Medicine and science in sports and exercise
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Med Sci Sports Exerc · Jan 2008
Impaired systemic oxygen extraction at maximum exercise in pulmonary hypertension.
To determine the relative contributions of the Fick principle variables to impaired exercise tolerance in pulmonary arterial hypertension compared with pulmonary venous hypertension. ⋯ Maximum systemic oxygen extraction is impaired in pulmonary arterial versus pulmonary venous hypertension and contributes to the exercise limit.
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Med Sci Sports Exerc · Jan 2008
Seven intermittent exposures to altitude improves exercise performance at 4300 m.
The purpose of this study was to determine whether seven intermittent altitude exposures (IAE), in combination with either rest or exercise training, improves time-trial exercise performance and induces physiologic adaptations consistent with chronic altitude adaptation at 4300 m. ⋯ Our findings indicate that 7 d of IAE, in combination with either rest or exercise training, improves time-trial cycle exercise performance and induces physiologic adaptations during constant-work rate exercise consistent with chronic altitude adaptation at 4300 m.