UMIN-ICDS Clinical Trial

Unique ID issued by UMIN UMIN000061785
Receipt number R000070709
Scientific Title The effects of calf raises with different muscle contraction patterns on the morphological characteristics of the Achilles tendon: Examination under low and high load conditions.
Date of disclosure of the study information 2026/06/03
Last modified on 2026/06/03 16:32:18

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Basic information

Public title

The effects of calf raises with different muscle contraction patterns on the morphological characteristics of the Achilles tendon: Examination under low and high load conditions.

Acronym

The effects of calf raises with different muscle contraction patterns on the morphological characteristics of the Achilles tendon: Examination under low and high load conditions.

Scientific Title

The effects of calf raises with different muscle contraction patterns on the morphological characteristics of the Achilles tendon: Examination under low and high load conditions.

Scientific Title:Acronym

The effects of calf raises with different muscle contraction patterns on the morphological characteristics of the Achilles tendon: Examination under low and high load conditions.

Region

Japan


Condition

Condition

Healthy adult

Classification by specialty

Adult

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

To examine the effects of concentric calf raises and ecsentric calf raises on the morphological characteristics of the Achilles tendon under different loading conditions (self-weight loading and 120% self-weight loading).

Basic objectives2

Efficacy

Basic objectives -Others


Trial characteristics_1


Trial characteristics_2


Developmental phase



Assessment

Primary outcomes

Morphology of the Achilles tendon

Key secondary outcomes

Ankle joint range of motion
Foot morphology


Base

Study type

Interventional


Study design

Basic design

Cross-over

Randomization

Randomized

Randomization unit

Individual

Blinding

Open -but 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

eccentric calf raises

Interventions/Control_2

concentric calf raises

Interventions/Control_3

Unintervention or normal calf raises

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

18 years-old <=

Age-upper limit

40 years-old >

Gender

Male and Female

Key inclusion criteria

Healthy university student

Key exclusion criteria

Achilles tendon pain
History of Achilles tendon disorder
Systemic disorders affecting collagen metabolism
Allergic reaction to echogel

Target sample size

18


Research contact person

Name of lead principal investigator

1st name Kazunori
Middle name
Last name Okamura

Organization

Prefectural University of Hiroshima

Division name

Faculty of Health and Welfare

Zip code

7230053

Address

1-1 Gakuen-cho, Mihara-shi, Hiroshima

TEL

0848601177

Email

k-okamura@pu-hiroshima.ac.jp


Public contact

Name of contact person

1st name Kazunori
Middle name
Last name Okamura

Organization

Prefectural University of Hiroshima

Division name

Faculty of Health and Welfare

Zip code

723-0053

Address

1-1 Gakuen-cho, Mihara-shi, Hiroshima

TEL

0848601177

Homepage URL


Email

k-okamura@pu-hiroshima.ac.jp


Sponsor or person

Institute

Prefectural University of Hiroshima

Institute

Department

Personal name



Funding Source

Organization

None

Organization

Division

Category of Funding Organization

Other

Nationality of Funding Organization



Other related organizations

Co-sponsor


Name of secondary funder(s)



IRB Contact (For public release)

Organization

The Ethics Committee of the prefectural university of hiroshima

Address

1-1 Gakuen-cho, Mihara-shi, Hiroshima

Tel

0848-60-1120

Email

k-okamura@pu-hiroshima.ac.jp


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 06 Month 03 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

Open public recruiting

Date of protocol fixation

2026 Year 06 Month 03 Day

Date of IRB

2026 Year 06 Month 01 Day

Anticipated trial start date

2026 Year 06 Month 03 Day

Last follow-up date

2026 Year 12 Month 31 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 06 Month 03 Day

Last modified on

2026 Year 06 Month 03 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/icdr_e/ctr_view.cgi?recptno=R000070709