<![CDATA[Latar Belakang: Kekurangan Energi Kronis (KEK) merupakan salah satu masalah gizi pada remaja putri yang dapat memengaruhi pertumbuhan, kesehatan reproduksi, dan kualitas sumber daya manusia di masa mendatang. Hasil prasurvei di SMA Negeri 6 Kota Metro tahun 2024 menunjukkan bahwa 36,77% siswi mengalami KEK. Tujuan: Penelitian ini bertujuan menganalisis hubungan pengetahuan, aktivitas fisik, dan persepsi body image dengan kejadian Kekurangan Energi Kronis (KEK) pada remaja putri di SMA Negeri 6 Kota Metro. Metode: Penelitian kuantitatif analitik dengan desain cross-sectional dilakukan pada 124 dari 337 siswi yang dipilih menggunakan teknik simple random sampling. Kejadian KEK ditentukan berdasarkan pengukuran Lingkar Lengan Atas (LILA) dengan titik potong 23,5 cm. Data pengetahuan, aktivitas fisik, dan persepsi body image dikumpulkan menggunakan kuesioner yang telah diuji validitas dan reliabilitas. Analisis data menggunakan uji Chi-square dengan penyajian Odds Ratio (OR), 95% Confidence Interval (95% CI), dan nilai p. Hasil: Sebanyak 48,4% responden mengalami KEK. Terdapat hubungan yang bermakna antara pengetahuan dengan kejadian KEK (p=0,015; OR=2,694; 95% CI: 1,192–6,088), aktivitas fisik dengan kejadian KEK (p=0,040; OR=2,248; 95% CI: 1,032–4,899), serta persepsi body image dengan kejadian KEK (p=0,020; OR=5,471; 95% CI: 1,131–26,462). Kesimpulan: Terdapat hubungan yang bermakna antara pengetahuan, aktivitas fisik, dan persepsi body image dengan kejadian KEK pada remaja putri di SMA Negeri 6 Kota Metro. Upaya peningkatan edukasi gizi, penerapan aktivitas fisik yang sesuai, dan pembentukan persepsi body image yang positif perlu terus didukung sebagai bagian dari promosi kesehatan remaja. Kata Kunci: KEK, Pengetahuan, Aktivitas Fisik, Persepsi Body Image, Remaja Putri. ABSTRACT Background: Chronic Energy Deficiency (CED) is a nutritional problem among adolescent girls that may adversely affect growth, reproductive health, and future quality of life. A preliminary survey conducted at SMA Negeri 6 Kota Metro in 2024 showed that 36.77% of female students experienced CED. Objective: This study aimed to analyze the relationship between nutritional knowledge, physical activity, and body image perception and the incidence of Chronic Energy Deficiency (CED) among adolescent girls at SMA Negeri 6 Kota Metro. Methods: This quantitative analytic study employed a cross-sectional design involving 124 of 337 female students selected using simple random sampling. CED was determined based on Mid-Upper Arm Circumference (MUAC) measurement, with a cut-off point of 23.5 cm. Data on nutritional knowledge, physical activity, and body image perception were collected using validated and reliable questionnaires. Data were analyzed using the Chi-square test, and the results were presented as Odds Ratios (ORs), 95% Confidence Intervals (95% CIs), and p-values. Results: A total of 48.4% of respondents were classified as having CED. Significant associations were found between nutritional knowledge and CED (p=0.015; OR=2.694; 95% CI: 1.192–6.088), physical activity and CED (p=0.040; OR=2.248; 95% CI: 1.032–4.899), and body image perception and CED (p=0.020; OR=5.471; 95% CI: 1.131–26.462). Conclusion: Nutritional knowledge, physical activity, and body image perception were significantly associated with the incidence of Chronic Energy Deficiency (CED) among adolescent girls. Efforts to improve nutrition education, promote appropriate physical activity, and foster a positive body image should be strengthened as part of health promotion programs for adolescent girls. Keywords : Body image perception, Chronic Energy Deficiency (CED), Nutritional knowledge, Physical activity, Adolescent girls. ]]>
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