How Real-Time Muscle Feedback Affects Shoulder Muscles During Seated Band Exercise

The Effect of Real-Time EMG Biofeedback on Selective Activation of the Infraspinatus and Posterior Deltoid During TheraBand Shoulder External Rotation Exercise in a Sitting Position

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

CRIS

Registry ID

KCT0010767

Enrollment

Registered

2025-07-16

Start date

2025-06-16

Completion date

Unknown

Last updated

2025-07-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Interventions

Behavioral : In this study, 30 healthy adults performed isometric shoulder external rotation exercises in a seated position using a yellow TheraBand (light resistance). The intervention included two c

Eligibility

Sex/Gender

Male

Inclusion criteria

Inclusion criteria: - Healthy adult males aged between 20 and 35 years - No pain or functional impairment in the shoulder joint - Full range of motion of the shoulder with the ability to perform external rotation exercises - Normal scapulohumeral rhythm visually confirmed by two licensed physical therapists - Voluntary agreement to participate after receiving sufficient explanation about the study purpose and procedures

Exclusion criteria

Exclusion criteria: - History of shoulder disorders, surgery, or trauma within the past 6 months - Presence of neurological conditions or neuromuscular disorders - Participation in physical therapy or strength training within the past year - Prior experience with electromyographic (EMG) biofeedback training - Skin conditions or hypersensitivity at the electrode attachment sites - Musculoskeletal pain or functional problems in the upper limbs or shoulders

Design outcomes

Secondary

Measure	Time frame
Comparison of selective muscle activation ratio between the infraspinatus and posterior deltoid with and without visual EMG biofeedback	—

Primary

Measure	Time frame
Muscle activity (%MVIC) of the infraspinatus and posterior deltoid	—

Countries

Korea, Republic of

Contacts

Public ContactOnebin ?Lim

Mokpo Science University

onebin007@naver.com+82-61-270-2742

Outcome results