Body Composition Analysis in Newcastle

Dietician assessing body composition of an athlete

Body composition testing provides athletes with objective insight into fat mass, lean tissue, and physical adaptation to training.

At RJ Performance Nutrition, body composition assessments are conducted using the International Society for the Advancement of Kinanthropometry (ISAK) skinfold method, a recognised standard within sports science, athlete monitoring, and applied sports nutrition practice.

This assessment provides reliable, repeatable measurements that help athletes understand how training and nutrition strategies influence body composition over time.

Body composition testing appointments are available in person in Newcastle upon Tyne.

What Is ISAK Skinfold Body Composition Testing?

ISAK logo

The ISAK skinfold method is a standardised anthropometric assessment used internationally within sport science and high-performance sport. Skinfold measurements are taken at specific anatomical sites using calibrated equipment to estimate body composition. ISAK assessments are widely used because they:

  • Provide reliable and repeatable measurements

  • Allow meaningful monitoring of body composition changes

  • Support sports nutrition and training interventions

  • Are used in elite sport and sports science research

For athletes, this provides far more useful information than body weight alone.

Who Body Composition Testing Is For

Body composition testing in Newcastle may be useful for:

  • Endurance athletes monitoring training adaptation

  • Strength and power athletes tracking lean tissue development

  • Athletes as part of sports nutrition interventions, for monitoring and progress tracking

  • Individuals working towards performance-related body composition goals

  • Athletes wanting objective monitoring of training progress

  • Health related goals

For athletes, body weight alone does not accurately reflect physiological change, which is why structured body composition assessment can be valuable.

What Happens During a Body Composition Analysis

A typical body composition testing appointment includes:

Standardised skinfold measurements taken according to ISAK protocols.

Anthropometric Measurements

Body Composition Analysis

Sports nutritionist taking mid-arm circumference from an athlete

Body fat and lean fat mass and distribution.

Interpretation of Results & Monitoring Over Time

Results interpreted in relation to training load, sport demands, health and nutrition strategies. Repeat body composition testing allows athletes to track training adaptations and nutrition outcomes.

Body Composition Testing and Athlete Health

Body composition results should always be interpreted in the context of overall health, performance, and adequate energy availability. Where appropriate, results may inform sports nutrition strategies to support training, recovery, and performance outcomes.

If any clinical concerns arise, appropriate referral or signposting to healthcare professionals may be recommended.

Book Body Composition Testing in Newcastle

Athletes looking for professional body composition testing in Newcastle can book an appointment through RJ Performance Nutrition.

Assessments are conducted in person in Newcastle upon Tyne and provide objective athlete monitoring using the ISAK skinfold method.

FAQs

How accurate is skinfold body composition testing?

1

When conducted using standardised ISAK techniques, skinfold testing provides reliable measurements for tracking body composition changes over time.


How often should athletes measure body composition?

2

Assessments are typically performed periodically to monitor meaningful physiological changes rather than frequent short-term fluctuations.


Is body composition testing suitable for all athletes?

3

It can be useful for many athletes, though results should always be interpreted within the wider context of performance, health, and training demands.


Dietitian and Sports Nutritionist in Newcastle

Athletes looking for evidence-based sports nutrition support in Newcastle upon Tyne can access services through RJ Performance Nutrition.

Support is available for athletes across a range of sports and performance levels, with services including:

In-person services are available in Newcastle upon Tyne, for athletes from surrounding areas in the North East including:

  • Gateshead

  • North Shields

  • South Shields

  • Sunderland

  • Durham

  • Northumberland

Sports nutrition consultations are also delivered online for clients across the UK, allowing athletes to access specialist nutrition support regardless of location.

Appointments can be booked online through RJ Performance Nutrition.