Scientific Sources

References used in JOIFIT24 DF870 classifications and analysis

BMI Classifications

WHO Global Database on BMI — World Health Organization international BMI classification standards
JASSO Guidelines 2022 — Japanese Society for the Study of Obesity. Japan-specific BMI cutoffs (obesity ≥25)

Body Fat Standards

ACE Body Composition Categories — American Council on Exercise body fat percentage ranges (essential, athletes, fitness, average, obese)
ACSM Body Composition Assessment — American College of Sports Medicine guidelines for body composition evaluation

Sarcopenia / SMI

AWGS 2019 Consensus — Asian Working Group for Sarcopenia. SMI cutoffs: <7.0 kg/m² (male), <5.7 kg/m² (female)

Cardiometabolic Risk

WHtR Screening Tool — Waist-to-Height Ratio as a cardiometabolic risk predictor
WHtR Meta-analysis — Systematic review confirming WHtR superiority over BMI for cardiovascular risk screening

Muscularity

FFMI Natural Limits (Kouri 1995) — Fat-Free Mass Index study establishing natural muscularity ceilings (~25 male, ~22 female)

Metabolic Rate

Harris-Benedict Equation — Classic BMR estimation formula based on weight, height, age, and sex
Mifflin-St Jeor Equation — Modern BMR formula considered more accurate for contemporary populations

BIA Accuracy

BIA vs CT Visceral Fat — Comparison of bioelectrical impedance analysis with CT scan for visceral fat measurement
Multifrequency BIA Reliability — Study on the reliability and reproducibility of multifrequency BIA measurements

Equipment

Yamato DF870 Operation Manual — Official operation manual for the Yamato Body Planner DF870
Yamato Scale Co., Ltd. — Official website of the Yamato DF870 manufacturer

This page lists the scientific references and standards used by JOIFIT24 DF870 for body composition classifications and health assessments. These references are provided for educational purposes only. This tool is not a substitute for professional medical advice.

BODY COMPOSITION

Scientific Sources