Immediate Effects of Flossband and Mobilization With Movement on Shoulder Mobility in Volleyball Athletes

Condition(s) studied

Investigational drug(s) / intervention(s)

Floss Band Group (FBG): Participants in this arm will perform the standardized Floss Band (FBG) protocol. While seated with the shoulder at 90° abduction, the researcher will apply a compressive elastic band made of 100% polymer gel (T.P.E), measuring 210 cm in length, 5 cm in width, and 1.3 mm in thickness. The first anchor is placed two fingers medial to the acromion, and the band is wrapped around the shoulder until the second anchor at the end of the band is fixed. After the application, the participant will perform sport-specific movements (spike and serve) for 2 minutes. Following the completion of the compression period, the band will be removed. Assessments will be conducted at baseline and immediately post-intervention, including shoulder range of motion using a digital inclinometer, perception of movement fluency using a Visual Analogue Scale (VAS), and sport-specific performance tests (One-arm Seated Shot Put Test and Functional Throwing Performance Index).

Mobilization with Movement (MWM) Group: Participants in this arm will perform the standardized Mobilization with Movement (MWM) protocol. While seated in a chair with back support and hips, knees, and ankles at 90° flexion, the researcher will stabilize the scapula with one hand and apply a posterolateral glide to the anterior humeral head with the other hand during active shoulder elevation in the scapular plane. The intervention consists of 3 sets of 10 repetitions, with a 1-minute rest interval between sets. Assessments will be conducted at baseline and immediately post-intervention, including shoulder range of motion using a digital inclinometer, perception of movement fluency using a Visual Analogue Scale (VAS), and sport-specific performance tests (One-arm Seated Shot Put Test and Functional Throwing Performance Index).

Study summary

The goal of this clinical trial is to learn if Floss Band application works as effectively as mobilization with movement (MWM) to improve shoulder mobility in volleyball athletes. It will also explore whether these techniques affect athletes' perception of movement fluency and sport-specific performance.

The main questions it aims to answer are:

Does Floss Band application immediately improve shoulder range of motion in volleyball athletes? Does Floss Band application change the perception of movement fluency compared to MWM? Does Floss Band application impact sport-specific performance tests compared to MWM?

Participants will:

Be randomly assigned to receive either Floss Band or mobilization with movement Have their shoulder mobility, perception of movement, and sport performance tested before and immediately after the intervention

Eligibility

Primary outcome measure(s)

• Shoulder Range of Motion - External Rotation — Baseline (prior to intervention, Day 1) and post-intervention (Day 1)
  Glenohumeral external rotation (dominant shoulder) will be measured using the Baseline® Digital Inclinometer. The participant will lie in the supine position with the shoulder abducted to 90°, elbow flexed to 90°, and forearm in neutral. The inclinometer will be placed on the anterior mid-forearm, and the participant will perform active external rotation. Three measurements will be taken, and the mean value will be calculated for analysis.
• Shoulder Range of Motion - Internal Rotation, Flexion, Abduction, Horizontal Abduction — Baseline (prior to intervention, Day 1) and post-intervention (Day 1)
  Internal rotation: same supine position, inclinometer on posterior mid-forearm. Flexion and abduction: seated with hips, knees, and ankles at 90° flexion; inclinometer on anterior humerus for flexion, lateral mid-humerus for abduction. Horizontal abduction: supine, shoulder 90° abduction, 90° external rotation, elbow 90° flexion; inclinometer on anterior mid-humerus. Three measurements per movement will be recorded and averaged.

Trial sites (1)

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