Group training in water and on land are carried out by the same principles, which is to improve general function, and to improve function and strength around the operated hip.

Group training in water and on land are carried out by the same principles, which is to improve general function, and to improve function and strength around the operated hip

Each session lasts 50 minutes and consists of warm-up, mobility training, strength training, balance training and endurance training. Mobility training is conducted to increase range of motion in the operated hip, strength exercises are conducted to strengthen muscles around the operated hip, balance training are conducted to improve stability around the operated hip and endurance training are conducted to increase patients' physical capacity. This is in line with current guidelines for the exercise of osteoarthritis patients.

Function is evaluated using a questionnaire, Harris Hip Score (HHS) and by using 6-minute walk test (6MWT).

Function is evaluated using a questionnaire, Harris Hip Score (HHS) and by using 6-minute walk test (6MWT).

Function is evaluated using a questionnaire, Harris Hip Score (HHS) and by using 6-minute walk test (6MWT).

Muscle strength around the operated hip are evaluated by measuring isometric muscle strength in hip-abduction and knee-extension using a hand-held dynamometer (HHD) from Lafayette Instruments.