Artículos de revistas
Bioenergetic studies in residents at high altitude (2,850 m) with asymptomatic Chagas'disease
Fecha
1985Institución
Resumen
Summary - Cardiovascular response and working capacily were studied at rest and
during a 125 W exercise ¡n residents at h¡gh alt¡tude (2,850 m), compar¡ng 2l asymptomatic
(normal EKG) bul T. cruzi ¡nfected subiects (positive serology) to 2l healty controls (negative
serology). Ages, anthropometr¡c, nutrit¡onal. and hematological data were similar in the two
groups (P > 0.05), indicating the homogeneily ol lhe stud¡ed population. Cardiac ax¡s, heart
rales, and oxygen uptakes, were not different between the two groups, at rest and/or during
exercise (P > 0.05). At rest, d¡astolic and systolic pressures were s¡gnilicantly lower in the
inlected group than ¡n the control group (P < 0.05). During exercise and recovery at the
1st and slh min, diastol¡c pressure was also significantly lower in inlected palients than
in conlrol group whereas syslolic pressure was s¡gnif¡canlly lower only dur¡ng recovery al
Sth min. The calculaled VO, max were similar ¡n the lwo groups, indicating a normal working
capacity for the stud¡ed asymptomatic infected pat¡ents. The altitude does not seem to
aflecl the responses to exerc¡se, since the results obtained at h¡gh altitude were similar to
those oblained at sea level (Macedo et al., 1973).