Multiple Breathing Training on Pulmonary Function and Respiratory Muscle Strength in Older Adults

Inclusion Criteria: * Older adults aged 60-75 years, both male and female. * Not regularly physically active (exercising fewer than 2 times per week) during the 6 months prior to the study. * Cooperative, without communication problems, and able to follow instructions from the trainer. * No history of cardiovascular disease and no respiratory diseases such as asthma, chronic obstructive pulmonary disease (COPD), etc. * No hypertension, or if diagnosed with hypertension, it must be well controlled, with resting blood pressure not exceeding 140 mmHg systolic and 90 mmHg diastolic. * Able to ambulate independently without assistance or assistive devices. * Willing to participate in the study and able to provide written informed consent. Exclusion Criteria: * Any unforeseen events preventing continued participation in the study, such as injury from an accident or illness. * Attendance of less than 80% of the training sessions (fewer than 19 out of 24 sessions, including the basic training period). * Withdrawal of consent or unwillingness to continue participation in the study.