Zitat von Das Schwäbische Grauen
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