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Titolo:
Validity of NIR spectroscopy for quantitatively measuring muscle oxidativemetabolic rate in exercise
Autore:
Sako, T; Hamaoka, T; Higuchi, H; Kurosawa, Y; Katsumura, T;
Indirizzi:
Tokyo Med Univ, Dept Prevent Med & Publ Hlth, Shinjuku Ku, Tokyo 1608402, Japan Tokyo Med Univ Tokyo Japan 1608402 th, Shinjuku Ku, Tokyo 1608402, Japan
Titolo Testata:
JOURNAL OF APPLIED PHYSIOLOGY
fascicolo: 1, volume: 90, anno: 2001,
pagine: 338 - 344
SICI:
8750-7587(200101)90:1<338:VONSFQ>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
HUMAN SKELETAL-MUSCLE; MAGNETIC-RESONANCE SPECTROSCOPY; NEAR-INFRARED SPECTROSCOPY; IN-VIVO; HUMAN CALF; OXYGENATION; RECOVERY; CONSUMPTION; RESPIRATION; WORKING;
Keywords:
near-infrared continuous wave spectroscopy; muscle metabolism; phosphorus-31-magnetic resonance spectroscopy;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
31
Recensione:
Indirizzi per estratti:
Indirizzo: Sako, T Tokyo Med Univ, Dept Prevent Med & Publ Hlth, Shinjuku Ku, 6-1-1 Shinjuku,Tokyo 1608402, Japan Tokyo Med Univ 6-1-1 Shinjuku Tokyo Japan 1608402 1608402, Japan
Citazione:
T. Sako et al., "Validity of NIR spectroscopy for quantitatively measuring muscle oxidativemetabolic rate in exercise", J APP PHYSL, 90(1), 2001, pp. 338-344

Abstract

The purpose of this study was to examine the validity of the quantitative measurement of muscle oxidative metabolism in exercise by near-infrared continuous-wave spectroscopy (NIRcws). Twelve male subjects performed two bouts of dynamic handgrip exercise, once for the NIRcws measurement and once for the P-31-magnetic resonance spectroscopy (MRS) measurement as a standard measure. The resting muscle metabolic rate (RMRmus) was independently measured by P-31-MRS during 15 min of arterial occlusion at rest. During the first exercise bout, the quantitative value of muscle oxidative metabolic rateat 30 s postexercise was evaluated from the ratio of the rate of oxyhemoglobin/myoglobin decline measured by NIRcws during arterial occlusion 30 s after exercise and the rate at rest. Therefore, the absolute values of muscleoxidative metabolic rate at 30 s after exercise [(V) over dotO(2NIR(30))] was calculated from this ratio multiplied by RMRmus. During the second exercise bout, creatine phosphate (PCr) resynthesis rate was measured by P-31-MRS at 30 s postexercise [Q((30))] under the same conditions but without arterial occlusion postexercise. To determine the validity of NIRcws, (V) overdotO(2NIR(30)) was compared with Q(,,,. There was a significant correlation between (V) over dotO(2NIR(30)), which ranged between 0.018 and 0.187 mM ATP/s, and Q((30)), which ranged between 0.041 and 0.209 mM ATP/s (r = 0.965, P < 0.001). This result supports the application of NIRcws to quantitatively evaluate muscle oxidative metabolic rate in exercise.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 09:34:56