http://fitness.mercola.com/ Internationally renowned natural health physician and Mercola.com founder Dr. Joseph Mercola and Darin Steen demonstrate ab twist with med ball on bench.
Please look into McGill's research regarding loaded flexion and rotation exercises. Do you realize the is only 13 degrees of rotation available from the lumbar spine? I like the Mercola website but the exercise science needs some drastic updating.
sorry but not a fan of abs work out when feet stuck under something to hold them u. Simply because it works out alot more the psoas and nother muscles that has a similar function, instead of your real adbominal muscles...6 pack, obliques etc.
Please look into McGill's research regarding loaded flexion and rotation exercises. Do you realize the is only 13 degrees of rotation available from the lumbar spine? I like the Mercola website but the exercise science needs some drastic updating.
optimumperformance 2 years ago
awesomeness
marpoq 2 years ago
sorry but not a fan of abs work out when feet stuck under something to hold them u. Simply because it works out alot more the psoas and nother muscles that has a similar function, instead of your real adbominal muscles...6 pack, obliques etc.
misseptember 2 years ago
It's helpful seeing a non expert doing the exercises too.
888zzz 2 years ago