Int J Sports Med 2008; 29(8): 624-629
DOI: 10.1055/s-2007-989262
Physiology & Biochemistry

© Georg Thieme Verlag KG Stuttgart · New York

Oxygen Consumption in Nonexercising Muscle after Exercise

T. Nagasawa1
  • 1Integrated Arts and Science, Okinawa National College of Technology, Okinawa, Japan
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accepted after revision September 3, 2007

Publikationsdatum:
14. November 2007 (online)

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Abstract

Little is known about the effect of exercise intensity on post-exercise oxygen consumption in nonexercising muscle. This study examined the effect of exercise intensity on muscle oxygen consumption (V˙O2mus) in nonexercising forearm flexor muscles (nonexV˙O2mus) after cycling exercise. Eight healthy male subjects performed 20 min of cycling exercise at 30 %, 50 %, and 70 % of maximal oxygen consumption (%V˙O2max) on separate days. The nonexV˙O2mus values at rest, at the end of exercise, and during recovery after exercise were measured by near-infrared spectroscopy. V˙O2mus was determined using the rate of decrease in oxygenated hemoglobin during arterial occlusion. The nonexV˙O2mus at the end of exercise significantly increased by 1.3 ± 0.1, 2.0 ± 0.3, and 2.2 ± 0.3-fold over resting values at 30 %, 50 %, and 70 % V˙O2max, respectively. NonexV˙O2mus returned to the resting value after 3 – 5 min of recovery and then showed no significant change for 120 min after exercise at all exercise intensities. NonexV˙O2mus at the end of exercise at 70 % V˙O2max was significantly higher than that after exercise at 30 % V˙O2max. These results show that 20 min of cycling exercise induced an increase in nonexV˙O2mus and that higher intensity exercise produces a larger increase in nonexV˙O2mus after exercise.

References

Dr. Ph.D. Takeshi Nagasawa

Okinawa National College of Technology
Integrated Arts and Science

905 Henoko

Nago Okinawa 905-2192

Japan

Telefon: + 81 9 80 55 42 46

Fax: + 81 9 80 55 40 12

eMail: nagasawa@okinawa-ct.ac.jp