People in this class have severe locomotor issues with all four limbs as a result of loss of muscle strength or spasticity.
[2] ACSM's Primary Care Sports Medicine defines LAF1 as a medical class as "[s]evere involvement of the four limbs -- for example, MS, muscular dystrophy (MD), juvenile rheumatoid arthritis (JRA) with contractures" As a functional class, ACSM's Primary Care Sports Medicine defines LAF1 as "use of wheelchair with reduced function of muscle strength and/or spasticity in throwing arm, and poor sitting balance.
"[3] Medically, this class includes people with severe multiple sclerosis, muscular dystrophy, and juvenile rheumatoid arthritis with contractures.
In terms of functional classification, this means the sportsperson uses a wheelchair, has poor sitting balance and has reduced strength or spasticity in their throwing arm.
"[5] Sportspeople with muscular dystrophy in this class have a number of factors that can make sports participation difficult.
The rules were later changed to be inclusive of anyone, including Les Autres players, who meet the minimum disability requirement.
[23][24] Powerlifting is another sport open to people from this class where they compete against others with minimal disability requirements and are segregated based on weight.
This grade is typically for people with cerebral palsy, les autres and spinal cord injuries who have severe levels of disability.