Clinical trial NCT02852707: Physical Performance and 3D Shoulder Kinematics of Asymptomatic Unilateral/Bilateral Overhead Athletes and Non-athletes
Official title: Physical Performance and 3D Shoulder Kinematics of Asymptomatic Unilateral/Bilateral Overhead Athletes and Non-athletes
Study type: OBSERVATIONAL
Overall status: UNKNOWN
Conditions: Shoulder Pain
Lead sponsor: Universidade do Porto
Sponsor class: OTHER
Collaborators: name: University of Lisbon
name: Instituto Politécnico de Leiria
First posted: 2016-08-02
Enrollment: 90
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Observational model: CASE_CONTROL
Time perspective: CROSS_SECTIONAL
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Athletes from sports organizations involved in competitive events and non-athletes from the general community/scholarly community

Brief 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.

Eligibility criteria: Inclusion Criteria:

* Perform at least 150 degrees of arm elevation

Exclusion Criteria:

* history of shoulder dislocation
* surgery in the upper extremity ≥ 6 months
* injury in the past month
* evident abnormalities in posture and movement of the upper body quadrant
* pain at the time of testing

Primary outcomes:
measure: Side-to-side differences in the unilateral seated shot put test (normalized distance thrown, in centimeters)
timeFrame: Through study completion, an average of 1 year
measure: Side-to-side differences in the upper quarter Y balance test (normalized maximal distance reached in each direction, in centimeters)
timeFrame: Through study completion, an average of 1 year
Secondary outcomes:
measure: Side-to-side differences in 3-dimensional scapular angular displacement (in degrees)
timeFrame: Through study completion, an average of 1 year
measure: Side-to-side differences in 3-dimensional humerus angular displacement (in degrees)
timeFrame: Through study completion, an average of 1 year
measure: Side-to-side differences in 3-dimensional thoracic angular displacement (in degrees)
timeFrame: Through study completion, an average of 1 year
measure: Side-to-side differences in the upper quarter Y balance test (total excursion, in centimeters)
timeFrame: Through study completion, an average of 1 year
measure: Side-to-side differences in the upper quarter Y balance test (overall performance score, in centimeters)
timeFrame: Through study completion, an average of 1 year
Other outcomes:
Locations:
city: Oeiras
country: Portugal
facility: Faculdade de Motricidade Humana, Universidade de Lisboa
state: Cruz-Quebrada
city: Leiria
country: Portugal
facility: Escola Superior de Saúde, Instituto Politécnico de Leiria
city: Porto
country: Portugal
facility: Faculdade de Desporto, Universidade do Porto
Study officials:
References: