Title
The relationship between ground conditions and injury in football,Used
Delivery time: 8-12 business days (International)
This thesis analyses the relationships between environmental and ground factors and injuries, particularly knee ACL injuries, in various football competitions around the world. Compared to other grasses such as bermudagrass, Kentucky bluegrass, annual bluegrass and kikuyugrass, perennial ryegrass in the majority of circumstances leads to conditions with reduced shoesurface traction. This is probably because, compared to other species, perennial ryegrass does not have rhizomes (or stolons) which may create excess friction between the shoe cleats and grass layer and which tend to produce a thick thatch layer. The use of perennial ryegrass is the best explanation for the lower ACL injury rates demonstrated in the southern states of Australia. The earlyseason bias exhibited in all examined competitions played on natural grass is likely to be related partially to the increased predominance of ryegrass in the latter stages of the season and partially related to the decrease in thatch on natural grass fields due to traffic over the course of the season.
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For more information, please visit www.P65Warnings.ca.gov.
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To facilitate a smooth return process, a Return Authorization (RA) Number is required for all returns. Returns without a valid RA number will be declined and may incur additional fees. You can request an RA number within 15 days of the original delivery date. For more details, please refer to our Return & Refund Policy page.
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We provide a 2-year limited warranty, from the date of purchase for all our products.
If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
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