Samadinian Fatemeh, Eshaghian Niloofar, Tarrahi Mohammad Javad, Amani Reza, Akbari Mojtaba, Shirani Fatemeh
Nutrition and Food Security Research Center, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran.
Student Research Committee, Isfahan University of Medical Sciences, Isfahan, Iran.
J Health Popul Nutr. 2025 Aug 31;44(1):315. doi: 10.1186/s41043-025-01060-5.
Phase angle (PA), derived from bioelectrical impedance analysis, serves as an indicator of cellular health, membrane integrity, and hydration status. Despite its potential utility, the relationship between PA and nutritional and lifestyle factors has not been extensively studied in Iranian populations. This study aimed to investigate these associations in Iranian adults.
This cross-sectional study included 239 university employees (85 men and 154 women) with a mean age of 43.32 years. Anthropometric indices and blood pressure were measured. PA was measured by the Body Composition Analyzer Mc780 MA device. Dietary intakes were assessed by using a validated 86-item food frequency questionnaire (FFQ). Physical activity was evaluated by the short form of the International Physical Activity Questionnaire (IPAQ). Associations between PA and study variables were analyzed using Pearson's correlation and Linear Regression.
Significant positive correlations were observed between PA and several anthropometric and body composition indices, including weight, body mass index (BMI), waist circumference (WC), hip circumference (HC), fat-free mass (FFM), muscle mass, bone mass, and visceral fat. PA showed significant associations with dietary intake variables.
This study highlights significant associations between PA and body composition and dietary factors in Iranian adults, with notable sex-based differences. These findings suggest that PA may be a valuable marker for assessing nutritional and cellular health.
通过生物电阻抗分析得出的相位角（PA）可作为细胞健康、膜完整性和水合状态的指标。尽管其具有潜在用途，但在伊朗人群中，PA与营养和生活方式因素之间的关系尚未得到广泛研究。本研究旨在调查伊朗成年人中的这些关联。
这项横断面研究纳入了239名大学员工（85名男性和154名女性），平均年龄为43.32岁。测量了人体测量指标和血压。通过人体成分分析仪Mc780 MA设备测量PA。使用经过验证的86项食物频率问卷（FFQ）评估饮食摄入量。通过国际体力活动问卷（IPAQ）简表评估体力活动。使用Pearson相关性分析和线性回归分析PA与研究变量之间的关联。
观察到PA与多个人体测量和身体成分指标之间存在显著正相关，包括体重、体重指数（BMI）、腰围（WC）、臀围（HC）、去脂体重（FFM）、肌肉量、骨量和内脏脂肪。PA与饮食摄入变量之间存在显著关联。
本研究突出了PA与伊朗成年人身体成分和饮食因素之间的显著关联，且存在明显的性别差异。这些发现表明，PA可能是评估营养和细胞健康的一个有价值的指标。
