An observational study in Shoulder Pain, sponsored by Universidade do Porto. Status unknown at 3 sites in Portugal. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2021-01-06.
Sponsored by Universidade do Porto · Observational
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)
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.
707 studies on the registry are indexed under Shoulder Pain; 152 are open to participants now.
This study's planned enrollment of 90 is close to the median of 82 across 130 observational studies indexed under Shoulder Pain.
Browse Shoulder Pain studies →Universidade do Porto is the lead sponsor of 170 studies on the registry; 52 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Athletes from sports organizations involved in competitive events and non-athletes from the general community/scholarly community
Exclusion Criteria:
Volleyball attackers involved in competitive events ≥ 2 years, ≥18 years of age
Behavioral: Chronic exposure to unilateral overhead sports activity
Swimmers involved in competitive events ≥ 2 years, ≥18 years of age
Behavioral: Chronic exposure to bilateral overhead sports activity
Persons not regularly involved in sports activities or occupational overhead tasks (e.g. construction workers), ≥18 years of age
Behavioral: Not exposed
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).
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").
People not engaged in regular sports competition/exercise training.
Side-to-side differences in the unilateral seated shot put test (normalized distance thrown, in centimeters)
The unilateral seated shot put test consists of pushing (not throwing) at shoulder height a \~3kg medicine ball as far and forward as possible while keeping the axial skeleton in contact with a wall, knees bent at a right angle, feet flat on the floor, and the non-testing arm resting on the lap.
Time frame: Through study completion, an average of 1 year
Side-to-side differences in the upper quarter Y balance test (normalized maximal distance reached in each direction, in centimeters)
The upper quarter Y balance test is performed through the assistance of a testing device (Y-Balance Test Kit), with the subject stabilizing his/her body weight with the upper extremity being tested while performing maximal reaching efforts with the free hand in three directions: medial, superolateral, and inferolateral.
Time frame: Through study completion, an average of 1 year
Side-to-side differences in 3-dimensional scapular angular displacement (in degrees)
The angular displacement of the scapula in the 3 planes of orientation: lateral/medial (upward/downward) rotation, protraction/retraction (internal/external rotation), anterior/posterior tilting.
Time frame: Through study completion, an average of 1 year
Side-to-side differences in 3-dimensional humerus angular displacement (in degrees)
The angular displacement of the humerus in the 3 planes of orientation: plane of elevation, elevation/depression, axial rotation.
Time frame: Through study completion, an average of 1 year
Side-to-side differences in 3-dimensional thoracic angular displacement (in degrees)
The angular displacement of the thorax in the 3 planes of orientation: flexion/extension, lateral rotation (inclination), axial rotation.
Time frame: Through study completion, an average of 1 year
Side-to-side differences in the upper quarter Y balance test (total excursion, in centimeters)
total excursion = sum of the 3 normalized reach distances, in centimeters
Time frame: Through study completion, an average of 1 year
Side-to-side differences in the upper quarter Y balance test (overall performance score, in centimeters)
overall performance or composite score = average score of the 3 normalized reach distances, in centimeters.
Time frame: Through study completion, an average of 1 year
This study is status unknown, as verified in Jan 2021. You cannot join it, but the record below documents what was studied.
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Universidade do Porto