Labosport Lightweight Rotational Resistance (LwRR) Test Device
The Labosport Lightweight Rotational Resistance (LwRR) device belongs to a new generation of sports surface testing equipment, designed to measure rotational traction on both synthetic turf and natural grass fields. This type of measurement is essential to assess how much grip a surface provides when an athlete pivots or changes direction. It is a critical factor for safety, injury prevention, and performance.
The LwRR was developed in full compliance with FIFA Test Method 06, which is also endorsed by World Rugby. This makes it a reliable tool for professionals who need to evaluate or certify sports fields according to international requirements.
A Modern, Portable, and Efficient Testing Solution
Created as a successor to the original EN 15301-1 rotational resistance device, the LwRR offers a modernised design with improved practicality. It features a reduced weight of approximately 90 percent, significantly improving ease of use during fieldwork. Unlike older, heavier models, this device can be disassembled for convenient transportation and storage.
The stability of the LwRR is enhanced by a large, studded footplate that ensures optimal surface contact during testing. The digital torque meter built into the device provides high-precision and repeatable measurements, even across a range of torque values. This allows for consistent data collection, whether measuring on soft natural grass or more compact synthetic turf.
To further support mobility and field use, the LwRR comes in a durable, compact case with laser-cut foam inserts, offering maximum protection for the components while in transit.
Why Rotational Traction Testing Matters
Understanding the rotational grip of a surface helps identify whether athletes are at risk of slipping or injury due to excessive traction. Testing rotational resistance allows surface owners and managers to find the right balance between grip and rotational release. This ensures that players can move naturally without being exposed to undue stress on their joints and ligaments.
The Lightweight Rotational Resistance test is particularly relevant for:
- Football and rugby fields
- Indoor and outdoor synthetic pitches
- Hybrid turf systems
- Natural grass surfaces maintained at professional level
By providing precise, standardised measurements, the LwRR supports sports field certifications, surface development, and comparative testing across different installations or field conditions.
How the LwRR Device Works
Step 1: Load the Test Foot onto the Surface
Start by placing the LwRR on the surface you wish to assess. The bottom of the unit includes a round test foot with six football studs. Simply step onto the foot to apply a 450 Newton vertical load, which is generated by a pre-compressed spring inside the unit. This simulates the downward force typically applied by a player’s foot during a pivot movement.
Step 2: Rotate and Record
Once the studs are properly inserted into the surface, use the torque wrench to manually rotate the footplate. As the foot turns, the digital torque meter records the maximum resistance provided by the surface against rotation. The result reflects the surface’s ability to offer traction while allowing safe rotational movement.
A Reliable Tool for Field Managers and Test Experts
The LwRR is trusted by testing laboratories, sports surface manufacturers, facility managers, and governing bodies around the world. It is an essential part of many certification and compliance protocols, especially for fields used in competitive sport.
Whether you are looking to evaluate the safety of a new surface or to benchmark an existing installation, the LwRR offers an accessible and efficient solution.
