<![CDATA[Abstract. Gastroesophageal reflux disease (GERD) is a digestive disorder caused by the backflow of gastric contents into the esophagus. Physical activity is suspected to be associated with the risk of GERD through mechanisms involving increased intra-abdominal pressure, as well as the role of the lower esophageal sphincter (LES). This study aims to describe the level of physical activity among medical students based on light, moderate, and vigorous intensity categories; determine the proportion of students at risk of GERD; and analyze the relationship between physical activity and GERD risk. This study employed an analytical observational design with a cross-sectional approach. Physical activity was measured using the International Physical Activity Questionnaire (IPAQ), while GERD risk was assessed using GERD-Q. Data were analyzed using the Chi-square test and Spearman correlation. The findings showed a significant relationship between physical activity and GERD risk (p = 0.018), with a weak positive correlation (r = 0.240). This indicates that higher physical activity intensity is associated with a greater probability of GERD symptoms. Abstrak. Gastroesophageal Reflux Disease (GERD) merupakan gangguan saluran cerna akibat aliran balik isi lambung ke esofagus. Aktivitas fisik diduga berhubungan dengan risiko GERD melalui peningkatan tekanan intraabdominal serta dipengaruhi oleh fungsi Lower Esophageal Sphincter (LES). Penelitian ini bertujuan menggambarkan tingkat aktivitas fisik mahasiswa berdasarkan kategori intensitas, mengetahui proporsi risiko GERD, serta menganalisis hubungan aktivitas fisik dengan risiko terjadinya GERD. Penelitian menggunakan desain observasional analitik dengan pendekatan cross-sectional. Aktivitas fisik diukur menggunakan International Physical Activity Questionnaire (IPAQ), sedangkan risiko GERD dinilai menggunakan GERD-Q. Analisis data dilakukan menggunakan uji Chi-square dan korelasi Spearman. Hasil menunjukkan terdapat hubungan bermakna antara aktivitas fisik dan risiko GERD (p = 0,018), dengan proporsi risiko sebesar 40,4% pada aktivitas ringan, 48,4% pada aktivitas sedang, dan 70,3% pada aktivitas berat. Korelasi Spearman menunjukkan koefisien 0,240 yang mengindikasikan hubungan positif berkekuatan lemah. Temuan ini menyimpulkan bahwa semakin tinggi intensitas aktivitas fisik, semakin besar peluang terjadinya keluhan GERD. Kata Kunci: aktivitas fisik, GERD-Q, IPAQ, mahasiswa kedokteran.]]>
