Submaximal exercise

Fatigue in Intact Skeletal Muscle of Human Subjects During Submaximal Exercise 253... 

FATIGUE IN INTACT SKELETAL MUSCLE OF HUMAN SUBJECTS DURING SUBMAXIMAL EXERCISE... 

This categorization of relative whole body intensity is also valuable in distinguishing between high intensity and submaximal exercise. Exercise intensities or power outputs at or above 100% VO2 max are generally considered high intensity. These intensities require muscle contractions that generate -40-100% of the force... 

Bergstrom et al. (1967) examined the relationship between initial muscle glycogen content and the capacity for prolonged submaximal exercise. Subjects cycled to exhaustion at 75% VO2 max on three occasions, each separated by three days. 

Complete blood counts were normal in four individuals overcome by unknown concentrations of hydrogen sulfide gas in a pelt room (Audeau et al. 1985). Percent hemoglobin saturation was unchanged by inhalation of either 5 ppm hydrogen sulfide by volunteers during 30 minutes of submaximal exercise (Bhambhani et al. 1994), or 10 ppm hydrogen sulfide during two 30 minute sessions of submaximal exercise (Bhambhani et al. 1997). 

Brown KA, Heller GV, Landin RS, Shaw LJ, Beller GA, Pasquale MJ et al. Early dipyridamole (99m)Tc-sestamibi single photon emission computed tomographic imaging 2 to 4 days after acute myocardial infarction predicts in-hospital and postdischarge cardiac events comparison with submaximal exercise imaging. Circulation 1999 100 2060-2066... 

Plyley MJ, Shepard RJ, Davis GM, Goode RC. Sleep deprivation and cardiorespiratory function—influence of intermittent submaximal exercise. Eur J Appl Physiol 1987 56 338-344. 

Thus, this study in sickle cell disease patients appeared to support the findings of a parallel study in normal human volunteers, where it was concluded that HBOC-201 apparently supported submaximal exercise capacity in a manner quite similar to autologous blood, but at lower pulse rate. Cl, and lactate concentration. The results of both studies suggest that the provision of acellular Hb may be an efficient way to deliver oxygen to the tissues. 

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