Developing a Mobile APP-Supported Learning System for Evaluating Health-Related Physical Fitness Achievements of Students

Table 7

The results of Hotelling T² of students’ HRPF achievements for the demographic variables (all participants).

	Variables	Descriptive statistics			Hotelling
			Mean	SD	F value
Gender	Male	40	55.37	21.30	1.42	0.23
	Female	49	62.44	18.50
Grade	Grade 3, 5	41	50.73	16.61	10.02	0.01
	Grade 4, 6	48	66.56	19.92
Phone usage experience	Weekly phone using times <5	54	56.85	20.73	0.59	0.66
	Weekly phone using times ≥5	35	63.00	18.51
Exercise habit	Weekly exercise minutes ≤80	55	55.09	18.59	2.68	0.03
	Weekly exercise minutes >80	34	66.02	20.63
Beverage drinking habit	Beverage consumption per week (cans) <3	55	58.45	18.49	0.22	0.92
	Beverage consumption per week (cans) ≥3	34	60.58	22.47
BMI	BMI ≤ 2	68	63.51	17.72	11.65	0.01
	BMI > 2	21	45.53	21.22

Grade 3, 5: control group, grade 4, 6: experimental group; exercise habit: weekly exercise minutes >80, no exercise habit: weekly exercise minutes ≤80; low BMI: BMI ≤ 2, high BMI: BMI > 2, divide by the median, .