Sofia Martinez
Rugby boots have evolved significantly over the last two decades, with players now prioritising comfort, agility, and weight. With the sport's progression, rugby players are now faster and more skilful, and rugby boots have had to keep up with this advancement. The studs on rugby boots have also evolved, with different thread dimensions and materials. The legality of rugby studs depends on the ground type, position of the player, and the region's regulations. Plastic studs, for instance, are required to have rubber ends.
| Characteristics | Values |
|---|---|
| Stud length | Must not be longer than 21 mm |
| Stud shape | Must not have sharp edges; all edges should be finished smooth and rounded to a radius of not less than 1 mm |
| Stud material | Plastic blades must have rubber ends; metal blades are acceptable |
| Stud type | Studs should be chosen based on ground type and playing position; moulded rubber studs or firm ground boots are better for dry conditions |
| Stud brand | Adidas Malice SG boots are a popular option |
| Stud maintenance | If replaceable, studs should be fixed to and detached from the boot sole at least ten times according to the manufacturer's instructions |
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What You'll Learn
Plastic rugby studs must have rubber ends
Rugby boots have evolved significantly over the last two decades, with brands now focusing on comfort, agility, and weight. The studs on these boots have also changed, with different thread dimensions and materials. Most modern rugby studs are manufactured from aluminium, although plastic and metal studs are also used.
Plastic rugby studs are permitted, but they must have rubber ends. For example, the Adidas Predator FG rugby boots have blue rubber tips. It is important to note that the studs should not be on the toe area, and they must conform to specific regulations.
The regulations for rugby studs aim to minimise the inherent risks to players from contact with these components. Studs must not be longer than 21 mm, and all edges should be smooth and rounded with a radius of not less than 1 mm. The shape, profile, length, radius of edges, hardness, propensity to burring, and rate of wear are all critical factors in stud design.
It is worth noting that the opinion of a referee can and should overrule any findings from the specified tests. Therefore, it is advisable to check with the referee before each match to ensure your studs are legal. Additionally, different unions may have slightly different guidelines, so it is essential to refer to the specific rules of your union.
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Metal-tipped studs are not permitted
The materials used for the studs are crucial. They should be chosen to minimise hazards resulting from mechanisms such as abrasion or impact wear, as well as any other form of damage or deterioration. This is in line with legislation such as the EU General Product Safety Directive, which applies to products sold within the European Union and similar laws in other regions.
It is worth noting that the opinion of the referee can and should overrule any findings from tests. Some referees may reject metal-tipped studs out of hand, especially at higher levels of the game. Additionally, metal studs may damage artificial pitches, so turf fields often do not allow them.
Players should also consider the condition of the field, their playing style, and position when choosing stud types. Forwards, who need to dig into the grass and soil for traction, may prefer metal studs for natural grass pitches. In contrast, moulded plastic studs are more suitable for synthetic pitches as they do not need to grip into the turf. Backs, who require less grip, often opt for shorter studs that make for a lighter boot and facilitate faster movement and pivoting.
Overall, while metal-tipped studs may have been used in the past, the current focus is on player and pitch safety, durability, and performance, which non-metal stud options often better provide.
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Stud length is determined by ground type and player position
The length of rugby studs is a crucial factor in ensuring player safety and performance. World Rugby has strict laws surrounding the legality of studs, which are outlined in Law 12. The maximum permitted length of a stud is 21 mm, and it must not have any burring or sharp edges.
The choice of stud length is influenced by two main factors: the ground conditions and the player's position. Firstly, let's consider ground conditions. In warmer, drier climates, the ground tends to be firmer, and pitches may be artificial or of a higher generation, such as 3G or 4G. In these conditions, shorter studs are preferable. Moulded rubber studs or firm ground boots are ideal for these surfaces as they provide adequate traction without being too aggressive.
On the other hand, wet and muddy conditions call for longer studs. When the pitch is saturated, longer studs provide the necessary traction to prevent slipping and improve stability. Forwards, in particular, benefit from longer studs as they need that extra grip when pushing and shoving in scrums. The longer studs at the rear of the boot help them lean forward and maintain their stance.
The position of the player also plays a role in stud length selection. Forwards, who are involved in the scrum and mauls, typically require longer studs for better grip and stability. The Adidas Kakari Elite, designed for forwards, usually has eight studs, with the rear two being longer. In contrast, backs tend to favour shorter studs as they prioritize lightweight boots for faster movement and pivoting. A popular choice for backs is a boot with six studs, like the Adidas Malice SG, which are also suitable for artificial pitches.
It is worth noting that modern rugby boots often have moulded or detachable studs, allowing players to customize their stud lengths based on field conditions. However, it is essential to follow manufacturer instructions when replacing studs to ensure a proper fit and avoid injury. Additionally, the design of the studs should be considered, with smooth and rounded edges to minimize the risk of injury to other players.
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Stud shape, profile, hardness, and wear rate are key factors
Studs are a key factor in enabling rugby players to play the game at a high level. They are designed to provide sufficient grip to players, but they also come with inherent risks. The design of studs needs to be considered in both plan and profile view, as well as with respect to both contact area and radius of curvature.
The wear rate of a stud is important because, over time, the edges of studs can become sharper, especially on colder pitches. This can increase the risk of injury to other players and may result in the stud becoming illegal over time, even if it was initially permitted. The hardness of the stud material also plays a role in the overall performance of the stud and the safety of other players. Softer materials may be less likely to cause injury, but they may also be less durable and more prone to wear and tear.
In addition to these factors, it is important to consider the length and diameter of the stud, as well as the material it is made from. The length of a stud should be determined by the ground conditions and the position of the player. In dry conditions or on artificial pitches, shorter studs or moulded rubber studs may be preferable, while longer studs may be needed in wetter conditions. The material of the stud should also be considered, as some materials may be more prone to damage or deterioration, which could introduce hazards during play.
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Studs must be fixed and detachable from the boot sole
Rugby is a sport that requires players to have a good grip on the ground to perform at a high level. Therefore, rugby boots and studs are designed to provide sufficient grip to players. However, the design of the studs must also consider the potential risks to players from contact with these components.
World Rugby has strict laws surrounding the legality of studs, and one of the key requirements is that studs must be fixed and detachable from the boot sole. This detachability is crucial for several reasons. Firstly, it allows players to change studs according to the ground conditions and their specific needs. Different types of studs, such as moulded rubber studs or aluminium studs, are more suitable for varying ground conditions. For example, a moulded rubber stud may be preferred on firmer ground or artificial pitches. Additionally, the detachability facilitates the replacement of worn-out studs, reducing the risk of injury due to excessive wear or damage.
The process of fixing and removing studs can also introduce the risk of damage, which is why it is essential to follow the manufacturer's instructions and use the appropriate tools when attaching or detaching studs. The studs should be securely fixed to the boot sole and able to withstand the forces exerted during a powerful rugby player's gait. To ensure safety, it is recommended to inspect the studs for any signs of damage that could increase the risk of injury.
In conclusion, the detachability of studs from the boot sole in rugby boots serves multiple purposes. It allows for adaptability to different ground conditions, facilitates stud replacement, and helps maintain the safety of players by reducing potential risks associated with damaged or worn-out studs.
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Frequently asked questions
Plastic studs are legal in rugby as long as they have rubber ends.
Yes, the studs must not be longer than 21mm and must not have any burring or sharp edges.
Yes, the type of stud used depends on the ground type and the player's position. For warmer and drier conditions, moulded rubber studs or firm ground boots are recommended.
Yes, the Canterbury Phoenix Genesis and Speed Infinite collections from 2022 and 2023 onwards require specific stud types.
Some players express concerns about the safety of plastic studs, especially when they extend past the metal part of the boot. Others find plastic studs convenient, especially for artificial pitches.
