SCHEDULE 3.    WORLD RUGBY PERFORMANCE SPECIFICATIONS FOR PLAYERS MONITORING DEVICE

Introduction

Rugby is a contact sport with intrinsic hazards. Player Monitoring Devices are worn by Players to determine various parameters of performance during matches. This Specification identifies mandatory requirements for Player Monitoring Devices without seeking to compromise the form or appeal of the game and with the overall goal being to promote player welfare and reduce the risks of injuries to Players as far as practicable.

1.    Scope

This Specification sets out requirements for Player Monitoring Devices. General requirements relating to the ergonomics, construction, sizing and design of the equipment are specified. Performance requirements relating to impact attenuation and retention method are also provided, and the corresponding test methods are described.

2.    Terminology

•    Player Monitoring Device (Device) – any Device which is worn by a Player and which is capable of determining, live or recorded, data about a Player’s movements or any physical aspect of their performance.
•    Retention System – that which is used to secure the Device to the body.
•    Radius of curvature – the radius of a circle formed with the curved part of a Device’s surface when looking at a cross-sectional view perpendicular to the top surface.
•    Rupture – damage to the Device as defined in Section 4.3.1 
•    Stud – a steel stud as per that defined in Regulation 12 – Schedule 2, Figure 1.
•    g – the acceleration due to gravity.  g (standard) = 9.80665 m/s2.

3.    Requirements

3.1    Ergonomics

Devices must be designed and constructed to minimise discomfort for the wearer. Normal playing movements shall not be impeded by wearing the Device.

3.2    Construction

3.2.1    Construction Materials

It is the manufacturer’s responsibility that all materials used in the construction of the casing of the Device shall not be significantly or materially affected by ultra-violet radiation, water, dirt, perspiration, toiletries, household soaps and detergents. All materials coming into contact with the wearer’s body will not be of the type known to cause skin disorders and shall not cause abrasion of either the wearer or other Players.

3.2.2    Retention System

Devices must be secured to a Player’s person via one of two methods:
•    A pouch incorporated into the rear of the Player’s jersey; or
•    A pouch incorporated into a harness to be worn by the Player under the jersey, which complies fully with all relevant requirements of Law 4 and Regulation 12.

Whichever of those methods is used to retain the Device must ensure that the Device is held broadly in line with the Player’s T2 – T6 vertebrae, with its longest dimension parallel with the Player’s spine. The pouch must be small enough to ensure that the Device cannot rotate on any axis while worn by the Player.

Both methods must incorporate a padding material surrounding all sides of the Device which does not exceed 2mm thickness.

Padding materials must be homogeneous padding facing towards the wearer and must be the same texture, hardness and density as that facing the opponent). Foam padding of sandwich construction is not allowed.

3.2.3    Finish

Devices shall be so constructed that they will not cause any injury to the wearer or other Players during play.

3.3    Size, Weight and Shape

The declared dimensions of the Devices must be within the maximum and minimum dimensions detailed in Table 1 below, the actual dimensions measured by the test house must be within ±5% of these declared dimensions:

Dimension

Maximum

Minimum

Length

100 mm

60 mm

Width

50 mm

30 mm

Thickness

25 mm

10 mm

Table 1: Dimension requirements for Player Monitoring Device

No surface of the Device may have a radius of curvature less than 12mm. This does not apply to:
•    Markings, where the depth of any profile does not exceed 1mm.
•    Any surface which has a radius of curvature less than 12mm must have a tangent that is less than or equal to 30° from the normal where the normal is perpendicular to the Player’s back when worn in the manner prescribed by the manufacturer. See Figure 1 below.

In addition, the following openings are permitted:
•    Openings for fixings must not be greater than the equivalent area of a circle with a diameter of 5.5mm.
•    Openings for connectors (charging points, etc.) must not be greater than 100mm2

http://www.worldrugby.org/photos/214859
 
The mass of the Device shall not exceed 0.09 kg, including the weight of any battery devices within it.

3.4    Performance Requirements

3.4.1    Resistance to Impact Loading

When tested in accordance with the procedures specified in Section 4.4.5, the Device shall not rupture by any manner detailed in Section 4.3.1.

3.4.2    Resistance to Compression Loading

When tested in accordance with the procedures specified in Section 4.4.6 the Device shall be deemed to have failed if it ruptures under loads less than 1.001kN. If a Device ruptures under loads of between 1kN and 2.5kN, then it must be assessed for failure as detailed in Section 4.3.2. If the Device does not rupture under a load of 2.5kN then the Device will be deemed to have passed the dynamic loading requirements.

If, at any point a Device fails a testing requirement, the whole testing protocol must be stopped and the Device design determined to be non-compliant.

4.    Test Methods and Procedures

Compliance

4.1   Sampling

Two distinct test pieces are required:
•    Empty Device casings
•    Full Devices, that is a Device which includes all parts required to function properly and as intended to be worn by an athlete.

A total of 20 empty Device casings and 5 full Devices are required for testing. 

It is recommended that all empty Devices are tested for all conditions prior to the full Devices being tested.

4.2    Conditioning of Specimens

•    Test specimens must be in a new, un-used and un-tested condition. 
•    The test specimen must be prepared by being conditioned for 12 hours at 0±2°C or 23±2 °C depending on the test requirements and at an ambient humidity.

4.3    Testing Conditions

4.3.1    Rupture

A Device will be deemed to have ruptured if the casing changes shape permanently as a result of any of the modes:

•    Fractures – When the surface of the Device cracks or fractures resulting in any part protruding beyond the level of the original (pre-test) surface.
•    Shatters – When one or more fragments are detached from the body of a Device into one or multiple small, sharp pieces.
•    Undergoes plastic deformation – When the form of a component is permanently altered. The form will not have changed if the original features as measured for Section 3.3 are met while disregarding any punctures (holes made by the stud penetrating the device).

4.3.2    Impact Loading failure

A Device will be deemed to have failed the impact loading test if it ruptures (as defined in 4.3.1 above).

4.3.2    Compression Loading failure

A Device will be deemed to have failed the compression loading test if it shatters (as defined in 4.3.1 above) or any sharp, jagged edges, including those of internal parts of the full Devices tested, protrude from the surface of the Device. 

4.4    Test locations

The Device is tested at points within two areas (Area 1 and Area 2) where the product is deemed to be most prone to fracture. The points chosen within these areas are tested repeatedly and are determined by the tester from specifications detailed in Section 7 which lead the tester to determine them as the structurally weakest points.

The two areas are produced from the centre point of the product, when viewing it in plan-view as it would be secured to a Player’s back (pursuant to paragraph 3.2.2 above). This is determined by finding the midpoint of the topmost face from the length and width of the Device. When the midpoint has been determined, Area 1 is calculated to 50% ±1% of the full height and 75% ±1%of the full width from the centre point. Area 2 is defined as the largest elliptical area which can be created where no edge overlaps the edge of the Device. The area encompassed by Area 1 is not included in Area 2, so that the two locations cannot both be located within area 1.

http://www.worldrugby.org/photos/192381


Figure 2: Test Location Areas

4.4.5    Impact Load Testing

4.4.5.1    Principle

The Device is impacted with a metal stud and assessed for damage.

4.4.5.2    Apparatus

The following apparatus is required:
•    A method of reducing the temperature of the sample to 0°C ±0.1°C. 
•    A humidity gauge capable of recording to ±1% humidity. 
•    A thermometer or thermocouple capable of recording temperatures at 0.1°C increments
•    A camera capable of producing a digital record of all features pre and post testing. 
•    Double-sided adhesive tape 10x30 ±1 mm with a thickness of 0.15 ±0.1 mm and an adhesive strength of at least 15 ±5N/cm to steel shall be used to secure the Device to the steel plate.
•    Distance measuring Device capable of measuring to 0.1mm increments
•    A stud, as defined in Section 2 above, which is free from visual defects.
•    A test machine which includes:
     o    A test area that allows the Device to be laid horizontally across a steel plate of a minimum thickness of 10mm. There must be a clear surround on the plate of 15mm in all directions when the sample is mounted. 
     o    A steel frame capable of dropping a mass of 6.2kg ±0.050kg vertically on guide rails from various heights between 0mm and 150mm from the top of the fixed sample. Care must be taken to ensure the friction between the mass and the guide rails is kept to a minimum (free slide). The guide rails must be frictionless or as close to frictionless as possible. This should be verified by measuring the free drop acceleration which must be within 5% of the theoretical acceleration due to gravity.
     o    A means of securely connecting the stud to the mass in a manner which ensures that it is the only item striking the Device.

http://www.worldrugby.org/photos/224006


Figure 3: Impact Load Testing Apparatus: 
1. Guide rails 2. Stud 3. Test Specimen 
4. Drop Mass 5. Steel base plate

4.4.5.3    Procedure

•    The stud is fitted onto the drop mass in order to make contact with the Device.
•    Adhesive tape is applied between the base plate and the GPS unit as stated in 4.4.5.2 above.
•    The maximum dimensions of each Device along all 3 axes are measured accurately and recorded.
•    The Device is positioned so that the stud impacts the appropriate identified test location stated in Section 4.4. The impact of the stud and drop mass shall not dislodge the Device from its position when impacting otherwise the results obtained should be discarded. 
•    The impact assembly (weight and stud) is positioned to drop from a distance of 30±0.2mm between the top surface of the test specimen and the bottom surface of the stud. Table 2 details the testing schedule (each test must be conducted using a virgin test specimen).
•    The impact assembly is released to drop through free fall so that the stud impacts the Device at the required location.
•    The Device is assessed for failure as per the specification in Section 4.3 above.
•    The maximum dimensions of each Devices along all 3 axes are measured accurately post-test and recorded.
•    Full Devices (tests 9 and 10) shall only be tested if and when all other Devices are deemed to have passed the test.

Test

Position

Temperature (°C)

1 – 2

1

23±2 °C

3 – 4

2

23±2 °C

5 – 6

1

0±2 °C

7 – 8

2

0±2 °C

9 (full Device)

1

23±2 °C

10 (full Device)

2

0±2 °C

Table 2 - Testing Schedule for Impact Testing

4.4.6    Compression Load Testing

4.4.6.1    Principle

The Device is exposed to an increasing compression load until it ruptures or the applied load reaches 2.5kN.

4.4.6.2    Apparatus

•    A freezer to reduce the temperature of the sample to 0±0.1oC. 
•    A humidity gauge capable of recording to ±1% humidity. 
•    A thermometer or thermocouple capable of recording temperatures at 0.1oC increments.
•    A camera capable of producing a digital record of all features pre and post testing. 
•    Double-sided adhesive tape 10x30 ±1 mm with a thickness of 0.15 ±0.1 mm and an adhesive strength of at least 15 ±5N/cm to steel shall be used to secure the Device to the steel plate.
•    Distance measuring device capable of measuring to 0.1mm increments
•    A stud, as defined in Section 2 above, which is free from visual defects.
•    A test machine such that: 
     o    The specimen can be laid horizontally across a steel plate of a minimum thickness of 10mm with a minimum of 15mm free space around the specimen.
     o    The load can be applied vertically at a constant rate of 10 ± 0.5mm/min. 
     o    A load up to 2.5kN can be applied to the Device. 
     o    The force applied to the test specimen can be read with a maximum error of 1% and can be recorded. 
     o    Load applicators can be attached as per two testing conditions: 
           -    A stud securely connected to the underside of the moving plate in a manner which ensures it is the only part of the moving plate which contacts the Device.
           -    Plate testing – A steel plate with minimum dimensions of 15mm larger than the test specimen in all horizontal directions and a minimum thickness of 10mm.

Stud point testing                          Plate testing 

http://www.worldrugby.org/photos/192385


Figure 4 – Compression Test Apparatus:
1. Load Cell 2. Moving Crosshead 3. Steel Platen
4. Test Specimen 5. Load Applicator

4.4.6.3 Procedure

•    Ensure the steel plate and load applicator are free of debris. 
•    Rest the Device on the steel plate with the identified test location directly below the appropriate load applicator as shown in Figure 4 securing with the double-sided adhesive tape between the test specimen and the steel plate. 
•    Vertically apply the load on the test specimen by means of the specified test machine at 10mm/min until the maximum load of 2.5kN is reached, utilising the appropriate load applicator for the test being conducted (plate or stud).
•    Plot the resulting Force/Extension curve.  
•    Photographic images must be taken as per Section 5.1 below. 
•    For the 0°C testing conditions the testing must be commenced on a rising thermometer and testing must be completed before the Device temperature rises to 5.1°C. 
•    Full Devices shall only be tested if and when all other Devices are deemed to have passed the test.

Test

Position

Temperature (°C)

11 – 12

Stud

23±2 °C

13 – 14

Plate

23±2 °C

15 – 16

Stud

0±2 °C

17 – 18

Plate

0±2 °C

19 (full Device)

Stud

23±2 °C

      20 (full Device)

Plate

0±2 °C

Table 3 - Testing Schedule for Compression Testing

4.4.7    Radius of Curvature

4.4.7.1    Principle

The external form of the Device is checked to ensure all parts required have a radius of curvature greater than 12mm, and thus no sharp edges.

4.4.7.2    Apparatus

An appropriate radius gauge, made of metal (steel or aluminium) and not more than 2mm thick shall be used. The shape of the gauge is shown in Figure 5, where r shall be 12mm ±0.1mm and α shall be 60° ±2°.

http://www.worldrugby.org/photos/192384


Figure 5: Radius Gauge

4.4.7.3    Procedure

For all profiles of depth greater than 1mm ±0.1mm place the gauge in the areas of minimum radius of curvature of the area to be tested. If both ends of the gauge touch the surface of the Device then that area passes the requirement. Figure 6 illustrates the procedure and the pass and fail conditions.
 

http://www.worldrugby.org/photos/192383


Figure 6(a): Pass Condition

http://www.worldrugby.org/photos/192382


Figure 6(b): Fail Condition

5    Reporting

5.1    Images

Photographic images of each Device prior to and post testing are taken. Images must be on a plain background and well lit. Sufficient images must be taken of the Device including at least a plan, elevation, end elevation, and detailed views of any failure that occurs. 

In addition, any data whether in table or graph form recorded during testing shall be reported.

5.2    Test Report

The test results and all other required information shall be reported using the World Rugby Player Monitoring Device Testing Report. 

6    Product Marking

Devices shall be permanently marked with the following information by the manufacturer once compliance with this specification has been achieved:
•    Name or trademark of the manufacturer.
•    The World Rugby Approved logo, permanently visible on the Device.
•    Any other markings required by any applicable regulations in the territory of use.

7    Manufacturer’s declarations
 
When submitting Devices for testing to testing institute, the manufacturer must provide a schematic of the Device design, including dimensions, with plan views of both sides of all assembly components for the casing and cross-sectional views along the length and width of the assembled casing.