Abstract
Muscle O2 dynamics during ramp cycling exercise were compared between aerobic capacity-matched elderly men (n=8, age 65±2 years) and women (n=8, age 66±3 years). Muscle O2 saturation (SmO2) and relative change in deoxygenated (Δdeoxy-Hb) and total hemoglobin concentration (Δtotal-Hb) were monitored continuously during exercise in the vastus lateralis (VL) and gastrocnemius medialis (GM) by near infrared spatial resolved spectroscopy. SmO2 was significantly higher during exercise in women than in men in VL, but not in GM. In VL, Δdeoxy-Hb and Δtotal-Hb were significantly higher in men than in women, especially during high intensity exercise. However, no significant difference was observed in Δdeoxy-Hb or Δtotal-Hb in GM. Sex-related differences in muscle deoxygenation response may be heterogeneous among leg muscles in elderly subjects.
| Original language | English |
|---|---|
| Title of host publication | Advances in Experimental Medicine and Biology |
| Publisher | Springer New York LLC |
| Pages | 55-61 |
| Number of pages | 7 |
| Volume | 876 |
| ISBN (Print) | 9781493930227 |
| DOIs | |
| Publication status | Published - 2016 |
| Event | 42nd Annual Meeting of International Society on Oxygen Transport to Tissue - London, United Kingdom Duration: 2014 Jun 28 → 2014 Jul 3 |
Publication series
| Name | Advances in Experimental Medicine and Biology |
|---|---|
| Volume | 876 |
| ISSN (Print) | 00652598 |
| ISSN (Electronic) | 22148019 |
Other
| Other | 42nd Annual Meeting of International Society on Oxygen Transport to Tissue |
|---|---|
| Country | United Kingdom |
| City | London |
| Period | 14/6/28 → 14/7/3 |
Fingerprint
Keywords
- Aging
- Cycling exercise
- Muscle oxygen dynamics
- Near infrared spectroscopy
- Regional difference
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Medicine(all)
Cite this
Sex-related difference in muscle deoxygenation responses between aerobic capacity-matched elderly men and women. / Takagi, Shun; Kime, Ryotaro; Niwayama, Masatsugu; Osada, Takuya; Murase, Norio; Sakamoto, Shizuo; Katsumura, Toshihito.
Advances in Experimental Medicine and Biology. Vol. 876 Springer New York LLC, 2016. p. 55-61 (Advances in Experimental Medicine and Biology; Vol. 876).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Sex-related difference in muscle deoxygenation responses between aerobic capacity-matched elderly men and women
AU - Takagi, Shun
AU - Kime, Ryotaro
AU - Niwayama, Masatsugu
AU - Osada, Takuya
AU - Murase, Norio
AU - Sakamoto, Shizuo
AU - Katsumura, Toshihito
PY - 2016
Y1 - 2016
N2 - Muscle O2 dynamics during ramp cycling exercise were compared between aerobic capacity-matched elderly men (n=8, age 65±2 years) and women (n=8, age 66±3 years). Muscle O2 saturation (SmO2) and relative change in deoxygenated (Δdeoxy-Hb) and total hemoglobin concentration (Δtotal-Hb) were monitored continuously during exercise in the vastus lateralis (VL) and gastrocnemius medialis (GM) by near infrared spatial resolved spectroscopy. SmO2 was significantly higher during exercise in women than in men in VL, but not in GM. In VL, Δdeoxy-Hb and Δtotal-Hb were significantly higher in men than in women, especially during high intensity exercise. However, no significant difference was observed in Δdeoxy-Hb or Δtotal-Hb in GM. Sex-related differences in muscle deoxygenation response may be heterogeneous among leg muscles in elderly subjects.
AB - Muscle O2 dynamics during ramp cycling exercise were compared between aerobic capacity-matched elderly men (n=8, age 65±2 years) and women (n=8, age 66±3 years). Muscle O2 saturation (SmO2) and relative change in deoxygenated (Δdeoxy-Hb) and total hemoglobin concentration (Δtotal-Hb) were monitored continuously during exercise in the vastus lateralis (VL) and gastrocnemius medialis (GM) by near infrared spatial resolved spectroscopy. SmO2 was significantly higher during exercise in women than in men in VL, but not in GM. In VL, Δdeoxy-Hb and Δtotal-Hb were significantly higher in men than in women, especially during high intensity exercise. However, no significant difference was observed in Δdeoxy-Hb or Δtotal-Hb in GM. Sex-related differences in muscle deoxygenation response may be heterogeneous among leg muscles in elderly subjects.
KW - Aging
KW - Cycling exercise
KW - Muscle oxygen dynamics
KW - Near infrared spectroscopy
KW - Regional difference
UR - http://www.scopus.com/inward/record.url?scp=84958569022&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84958569022&partnerID=8YFLogxK
U2 - 10.1007/978-1-4939-3023-4_7
DO - 10.1007/978-1-4939-3023-4_7
M3 - Conference contribution
SN - 9781493930227
VL - 876
T3 - Advances in Experimental Medicine and Biology
SP - 55
EP - 61
BT - Advances in Experimental Medicine and Biology
PB - Springer New York LLC
ER -