Latar Belakang: Tekanan darah merupakan timbulnya suatu tekanan pada dinding arteri. Tekanan tersebut yaitu tekanan sistolik dan diastolik. Hipertensi adalah salah satu penyakit degeneratif yang berkaitan dengan peningkatan tekanan darah. Salah satu faktor penyebab tekanan darah tinggi yaitu usia, pola makan, dan status gizi.
Tujuan: Mengetahui hubungan antara asupan serat, status gizi dan usia dengan tekanan darah pada lansia di Posyandu Lansia Wilayah Kerja Puskesmas Jepang Kabupaten Kudus.
Metode: Penelitian ini menggunakan desian cross-sectional. Pengambilan sampel menggunakan teknik consecutive sampling sebanyak 86 lansia. Analisis bivariat dengan uji pearson correlation. Analisis multivariat dengan uji regresi linier berganda.
Hasil: Hasil uji bivariat menunjukkan bahwa tidak ada hubungan asupan serat (p = 0,825), ada hubungan status gizi (p = <0,001), ada hubungan usia (p = <0,001) dengan tekanan darah sistolik. Tidak ada hubungan asupan serat (p = 0,605), ada hubungan status gizi (p = <0,001), ada hubungan usia (p = <0,001) dengan tekanan darah sistolik. Hasil uji multivariat, variabel usia paling mempengaruhi tekanan darah (p = <0,001).
Kesimpulan: Terdapat hubungan antara status gizi dan usia dengan tekanan darah pada lansia. Namun, tidak terdapat hubungan antara asupan serat dengan tekanan darah pada lansia.

ABSTRACT:
Background: Blood pressure is defined as the onset of pressure on the arterial wall. These pressures are classified as systolic and diastolic pressure. Hypertension is one of the degenerative diseases associated with increased blood pressure. One of the factors contributing to elevated blood pressure is age, diet, and nutritional status.
Objective: The objective of this study is to examine the relationship between fiber intake, nutritional status, and age with blood pressure in the elderly at the Intregrated Service Post in the Community Health Center of Jepang, Kudus Regency..
Methods: This study used a cross-sectional design. Sampling was conducted using the consecutive sampling technique, resulting in the inclusion of 86 elderly individuals. Bivariate analysis was con ducted using the Pearson correlation test, while multivariate analysis was performed using multiple linear regression.
Results: The results of the bivariate test indicated that there was no correlation between fiber intake and systolic blood pressure (p = 0.825). However, there was a significant correlation between nutritional status and systolic blood pressure (p = 0.000), as well as between age and systolic blood pressure (p = 0.000). No association was found between fiber intake and systolic blood pressure (p = 0.605). However, a significant association was observed between nutritional status and age with systolic blood pressure (p = <0.001). The multivariate test results indicated that age variables exert the greatest influence on blood pressure (p = <0.001).
Conclusion: A correlation has been identified between nutritional status and age with blood pressure in the elderly population. However, no such relationship has been observed between fiber intake and blood pressure in this demographic.