“You’ll know im­me­di­ately if your work­out is too hard or too easy.”

Golf Digest (South Africa) - - The Golf Life -

have sen­sors that de­tect move­ment and in­di­cate how much force, power and speed are be­ing gen­er­ated with each rep­e­ti­tion of an ex­er­cise. The com­pa­nies also sell ac­ces­sories such as belts and vests that you wear to track e ort for ply­o­met­ric ex­er­cises like box jumps.

An­other VBT de­vice is Bar Sen­sei ($ 395, as­sess2per­form.com), though it’s lim­ited to bar­bell ex­er­cises. The same com­pany also de­vel­oped a group of medicine balls – known as Bal­lis­tic Balls ($395 each) – that have sen­sors in­side that mea­sure e ort when throw­ing them.

The goal, Shear says, is to move weights or per­form ex­er­cises at a ve­loc­ity range of one me­tre to 1½ me­tres per sec­ond. Move faster, and you’re not train­ing hard enough, so you need to in­crease the load. Move slower, and you’re over­load­ing – work­ing with too much weight – and prob­a­bly not im­prov­ing your power out­put.

“Some days you can lift heav­ier weights than oth­ers, mak­ing it hard to know if you’re train­ing in the op­ti­mal range,” Shear says. “But VBT is self-reg­u­lat­ing.You’ll know im­me­di­ately if your work­out is too hard or too easy.” –

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