Medical advancements are enhancing the survival rates of individuals with gastric cancer. The growing population of gastric cancer survivors underscores the importance of managing treatment-related after-effects and side effects. Diminished physical function in cancer patients, particularly following gastric cancer surgery, is linked to increased mortality. The substantial decline in physical activity post-surgery contributes to a notable reduction in cardiorespiratory fitness and lower extremity muscle strength. Early postoperative exercise has demonstrated positive outcomes in colorectal cancer patients, facilitating early hospital discharge and supporting long-term recovery. However, there is a paucity of research on the efficacy of early postoperative exercise in the context of gastric cancer. Therefore, this study aims to evaluate the impact of early postoperative exercise on physical function following gastric cancer surgery.

Inclusion Criteria:

1. Adult men and women 19 years of age or older
2. Pathologically diagnosed gastric cancer
3. Able to undergo radical resection (R0)
4. Scheduled for minimally invasive surgery (MIS)

Exclusion Criteria:

1. Pregnant or lactating women
2. Have received chemotherapy and radiation before surgery
3. Scheduled for open surgery
4. Subjects who do not understand or have not given informed consent
5. If healthcare provider (primary care physician) deems it difficult for you to exercise