NCT02852707

Physical Performance and 3D Shoulder Kinematics of Asymptomatic Unilateral/Bilateral Overhead Athletes and Non-athletes

• Status: Unknown
• Phase: —
• Study type: Observational
• Enrollment: 90 (estimated)
• Sponsor: Universidade do Porto · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Accepted

Summary

This study compares the performance and 3-dimensional shoulder kinematics between sides in unilateral overhead-throwers (volleyball attackers), bilateral overhead athletes (swimmers) and non-athletes during two physical performance measures of the upper extremity, one in an open kinetic chain position (unilateral seated shot put test) and the other in a closed kinetic chain position (upper quarter Y balance test)

Detailed description

3-dimensional shoulder kinematics (e.g., scapular angular position/displacement) at key events of each test will be described and compared across sides and groups. For the unilateral seated shot put test, the events are based on humeral motion: a) initiation of humeral motion, b) maximal humeral flexion, c) end of humeral motion. For the upper quarter Y balance test the events are the a) initiation of free hand motion on "GO", b) maximal reach on the medial direction, c) maximal reach on superolateral direction, and d) maximal reach on the inferolateral direction (kinematics measured on the stance upper extremity). The best of 3 maximal-effort trials on each side will be used for analysis. Warm-up exercises and two submaximal practice trials will be performed for preparation for maximal efforts and familiarization with the tests. A rest period of at least one minute between trials will be given to guarantee good physiological conditions to maximally perform. Further resting time will be allowed, if necessary, upon request of the participant.

Conditions

• Shoulder Pain

Interventions

Type	Name	Description
BEHAVIORAL	Chronic exposure to unilateral overhead sports activity	Overhead sports athletes that have been chronically exposed (≥ 2 years) predominantly to specific unilateral overhead movement patterns of the dominant extremity ("throwing arm"), such as throwing or hitting a ball ("asymmetrical overhead sports).
BEHAVIORAL	Chronic exposure to bilateral overhead sports activity	Overhead sports athletes that have been chronically exposed (≥ 2 years) predominantly to bilateral overhead movement patterns of the upper extremities, such as swimmers ("symmetrical overhead sports").
BEHAVIORAL	Not exposed	People not engaged in regular sports competition/exercise training.

Timeline

• Start date: 2018-06-01
• Primary completion: 2021-04-01
• Completion: 2021-07-01
• First posted: 2016-08-02
• Last updated: 2021-01-06

Locations

3 sites across 1 country: Portugal