Jorge Diego Sánchez

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The effects on heart rate, oxygen uptake, and pulmonary ventilation of muscular exercises, including both dynamic contractions, either simple or combined, were studied in 4 male subjects, aged 21 to 23 years. The dynamic work consisted in cycling on an ergometric bicycle at three power levels: 40, 80, and 100 W. The static work consisted in pushing against,(More)
Twelve subjects (six men, six women) were studied in resting conditions for simple breath holding (BH) in either the supine or upright position. Ventilation (V T, $$\dot V$$ , f r) heart rate (f c) and arterial blood pressure (ABP) were recorded or measured in steady state and then transiently during BH and its recovery. Each subject performed seven BH in(More)
The effects on heart rate, blood pressure, and plasma catecholamines (epinephrine, norepinephrine, dopamine) of sustained isometric contraction (SIC) were studied in six women and nine men. Each subject held a tension equivalent to 30% of maximal handgrip strength until exhaustion. There were no significant differences between women and men in the duration(More)
In twelve subjects (six women and six men) the effects of breath holding (BH) were studied during two work levels of dynamic (30 and 50% $$\dot V$$ O2 max) and static (30 and 50% MVC) exercise. Ventilation, heart rate and arterial blood pressure were measured before, during and after BH, performed after 30 s work and after 4 min work. Several criteria were(More)
The activities of lactic dehydrogenase (LDH), hexokinase (HK), citrate synthetase (CS), and 3-hydroacyl CoA dehydrogenase (HAD), were measured in Soleus and extensor digitorum longus (EDL) muscles of four different age groups of male Wistar rats. Young rats (3 months) and old rats (24 months) were trained during 12 weeks by a 3 days a week running exercises(More)
BACKGROUND This study retrospectively compared the effectiveness of vagus nerve stimulation (VNS) therapy among a constant cohort of patients in the patient outcome registry, which systematically monitors outcomes of patients receiving VNS therapy. Patients in the study had pharmacoresistant seizures for 6 years or less (early treatment group) or more than(More)
The concentration of creatine phosphate (CrP), ATP, ADP, AMP and glycogen were measured in extensor digitorum longus (EDL) and in quadriceps muscles of 3, 6, 24, and 27 months old male Wistar rats groups. Young (3 months) and old (24 months) rats were trained for 12 weeks, 3 days a week, with running exercise session. Each training session was of 2 h. In(More)
Platypnea-orthodeoxia is a rare syndrome characterized by dyspnea induced by the upright position and relieved by supine position and an arterial deoxygenation increased by the upright position which improves during recumbency. In many cases, this syndrome has been associated with patent foramen ovale and right-to-left shunt. Several anatomical factors that(More)
AIM To identify risk factors associated with hepatocellular carcinoma (HCC), describe tumor characteristics and treatments pursed for a cohort of individuals with nonalcoholic steatohepatitis (NASH) cirrhosis. METHODS We conducted a retrospective case-control study of a well-characterized cohort of patients among five liver transplant centers with NASH(More)
Maximum oxygen uptake $$\left( {\dot V_{{\text{O}}_{{\text{2max}}} } } \right)$$ was measured directly and predicted from cardiac frequency measurements in 54 healthy Chilean industrial workers aged 20 to 55 years, together with assessment of their dietary intake, body compositon and blood chemistry. Measurement of $$\dot V_{{\text{O}}_{\text{2}} } $$ was(More)