StretchNCT04448288
Time-based Effects of Stretching on Hamstrings Muscle Strength
A study testing Static stretching in people with Stretch, run by King Saud University at 1 site in Saudi Arabia.
Trial summary
Stretching is reported to have detrimental effects on strength and thus avoided prior to strength training session. Do stretching indeed decreases muscle strength? To examine the time course (immediate, 10- and 20-min post stretching) for the effects of 2, 4, and 8 min long duration of static-stretching (SS) on… Read more about this study
- Who is it for?
- Ages 24 to 30 yearsHealthy volunteers can take part
- Conditions the study is for
- Stretch
- What is being tested?
- Static stretching
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 14 participants
- Where
- 1 siteSaudi Arabia
- Study dates
- 30 Jan 2019to 15 Apr 2019
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 24 to 30 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Subjects used to engage in 1 to 5 hours of physical activity per week. They were not doing stretching exercises regularly.
Who cannot join
- Subjects having any current injury specific to lower limb joints or current neuromuscular disease were excluded from the study.
Trial locations and contacts
1 site in 1 country.
About this study
Stretching is reported to have detrimental effects on strength and thus avoided prior to strength training session. Do stretching indeed decreases muscle strength? To examine the time course (immediate, 10- and 20-min post stretching) for the effects of 2, 4, and 8 min long duration of static-stretching (SS) on isometric maximum voluntary contraction (MVC) force of hamstring muscles.
Read the detailed description
OBJECTIVE: To examine the time course (immediate, 10- and 20-min post stretching) for the effects of 2, 4, and 8 min long duration of static-stretching (SS) on isometric maximum voluntary contraction (MVC) force of hamstring muscles.
METHODS: Pretest-posttest experimental design. Total of 14 subjects with mean age 25 years participated in three experimental trials on three different days. On day-I for static-stretching for 2 minutes (SS2), day-II for 4 minutes (SS4), and day-III for 8 minutes (SS8). Testing was conducted before (pre), immediately after (post), and at 10 and 20 min post stretching. MVCF was measured using strain gauze as the main outcome measure.
- Conditions
- Stretch
- Being tested
- Static stretching
- Keywords
- Stretching, Muscle strength, Hamstring Muscles
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Static stretchingOther
Static stretchings were performed by subjects that involved varied repetitions of 30-s static-stretches and 20-s relax period.
| Study group | Role | What they receive |
|---|---|---|
| Hamstring Group | Experimental | Pretest-posttest experimental design. Subjects participated in three experimental trials on three different days. On day-I for static-stretching for 2 minutes (SS2), day-II for 4 minutes (SS4), and day-III for 8 minutes (SS8). Testing was conducted before (pre), immediately after (post), and at 10 and 20 min post stretching. MVCF was measured using strain gauze as main outcome measure. The SS trials involved varied repetitions of 30-s static-stretches and 20-s relax period. MVC force was assessed. Receives: Other: Static stretching |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in Maximum voluntary contraction force (MVCF) before and after stretching
Change in Isometric strength (MVCF) was measured before and after stretching using strain gauge
Measured: MVCF was measured on 3 different days with each day separated by 3-4 days.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted25 Jun 2020
- Study start30 Jan 2019
- Primary completion15 Apr 2019
- Study completion15 Apr 2019
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for StretchStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Other
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 14 participants (actual)
Sponsor and investigators
- Lead sponsor
- King Saud University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Masood Khan, King Saud University
- Investigators
- Masood Khan, MPTh, Principal investigator, Rehabilitation research chair
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04448288
- Sponsor's protocol ID
- RRC-2019-003
- Status last verified
- Jun 2020
- First submitted
- 6 May 2020
- Last updated
- 25 Jun 2020
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 25 Jun 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Time-based Effects of Stretching on Hamstrings Muscle Strength
- ClinicalTrials.gov ID
- NCT04448288
- Acronym / sponsor ID
- RRC-2019-003
- Conditions
- Stretch
- Keywords
- Stretching, Muscle strength, Hamstring Muscles
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 14 participants (actual)
- Lead sponsor
- King Saud UniversityUniversity, hospital or other
- Study start
- 30 Jan 2019 (actual)
- Primary completion
- 15 Apr 2019 (actual)
- Study completion
- 15 Apr 2019 (actual)
- First posted
- 25 Jun 2020 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Stretching is reported to have detrimental effects on strength and thus avoided prior to strength training session. Do stretching indeed decreases muscle strength? To examine the time course (immediate, 10- and 20-min post stretching) for the effects of 2, 4, and 8 min long duration of static-stretching (SS) on isometric maximum voluntary contraction (MVC) force of hamstring muscles.
Detailed description
OBJECTIVE: To examine the time course (immediate, 10- and 20-min post stretching) for the effects of 2, 4, and 8 min long duration of static-stretching (SS) on isometric maximum voluntary contraction (MVC) force of hamstring muscles.
METHODS: Pretest-posttest experimental design. Total of 14 subjects with mean age 25 years participated in three experimental trials on three different days. On day-I for static-stretching for 2 minutes (SS2), day-II for 4 minutes (SS4), and day-III for 8 minutes (SS8). Testing was conducted before (pre), immediately after (post), and at 10 and 20 min post stretching. MVCF was measured using strain gauze as the main outcome measure.
Study design
- Primary purpose
- Other
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Hamstring Group | Experimental | Other: Static stretchingPretest-posttest experimental design. Subjects participated in three experimental trials on three different days. On day-I for static-stretching for 2 minutes (SS2), day-II for 4 minutes (SS4), and day-III for 8 minutes (SS8). Testing was conducted before (pre), immediately after (post), and at 10 and 20 min post stretching. MVCF was measured using strain gauze as main outcome measure. The SS trials involved varied repetitions of 30-s static-stretches and 20-s relax period. MVC force was assessed. |
Who may qualify
- Ages
- 24 to 30 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (1 listed)
- Subjects used to engage in 1 to 5 hours of physical activity per week. They were not doing stretching exercises regularly.
Key exclusion criteria (1 listed)
- Subjects having any current injury specific to lower limb joints or current neuromuscular disease were excluded from the study.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Static stretchingStatic stretchings were performed by subjects that involved varied repetitions of 30-s static-stretches and 20-s relax period. | Other | Hamstring Group |
Primary outcome
Change in Maximum voluntary contraction force (MVCF) before and after stretching
Time frame: MVCF was measured on 3 different days with each day separated by 3-4 days.
Change in Isometric strength (MVCF) was measured before and after stretching using strain gauge
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 25 Jun 2020.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Masood Khan, MPTh principal investigator
Rehabilitation research chair
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Static stretching in people with Stretch, run by King Saud University at 1 site in Saudi Arabia.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 25 Jun 2020. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Saudi Arabia. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Change in Maximum voluntary contraction force (MVCF) before and after stretching (time frame: MVCF was measured on 3 different days with each day separated by 3-4 days.). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 25 Jun 2020.