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On a t.E.N.S. Machine (used in physiotherapy) what is the significance of the mhz and safety rating?
2 doctors weighed in

Dr. Robert Carroll
Nuclear Medicine
1 doctor agrees
In brief: Pain or muscles
Tens is for blocking pain, ems is for stimulating muscles.
Tens applied at high frequency (>50 hz) with an intensity below motor contraction or low frequency (<10 hz) with an intensity that produces motor contraction. Benefit of tens for pain is controversial.

In brief: Pain or muscles
Tens is for blocking pain, ems is for stimulating muscles.
Tens applied at high frequency (>50 hz) with an intensity below motor contraction or low frequency (<10 hz) with an intensity that produces motor contraction. Benefit of tens for pain is controversial.
Dr. Robert Carroll
Dr. Robert Carroll
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