Article

A hybrid training system (HTS) has been developed as the combined application of
electrical stimulation (ES) and volitional contractions (VC), using electrically
stimulated eccentric antagonist muscle contractions as a resistance to voluntary
agonist muscle contractions. The purpose of the present study is to compare the
metabolic cost between cycling exercise using HTS as added resistance (HTC) and
unloaded cycling exercise (ULC). Twelve male subjects exercised on a leg cycle
ergometer. After 5 min rest and 5 min warm up, they performed ULC for 5 min or
HTC for 5 min. During rest and each exercise, the steady state of oxygen uptake
(VO2), carbon dioxide output (VCO2), expired ventilation (VE), respiratory
exchange ratio (RER), and heart rate (HR) were measured. The values of VO2, VCO2,
VE, and HR during HTC were significantly greater than during ULC (p < 0.05).
Relative VO2 was 16.7% +/- 2.1% of peak VO2 during ULC, and it was 21.1% +/- 3.4%
during HTC. However, there was no significant difference in RER between ULC and
HTC. These findings indicate that the combined application of VC and ES could
lead to a greater increase in metabolic cost. HTS seems to be applicable as a
resistance of motion.

Langue : ANGLAIS