Evaluation of Exercise Capacity by Expired Gas during Cardiopulmonary Exercise Testing

• Published in: Rigaku ryoho kagaku Vol. 10; no. 2; pp. 93 - 95
• Main Authors: NARA, ISAO, FUJIMURA, MASAHIKO
• Format: Journal Article
• Language: English
• Published: The Society of Physical Therapy Science 1995
• Subjects: anaerobic threshold; cardiopulmonary exercise testing; maximal oxygen uptake (VO2max)
• ISSN: 1341-1667; 2434-2807; 2434-2807
• DOI: 10.1589/rika.10.93

In order to confirm the reliability of evalution of exercise capacity by analyzing expired gas, 17 healthy university students performed the cardiopulmonary exercise testing. Followed by a 2-min rest and 2-min warm-up (30 watt/min), subjects underwent the bicycle ergometer exercise with ramp loading of 15 watt/min. During the exercise, oxygen uptake (VO2), carbon dioxide production (VCO2) and minute ventilation (VE) breath by breath were continously measured. Anaerobic threshold (AT) was also determined by the Wasserman's V-slope method during the exercise. There was a significant correlation between VO2max and AT, and between HRmax and HRAT. AT was found 56.2% of VO2max. These results suggest that evaluation of exercise capacity by expired gas during cardiopulmonary exercise testing is useful.