Foot-Ankle Exercise and Walking Exercise on Diabetes Mellitus Patients

The primary purpose of this study is to determine the effectiveness of foot-ankle exercise and walking exercise on foot neuropathy, stress, and quality of life (QoL) among people with diabetes mellitus (PWDM). At the same time, the secondary purpose of this study is to determine the effectiveness of foot-ankle exercise and walking exercise on body mass index (BMI), fasting blood glucose (FBG), blood pressure (BP), and ankle-brachial index (ABI) among PWDM at baseline (before intervention/0 week), at 6-weeks and 12-weeks. The research questions in this study include the following: * Is foot-ankle exercise effective for foot neuropathy, stress, QoL, BMI, FBG, BP, and ABI for PWDM? * Is walking exercise effective for foot neuropathy, stress, QoL, BMI, FBG, BP, and ABI for PWDM? * Are there any differences in the mean scores of foot neuropathy, stress, QoL, BMI, FBG, BP, and ABI of PWDM within and between the foot-ankle exercise, walking exercise and control group at baseline, 6 weeks, and 12 weeks? * Are there any mediators/moderators effect of BMI, FBG, blood pressure, ABI, and stress for influencing foot exercise and walking exercise interventions on foot neuropathy and QoL for PWDM? Participants in the foot-ankle exercise group will be given health education about DM and foot-ankle exercise, as well as leaflets and videos. Participants will be taught how to practice foot-ankle exercises before the instructor. Afterwards, participants will practice foot-ankle exercises independently without supervision for 2-3 sessions every day for 12 weeks. Participants in the walking exercise group will be given health education about DM, walking exercises and leaflets. Participants will practice walking exercises independently without supervision for 12 weeks. Participants are advised to do walking exercises with a minimum duration of 10 minutes for each session and 150 minutes/week. Two consecutive days without walking exercise are not allowed. Participants in the control gro