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Biomechanical Analysis of the Closed Kinetic Chain Upper-Extremity Stability Test
Journal of Sport Rehabilitation
|September 17, 2016
Summary
The closed kinetic chain upper-extremity stability (CKCUES) test showed no significant differences in scapular kinematics or kinetics across varying hand distances. This functional test may be too challenging for early-stage rehabilitation.
Area of Science:
- Biomechanics
- Kinesiology
- Sports Medicine
Background:
- The closed kinetic chain upper-extremity stability (CKCUES) test is a functional assessment for upper limb function.
- It involves supporting body weight in a push-up position and rapidly alternating hand touches.
Purpose of the Study:
- To investigate scapular kinematic and kinetic responses during the CKCUES test.
- To compare these measures across three distinct hand distance conditions.
Main Methods:
- Experimental laboratory study involving 30 healthy participants (15 male, 15 female).
- Participants performed the CKCUES test with hands at original (36 in), interacromial, and 150% interacromial distances.
- Bilateral scapular kinematics (rotation, tilting) and kinetics (force, time to force) were measured, along with perceived exertion and pain.
Main Results:
- Dominant side scapular internal rotation, posterior tilting, and upward rotation were significantly greater in both genders.
- Scapular upward rotation was greater at the original distance compared to the interacromial distance during the swing phase.
- Women exhibited a significantly longer time to maximum force on their dominant side.
Conclusions:
- No significant differences in CKCUES test kinematic or kinetic measures were found among the three hand distance conditions.
- The CKCUES test's demanding nature may limit its utility in initial or mild-level rehabilitation programs.
