BIA Technology: Understanding the Science Behind Metrolex Scales

Analysis of body composition through Bioelectrical Impedance Analysis — focus on Metrolex CF-577 (dual-frequency) and MX-F500 (DSM-BIA with four frequencies).

Introduction

Modern smart scales go far beyond simply displaying weight. They deeply analyze body composition, helping to understand the distribution of muscle mass, fat, water, and bone.

At the heart of this innovation lies BIA technology (Bioelectrical Impedance Analysis). The Metrolex CF-577 and MX-F500 models use this technology in advanced ways, with two and four frequencies respectively, to deliver professional-grade precision.

A Brief History

Bioelectrical Impedance Analysis originated in the 1960s, when researchers discovered that electrical conductivity could be used to estimate body composition. Initially, this technology was limited to medical and sports research. The first professional devices were bulky, expensive, and required a skilled operator.

It was not until the 1990s that the first consumer scales appeared. Advances in electronics and analytical algorithms made it possible to design accurate, fast, and connected devices — accessible to the public, like today’s Metrolex models.

How BIA Technology Works

BIA measures the body’s resistance to a small, harmless electrical current. Since different tissues conduct electricity differently:

• Muscles, rich in water, conduct current easily;
• Fat and bone slow it down.

The device evaluates these resistances (called impedances) to estimate the proportion of each tissue type. That’s how a Metrolex scale displays data such as:

• Body fat mass,
• Muscle mass,
• Total body water,
• Basal metabolic rate (BMR),
• Visceral fat.

Reliability and Scientific Validation

Multi-frequency BIA technology is validated by numerous clinical studies. Metrolex devices are tested to achieve high correlations with reference systems (DEXA), with an internal test correlation exceeding 97%.

To ensure accurate measurements, it is essential to follow consistent measurement conditions:

• Weigh yourself in the morning on an empty stomach;
• Avoid intense exercise before measurement;
• Stand upright, barefoot, on a stable surface.

A Technology Serving Health

For health and sports professionals, multi-frequency BIA has become an essential tool:

• Monitoring patients’ body composition;
• Adapting nutritional programs;
• Detecting water or muscle imbalances;
• Accurately tracking athletes’ progress.

Metrolex CF-577 and MX-F500 scales combine scientific precision, user-friendly interfaces, and instantly usable reports.

The Future of BIA Technology

Current trends are moving toward integration with artificial intelligence and the cloud. Future Metrolex scales aim to:

• Generate personalized reports;
• Anticipate metabolic risks;
• Recommend actions tailored to each body profile.

Conclusion

Multi-frequency BIA technology represents the pinnacle of non-invasive body measurement today:

• CF-577 (dual frequency) — ideal for personal and fitness tracking;
• MX-F500 (four frequencies) — professional clinical-grade analysis for medical and advanced sports environments.

By choosing Metrolex, you are choosing reliable, validated technology designed to reveal what’s invisible to the naked eye: your inner health.