摘要：Ferrara CM, Bennett L, Chenette E, Diaz Contreras C, LeBlanc J, Martin A, Muise K, McLaughlin K, Sinclair A, Vraibel J. SelfSelected Exercise Intensity using Two Fitness Apps. JEPonline 2015;18(2):1-7. The purpose of this study was to evaluate the selfselected exercise intensity of two fitness apps: (a) 7 Minutes to Health (7MH); and (b) Cardio Free (CF). Eleven subjects (9 men and 2 women) completed a VO2 max test and two exercise bouts using each of the exercise apps. Oxygen consumption (VO2) and heart rate (HR) were used to determine the intensity of exercise. Paired t-tests were performed to compare VO2 and HR intensity during CF vs. 7MH. All subjects reached a significantly higher %VO2 max (61 ± 8% vs. 42 ± 8%, mean ± SD, P<0.001) and %maximal HR (84 ± 7% vs. 78 ± 7%, P<0.05) during CF vs. 7MH. With CF, 7 subjects achieved %VO2 max values in the moderate intensity range, while 4 were in the vigorous intensity range. With 7MH, 7 subjects achieved %VO2 max values in the moderate intensity range, while 3 were in the light intensity range, and 1 was in the very light intensity range. Although both apps can be used to meet the current recommendation for daily physical activity, the results indicate that individuals may need to increase the intensity of exercise and/or perform exercises at least 2 to 4 times·d-1 to meet the recommendations for moderate or vigorous intensity exercise.
