Abstract
[Purpose] We instituted exercise loads by repeated stand-up exercise and bicycle ergometer, and using the anaerobic threshold determined with a bicycle ergometer, we examined the relationship with exercise intensity of both methods. [Subjects and Method] The subjects were 29 healthy young males, (average age 19.9 years). We took measurements of items reflecting cardiopulmonary function from at rest to the end of the exercise. The frequency of stand-ups was set from 6 to 30 per min, and the exercise time was 3 min. The anaerobic threshold was determined on a bicycle with a ramped load protocol. For the analysis, the oxygen uptake volume and heart rate at each stand-up frequency was determined as a ratio of the anaerobic threshold at each value. [Results] Oxygen uptake volume and heart rate in stand-ups from 6 to 30 times per min ranged from 45.9 -119.8% and from 67.6-106.9% of the anaerobic threshold, respectively. [Conclusion] A stand-up frequency of 24 to 30 per min can be considered an exercise intensity approximately equivalent to the anaerobic threshold.
