Relative exercise intensity of a Krankcycle workout
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Date
2009-08-27Author
Boyer, Blake
Advisor(s)
Gibson, Mark
Brice, Glenn
Porcari, John
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Show full item recordAbstract
Purpose: The purpose of this study was to determine the relative exercise intensity and caloric expenditure of a 30-minute Krankcycle workout. Methods: Twelve physically active subjects age 23.8 � 2.60 years volunteered for the study. Subjects performed three 15-minute practice trials and a maximal exercise test on the SCIFIT upper body ergometer (Tulsa, Oklahoma) to find HRmax, VO2max, and the HR/VO2 relationship. HRmax (179 � 14.0 bpm) was measured with a Polar monitor while VO2max (34.7 � 7.15 ml/kg/min) was measured continuously on an AEI metabolic system (Naperville, Illinois). Subjects then performed a 30-minute instructor-led Krankcycle workout. HR and RPE were measured during the workout. Results: The average HR for the trial was 154 � 10.0 bpm, corresponding to 86 � 4.0 % HRmax. The average VO2 for the workout was 25.0 � 5.90 ml/kg/min, relating to 72 � 10.0 % VO2max. On average subjects burned 9.0 Kcal/min, 269 Kcal total, and spent approximately 90% of the time above 70% HRmax during the trial. Conclusions: It is concluded that a 30-minute Krankcycle workout is of moderate to very high intensity, and is capable of eliciting high enough HR and VO2 values to cause cardiovascular and body composition changes.
Subject
Isometric exercise -- Physiological aspects
Arm exercises -- Physiological aspects