Study on variable1. independent variables. 1.1 personal factors. 1.1.1 knowledge about exercise. 1.1.2 attitudes about exercise. 1.1.3 the environment 2. variable: the frequency of exercise.
Variables 1. Independent variables include 1.1 Personal factors 1.1.1 Knowledge of Exercise 1.1.2. Attitudes about exercise 1.1.3. Environment 2. Variables including frequency of exercise.