“The idea of bringing the body into an environment that challenges stability and balance is on the up rise,” said Michigan-based trainer Derek Mikulski. “Shifting resistance constantly challenges the body’s center of mass so the core has to work harder.”
Mikulski is the creator of a new balance device called ActivMotion Bar. It looks like a body bar but is hollow and filled with steel balls that shift back and forth when moved.
It is designed so that gripping, steadying and moving the bars, which come in weights from four and one-half to 18 pounds, (two to eight kilograms), in basic moves from curls to lunges will boost calorie burn, core strength and balance.
Several U.S. fitness chains, including Life Time Fitness and Powerhouse Gym, have introduced the bar, which was rolled out earlier this year.
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