ArticleJournal of physiological anthropology2025
Relationship between age and various muscle quality indices in Japanese individuals via bioelectrical impedance analysis (BIA).
Article in Journal of physiological anthropology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Relationship Between Age and Grip Strength, Phase Angle, and Impedance Rate Measured by Bioelectrical Impedance Analysis in Japanese Individuals Aged 15-18 Years.Physiological research · 2026Article
- Phase angle, impedance ratio, and athletic performance of young adult Japanese track and field throwers.Physiological reports · 2026Article
- Relationship between Early Postoperative Regional Phase Angle and Walking Ability in Older Adult Patients with Hip Fracture.Progress in rehabilitation medicine · 2026Article
- Longitudinal relationships between physical fitness and phase angle as a biomarker of cellular health in Brazilian male adolescents: a Bayesian analysis.Scientific reports · 2025Article
- Relationship Between Breakfast Skipping and Body Composition, Nutritional Status or Chronotype in Female University Students With Normal Body Weight.Physiological research · 2025Article
- Association of objectively measured physical activity with phase angle obtained from bioelectrical impedance analysis in older adults with disabilities under the long-term care insurance system.Journal of physiological anthropology · 2025Article
- Evaluating muscle aging during relaxed standing, squats and lunges through electrical bioimpedance.Scientific reports · 2025Article
- The Relationship Between Body Fat Percentage, Anthropometric Measurements, and Diabetes Complications in Female Patients with Type 2 Diabetes.Journal of clinical medicine · 2025Article
- Assessment of muscle quality by phase angle and body physique in nonathlete students and trained/developmental athletes.Physiological reports · 2025Article
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Authors and funding
4 authors.
Funding
Abstract
backgroundBioelectrical impedance analysis (BIA) is widely used as a convenient method of measuring body composition. The validity of the phase angle (PhA), impedance rate (IR), and resistance rate (RR) as indices of muscle quality using BIA has been suggested. This study aimed to investigate the relationship between these muscle quality indices and age, and to clarify their characteristics.
methodsThe appendicular muscle mass (AMM), AMM corrected for body mass index (AMM/BMI), PhA, IR, and RR were determined using BIA in 1376 Japanese individuals (532 males and 844 females) aged 15-95 years. The PhA was determined from a 50-kHz current, and the IR and RR were determined from the impedance and resistance ratios between the 250- and 5-kHz currents.
resultsAMM/BMI showed greater age-related changes than the other indices of muscle mass. Significant differences in PhA, IR, and RR were found for the whole body at age ≥ 50 years and for the lower limbs at age ≥ 30 years, compared to those in their 20 s. For the arms, age-related changes were small, and significant differences in PhA of females were only observed at aged ≥ 85 years, whereas significant differences in IR and RR were observed at aged ≥ 75 years, compared to those in their 20s.
conclusionThese results suggest that although PhA, IR, and RR in the whole body and lower limbs showed age-related changes, the change in PhA in the upper body was small, especially in females. However, IR and RR in the upper limbs of females reflected age-related changes more than PhA.
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