Effect of cold therapy with slurry ice after high-load exercise on changes in muscle function

JRCT ID: jRCT1050200001

Registered date:08/04/2020

Basic Information

• Recruitment status: Recruiting
• Health condition(s) or Problem(s) studied: Delayed myalgia
• Date of first enrollment: 08/04/2020
• Target sample size: 42
• Study type: Interventional

Intervention(s)

Exercise issues
Perform high-intensity exercises to cause delayed myalgia. Using BIODEX SYSTEM 4, seven sets of centrifugal knee flexion exercises at a constant rate of 60 degrees per second from 90 degrees to 40 degrees are performed 10 times. The first set is practiced with about 60 persent MVC to get used to the exercise task, and then 6 sets are performed with maximum voluntary contraction. The rest time between sets shall be 60 seconds.
Cold stimulation
Place approximately 300g of Block Ice or the same amount of Slurry Ice (Nippon Electric Heat Corporation) in planning bag (Nippon Giken Kogyo Corporation) Create The adaptation site is the center of the back of the right thigh and the adaptation time is 20 minutes.

Outcome(s)

• Primary Outcome: Passive Joint Stiffness(Based on the knee joint final range of motion and the passive torque measured at the same time, a torque-angle curve is created. From the pre-post and 48-hour hour periods, the lowest knee extension angle and half of it and calculate from the slope of the curve up to the reference angle)
• Secondary Outcome: Skin surface temperature, tenderness, pain during contraction, knee joint extension maximum muscle strength

Key inclusion & exclusion criteria

• Age minimum: >= 20age old
• Age maximum: <= 30age old
• Gender: Male
• Include criteria: Healthy young people
• Exclude criteria: Those who have orthopedic diseases in the lower limbs, those who have been diagnosed with flesh of right hamstrings by a doctor within half a year, those who have a contraindication to cold stimulation such as Raynaud's disease

Related Information

• Primary Sponsor: Aoyama Tomoki