To explore the safety and compliance of a wearable telemedicine device that can receive basic vital signs in real time, and its active supervision mode with real-time adjustment of exercise prescription for preoperative prehabilitation exercises in patients at home; and to evaluate the effectiveness of preoperative prehabilitation exercises in a telemedicine active supervision mode in patients undergoing thoracoscopic lung tumour resection, taking into account the patient's cardiopulmonary exercise test, postoperative complications and quality of life scores.

Inclusion Criteria:

1. Capacity to give informed consent.
2. Are able to tolerate surgery (i.e., segmentectomy, lobectomy) as indicated by standard clinical pre-op evaluation, including pulmonary function tests and cardiopulmonary exercise testing.
3. Patients who can use a smartphone application.
4. Patients who are diagnosed of stage I or II Non-small-cell lung carcinoma (NSCLC) diagnosis, with or without pre-operative histologic confirmation.
5. Patients who can perform an exercise program for at least 4 weeks from the first visit to the preoperative clinic to elective surgery.

Exclusion Criteria:

1. Known contraindication for cardiopulmonary exercise testing.
2. Patients who have a major medical or psychiatric disorder that is expected to affect exercise.
3. Pregnancy or lactating women.