NCT06459258

Throwing Velocity and Patient Reported Outcomes in Elite Level Handball Players After Completion of Shoulder-Pacemaker Strength Training

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 14 (actual)
• Sponsor: Sportorthopädie Zentrum in Wien Hietzing · Academic / Other
• Sex: Male
• Age: 18 Years
• Healthy volunteers: Accepted

Summary

The successful application of treatment protocols using motion-triggered neuromuscular electrical stimulation (NMES) for treatment-resistant functional posterior shoulder instability was recently demonstrated. The purpose of this study is to evaluate the concept of a motion-triggered NMES training protocol through objective clinical outcome parameters and its impact on external rotational (ER) shoulder strength and throwing velocity in healthy, elite-level handball players.

Detailed description

The aim of this study is to evaluate the concept of a motion-triggered NMES training protocol through objective clinical outcome parameters and its impact on external rotational (ER) shoulder strength and throwing velocity in healthy, elite-level handball players. It is hypothesized that a 6-week motion-triggered NMES shoulder strengthening training protocol in elite-level handball players would lead to an increase in throwing velocity due to an improved motor ability and ER shoulder strength.

Conditions

• Shoulder Dislocation

Interventions

Type	Name	Description
OTHER	Motion-triggered NMES training protocol	Experimental group subjects undergo a motion-triggered NMES shoulder strengthening training program (3x/week, 30 minutes for 6 weeks) using the Shoulder Pacemaker (NCS Lab Srl, Modena, Italy), a motion activated stimulation device to strengthen muscular disbalances. This is accomplished through varying neuromuscular electrical stimulation intensity based on the angle of motion of the arm producing subtetanic contraction and provoking supraspinal neural adaptations. Electrode placement: electrode 1, inferior to the scapular spine (infraspinatus, teres minor, + posterior deltoid); electrode 2, medial to the medial scapula border (lower trapezius + rhomboids) . Sets x repetitions: 3x20 Levels: Level 1-3; Exercise 1: L1: Supported row, L2: Front raises in 45°, L3 Front raises (thumbs up) Exercise 2: L1: Resisted front raises, L2: Crossbody resisted raises, L3: Crossbody; forehand swing; Exercise 3: L1: Rear dealt fly, L2: Single arm resisted row, L3: Underhand volleyball
OTHER	Non-Motion-triggered NMES training protocol	Arm Description: Subjects of the control group undergo a conventional standardized strength training program (3x/week, 30 minutes for 6 weeks) with concentric, eccentric, and functional training exercises.

Timeline

• Start date: 2023-03-01
• Primary completion: 2024-02-07
• Completion: 2024-06-07
• First posted: 2024-06-14
• Last updated: 2024-06-14

Locations

1 site across 1 country: Austria