effects of neuromuscular electrical stimulation of various frequencies and intensities of energy expenditure
abstract
the purpose o f this study was to determine the effects o f neuromuscular
electrical stimulation (nmes) o f various intensities (25, 50,75, and 100 ma) and
frequencies (8, 12,20, 50 hz) on energy expenditure o f the knee extensor muscles
(kem). fourteen male university 世界杯2022赛程表淘汰赛
between 20 and 24 years o f age were
submitted to 5 min o f each intensity at each frequency during nmes on different
days with the use o f a portable stimulator (respond h, empi; impulse width of
300 microseconds; duty cycle: 55s on and 2s off) and adhesive electrodes
(pals plus™, empi). oxygen uptake was measured in the supine position at rest
and during nmes o f both kem. energy expenditures (kcal. hr-1 .kg o f kem -1)
o f the four frequencies o f each intensity (mean : 25 ma= 1.8; 50 ma= 7.8; 75
ma= 21.6; 100 ma= 26.3) were not significantly different (p>0.05) and that of
the different intensities of each frequency were significantly different (p<0.05-
p<0.001) except in 50 hz between 75 and 100 ma (p>0.05). the highest energy expenditure (28.1 kcal. hr-1 .kg o f kem-1) was observed at a stimulation
frequency o f 8 hz (p>0.05) at an intensity o f 100 ma.
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