Abstract
Aims: To describe reference values for the Closed Kinetic Chain Upper Extremity Stability Test (CKCUEST) and Upper Quarter Y Balance Test (UQYBT) in young adults, and to determine whether there were differences in both tests based on gender and age. Intrarater reliability and measurement error were also assessed. Methods: Test-retest design with a sample of 146 young adults. The CKCUEST (number of touches, normalized score, and power) and the UQYBT (normalized reach in the medial, superolateral, and inferolateral direction, and the composite score) were used. Mean and standard deviation were calculated for both tests. A linear and a mixed regression model were applied to determine significant differences in test scores. Reliability was determined using Intraclass Correlation Coefficient (ICC) and error measurement through Standard Error of Measurement (SEM) and Smallest Detectable Change (SDC). Results: Normative values were established and divided by gender and age. Men presented greater scores regarding the number of touches, power score, superolateral and inferolateral reaches. Good intrarater reliability was found for both tests. In the CKCUEST, the SEM and SDC values were 1 and 3 touches. In the UQYBT, the SEM values ranged from 3 to 7 cm, while the SDC ranged from 8 to 19 cm. Conclusion: Normative data were provided and men presented greater scores than women. Good intrarater reliability was found and values of SEM and SDC were established. Clinicians must use both tests in clinical practice since different aspects of the upper quarter are assessed.
Highlights
Physical performance tests are simple tools that do not require great expertise to apply and are recommended as a method of screening subjects who may develop musculoskeletal injuries
Among the physical performance tests for the upper limbs, the Closed Kinetic Chain Upper Extremity Stability Test (CKCUEST) and the Upper Quarter Y Balance Test (UQYBT) are the most studied[3,4,5,6]
The primary purpose of the study was to describe reference values for the Closed Kinetic Chain Upper Extremity Stability Test and Upper Quarter Y Balance Test in a sample of Brazilian adults and to determine whether there were differences in both tests based on gender and age
Summary
Physical performance tests are simple tools that do not require great expertise to apply and are recommended as a method of screening subjects who may develop musculoskeletal injuries. These tests are used mainly in the sports environment, as they do not require expensive equipment and can be applied in varied situations[1,2]. Among the physical performance tests for the upper limbs, the Closed Kinetic Chain Upper Extremity Stability Test (CKCUEST) and the Upper Quarter Y Balance Test (UQYBT) are the most studied[3,4,5,6]. The number of touches presented a moderate to strong correlation with peak torque of the shoulder external/internal rotators in previous studies[10]
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