UMIN-CTR Clinical Trial

Unique ID issued by UMIN UMIN000061624
Receipt number R000070504
Scientific Title Oscillatory dumbbell training outperforms shoulder mobilization for improving strength, proprioception, and function in female swimmers with impingement syndrome: a randomized controlled trial
Date of disclosure of the study information 2026/05/24
Last modified on 2026/05/19 03:56:59

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Basic information

Public title

Oscillatory dumbbell training outperforms shoulder mobilization for improving strength, proprioception, and function in female swimmers with impingement syndrome: a randomized controlled trial

Acronym

Oscillatory dumbbell training outperforms shoulder mobilization for improving strength, proprioception, and function in female swimmers with impingement syndrome: a randomized controlled trial

Scientific Title

Oscillatory dumbbell training outperforms shoulder mobilization for improving strength, proprioception, and function in female swimmers with impingement syndrome: a randomized controlled trial

Scientific Title:Acronym

Oscillatory dumbbell training outperforms shoulder mobilization for improving strength, proprioception, and function in female swimmers with impingement syndrome: a randomized controlled trial

Region

Asia(except Japan)


Condition

Condition

pre-post-follow up

Classification by specialty

Rehabilitation medicine Adult

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

The primary objective of this randomized controlled trial was to compare the immediate and one week (retention) effects of a single session of oscillatory dumbbell training versus shoulder mobilization on shoulder rotator cuff strength, proprioception, and upper quarter function in female swimmers diagnosed with subacromial impingement syndrome. A secondary objective was to determine whether any between group differences observed immediately after the intervention would persist for one week.

Basic objectives2

Safety,Efficacy

Basic objectives -Others


Trial characteristics_1


Trial characteristics_2


Developmental phase



Assessment

Primary outcomes

Isometric shoulder rotator strength, Shoulder proprioception (active joint position sense)

Key secondary outcomes

Individual components of upper quarter function


Base

Study type

Interventional


Study design

Basic design

Parallel

Randomization

Randomized

Randomization unit

Individual

Blinding

Single blind -investigator(s) and assessor(s) are blinded

Control

No treatment

Stratification


Dynamic allocation


Institution consideration


Blocking


Concealment



Intervention

No. of arms

3

Purpose of intervention

Treatment

Type of intervention

Other

Interventions/Control_1

Oscillatory Dumbbell Training (ODT)

Interventions/Control_2

Shoulder Mobilization (MOB)

Interventions/Control_3

Control (CON)

Interventions/Control_4


Interventions/Control_5


Interventions/Control_6


Interventions/Control_7


Interventions/Control_8


Interventions/Control_9


Interventions/Control_10



Eligibility

Age-lower limit

20 years-old <=

Age-upper limit

30 years-old >=

Gender

Female

Key inclusion criteria

Eligible participants were female competitive or recreational swimmers aged between 18 and 35 years who had a clinical diagnosis of subacromial impingement syndrome of the dominant shoulder. The diagnosis was confirmed by a sports medicine physician based on the presence of a painful arc during shoulder abduction between 60 and 120, tenderness on palpation of the rotator cuff tendons, and a positive Hawkins Kennedy impingement test. Additionally, participants were required to have at least 130 of active shoulder abduction in the frontal plane and to have been swimming regularly for a minimum of one year with at least three training sessions per week. All participants provided written informed consent, and those under 18 years of age also provided parental consent.

Key exclusion criteria

Potential participants were excluded if they had a history of traumatic shoulder dislocation, fracture, or surgery involving the shoulder joint, or any evidence of full thickness rotator cuff tear, glenohumeral instability, or labral pathology confirmed by physical examination or imaging. Other exclusion criteria included scapular dyskinesis or thoracic kyphosis diagnosed by a physiatrist, cervical radiculopathy or other neurological disorders affecting the upper extremity, rheumatic diseases or degenerative joint changes, and any history of corticosteroid injection or physiotherapy targeting the shoulder or neck within the past six months. Individuals with skin conditions over the shoulder or scapular region, those who were unwilling to comply with the study protocol, and those with any contraindication to manual therapy or vibration exercise were also excluded.

Target sample size

90


Research contact person

Name of lead principal investigator

1st name Golnaz
Middle name
Last name Tajik Ahamadabad

Organization

Azad university

Division name

IAUETB

Zip code

1491115719

Address

Mirdamad, South Razan Street, Hesari Street, Keshvari Sport complex, Tehran, Iran.

TEL

989336487376

Email

golnaztajik1311@yahoo.com


Public contact

Name of contact person

1st name Golnaz
Middle name
Last name Tajik Ahamadabad

Organization

Islamic Azad University, East Tehran Branch, Tehran

Division name

IAUETB

Zip code

1491115719

Address

Mirdamad, South Razan Street, Hesari Street, Keshvari Sport complex, Tehran, Iran.

TEL

989336487376

Homepage URL


Email

golnaztajik1311@yahoo.com


Sponsor or person

Institute

Self funding

Institute

Department

Personal name



Funding Source

Organization

Self funding

Organization

Division

Category of Funding Organization

Self funding

Nationality of Funding Organization



Other related organizations

Co-sponsor


Name of secondary funder(s)



IRB Contact (For public release)

Organization

phyical education

Address

Mirdamad, South Razan Street, Hesari Street, Keshvari Sport complex, Tehran, Iran.

Tel

989336487376

Email

amirehsanbakhshandeh@gmail.com


Secondary IDs

Secondary IDs

NO

Study ID_1


Org. issuing International ID_1


Study ID_2


Org. issuing International ID_2


IND to MHLW



Institutions

Institutions



Other administrative information

Date of disclosure of the study information

2026 Year 05 Month 24 Day


Related information

URL releasing protocol


Publication of results

Unpublished


Result

URL related to results and publications


Number of participants that the trial has enrolled


Results


Results date posted


Results Delayed


Results Delay Reason


Date of the first journal publication of results


Baseline Characteristics


Participant flow


Adverse events


Outcome measures


Plan to share IPD


IPD sharing Plan description



Progress

Recruitment status

Preinitiation

Date of protocol fixation

2026 Year 05 Month 01 Day

Date of IRB

2026 Year 02 Month 19 Day

Anticipated trial start date

2026 Year 05 Month 04 Day

Last follow-up date

2026 Year 05 Month 13 Day

Date of closure to data entry


Date trial data considered complete


Date analysis concluded



Other

Other related information



Management information

Registered date

2026 Year 05 Month 19 Day

Last modified on

2026 Year 05 Month 19 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000070504