Lean Body Mass (LBM) in body composition analysis using the BIA (bioelectrical impedance analysis) method is expressed in units of mass:

Kilograms (kg) - the most common unit in devices available in Poland and Europe.

Additionally, on printouts from BIA analysers, this value is often converted into a percentage of total body weight (%) to facilitate assessment of its composition in relation to fat.

Weight and height will be combined to report BMI in kg/m^2

Metabolic age in a BIA (bioelectrical impedance analysis) test is expressed in years.

Range: Devices (e.g. Tanita) typically display a metabolic age ranging from 12 to 90 years.

Interpretation: This result compares your basal metabolic rate (BMR) with the average chronological age for that value.

In body composition analysis using the electrical bioimpedance analysis (BIA) method, muscle mass (or skeletal muscle mass - SMM) is most commonly expressed in the following units:

Kilograms (kg) - this is the basic unit used to determine the absolute muscle mass in the body.

Percentages (%) - in many advanced analysers, muscle mass is also presented as a percentage of total body weight.

In body composition analysis using the bioelectrical impedance analysis (BIA) method, bone mass is given in kilograms (kg).

Key information about bone mass measurement in BIA:

This measurement estimates the mass of bone minerals in the body (however, it is not the same as a DEXA bone density scan).

Reference ranges: In women, bone mass is usually around 2-3 kg, and in men 2.5-4 kg.

The result generally reflects the overall health of the skeleton, and a fall below certain values may suggest a risk of osteopenia or osteoporosis.

In bioelectrical impedance analysis (BIA) tests, the content of intracellular water (ICW) and extracellular water (ECW) is most commonly expressed in the following units:

Litres (L) - to determine the absolute volume of fluids. Percentage of body weight (%) - to determine the proportion of water in total body weight.

The International Physical Activity Questionnaire (IPAQ) is a standardized tool used to assess7-day recall of physical activity (walking, moderate-intensity, and vigorous-intensity) and sitting time, available in short (surveillance) and long (detailed research) forms for adults aged 15-69. It calculates activity in MET-min/week to categorize individuals into low, moderate, or high activity.

The KomPAN Questionnaire (Dietary Habits and Nutrition Beliefs Questionnaire) This tool was developed by the Behavioural Determinants of Nutrition Team of the Committee on Human Nutrition Sciences at the Polish Academy of Sciences (PAN).

Purpose: To investigate the dietary beliefs and habits of adult Poles.

Application: The questionnaire enables the assessment of:

• the frequency of consumption of various food groups (e.g. vegetables, fruit, meat, sweets).
• dietary habits (e.g. meal times, snacking).
• views on nutrition (nutritional knowledge). There are various versions (e.g. 2014, 2016, 2024), allowing the survey to be adapted to current research needs.

The questionnaire includes a set of questions on the frequency of food consumption (FFQ - Food Frequency Questionnaire).

The SCREEN II questionnaire (Seniors in the Community: Risk Evaluation for Eating and Nutrition) This is a Canadian tool that has been validated and is also used in Poland. Purpose: Screening for the risk of malnutrition in older people (aged 60-65 and over) living at home (independently).

Use: It helps to identify older people at risk of nutritional problems before serious malnutrition occurs.

It consists of questions concerning:

changes in body weight, appetite, number of meals, difficulties with eating, and the amount of selected food groups consumed.

In Poland, it is used, amongst other things, to assess the quality of the diet of senior club members.

A tool used to assess the physical fitness of older people in three areas: lower-body strength, static balance and walking speed, handgrip strength assessment.

The Timed Up and Go (TUG) test is a quick clinical test that assesses functional mobility, dynamic balance and the risk of falls, particularly in older people. It involves measuring the time (in seconds) it takes for the participant to stand up from a chair, walk 3 metres, turn around, walk back and sit down again.

A tool used to assess the physical fitness of older people in three areas: e.g. lower-body strength, static balance and walking speed, handgrip strength assessment.

The 5-Times Sit-to-Stand Test (5XSST) is a simple, functional test of physical fitness that measures the time taken to stand up from a chair five times without using one's hands.

The aim of the test is to assess lower limb muscle strength, primarily that of the quadriceps, measure functional mobility, assess the ability to perform everyday activities such as standing up from a chair or a car, and assess the risk of falls - a higher score (longer time) is associated with a greater risk of falling in older people.

A result of less than 12-15 seconds is considered normal for most adults. Risk: A result of over 15 seconds suggests functional limitations and a higher risk of falling, particularly in older people.

Age: Norms may vary depending on age (e.g. for people aged 80-89, a result of over 14.8 secon

A tool used to assess the physical fitness of older people in three areas: e.g. lower-body strength, static balance and walking speed, handgrip strength assessment.

HGS (Hand Grip Strength) tests, which measure hand grip strength, involve the objective measurement of the maximum isometric strength of the finger and hand flexor muscles using a portable device known as a hand dynamometer. It is a simple, quick and non-invasive test that serves as an indicator of overall muscle strength and bodily function, as well as a marker of metabolic health and long life. The test measures and assesses grip strength in kilograms (kg) or pounds (lbs).

A hand dynamometer (e.g. Jamar) is used for the test, which the subject squeezes. The subject squeezes the device's handle as hard as they can for approximately 3-5 seconds. The measurement is usually repeated 2-3 times for both hands (dominant and non-dominant) with rest intervals, and the highest value obtained is taken as the result.