This article and any supplementary material should be cited as follows: Matsuse H, Shiba N, Takano Y, Yamada S, Ohshima H,Tagawa Y. Cycling exercise to resist electrically stimulated antagonist increases oxygen uptake in males: Pilot study. J Rehabil Res Dev. 2013;50(4):545–54. http://dx.doi.org/10.1682/JRRD.2012.04.0067

Slideshow ProjectDOI:10.1682/JRRD.2012.04.0067JSP

Cycling exercise to resist electrically stimulated antagonist increases

oxygen uptake in males: Pilot study

Hiroo Matsuse, MD; Naoto Shiba, MD; Yoshio Takano, MD; Shin Yamada, MD; Hiroshi Ohshima, MD; Yoshihiko Tagawa, PhD

This article and any supplementary material should be cited as follows: Matsuse H, Shiba N, Takano Y, Yamada S, Ohshima H,Tagawa Y. Cycling exercise to resist electrically stimulated antagonist increases oxygen uptake in males: Pilot study. J Rehabil Res Dev. 2013;50(4):545–54. http://dx.doi.org/10.1682/JRRD.2012.04.0067

Slideshow ProjectDOI:10.1682/JRRD.2012.04.0067JSP

• Aim– Compare metabolic cost of :

• Cycling exercise using hybrid training system (HTS) as added resistance (HTC test).

• Unloaded cycling exercise (ULC test).

• Relevance– HTS uses electrically stimulated eccentric antagonist

muscle contractions as resistance to voluntary agonist muscle contractions and may improve muscle hypertrophy and strength.

This article and any supplementary material should be cited as follows: Matsuse H, Shiba N, Takano Y, Yamada S, Ohshima H,Tagawa Y. Cycling exercise to resist electrically stimulated antagonist increases oxygen uptake in males: Pilot study. J Rehabil Res Dev. 2013;50(4):545–54. http://dx.doi.org/10.1682/JRRD.2012.04.0067

Slideshow ProjectDOI:10.1682/JRRD.2012.04.0067JSP

Method• 12 male subjects exercised

on leg cycle ergometer. – After 5 min rest and 5 min

warm up, they performed ULC or HTC for 5 min.

– Steady state of oxygen uptake (VO2), carbon dioxide output (VCO2), expired ventilation (VE), respiratory exchange ratio (RER), and heart rate (HR) were measured.

Hamstring was stimulated during knee extension and quadriceps was stimulated during knee flexion. Subjects pedaled against force generated by electrically stimulated antagonist.

This article and any supplementary material should be cited as follows: Matsuse H, Shiba N, Takano Y, Yamada S, Ohshima H,Tagawa Y. Cycling exercise to resist electrically stimulated antagonist increases oxygen uptake in males: Pilot study. J Rehabil Res Dev. 2013;50(4):545–54. http://dx.doi.org/10.1682/JRRD.2012.04.0067

Slideshow ProjectDOI:10.1682/JRRD.2012.04.0067JSP

Results

• VO2, VCO2, VE, and HR:– Significantly greater during HTC than ULC.

• Relative VO2:– During ULC: 16.7% ± 2.1% of peak VO2.

– During HTC: 21.1% ± 3.4% of peak VO2.

• RER:– No significant difference between ULC and HTC.

This article and any supplementary material should be cited as follows: Matsuse H, Shiba N, Takano Y, Yamada S, Ohshima H,Tagawa Y. Cycling exercise to resist electrically stimulated antagonist increases oxygen uptake in males: Pilot study. J Rehabil Res Dev. 2013;50(4):545–54. http://dx.doi.org/10.1682/JRRD.2012.04.0067

Slideshow ProjectDOI:10.1682/JRRD.2012.04.0067JSP

Conclusion

• Findings indicate that combined application of volitional contractions and electrical stimulation could lead to greater increase in metabolic cost.

• HTS seems to be applicable as a resistance of motion.