Differents Intensities of Passive Stretching on ROM, Neuromuscular and Performance in Soccer Players: A Blinded RCT
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ClinicalTrials.gov Identifier: NCT03150563 |
Recruitment Status : Unknown
Verified May 2017 by Wouber Hérickson de Brito Vieira, Universidade Federal do Rio Grande do Norte.
Recruitment status was: Recruiting
First Posted : May 12, 2017
Last Update Posted : May 12, 2017
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Condition or disease | Intervention/treatment | Phase |
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Contracture of Muscle, Thigh Muscle Rigidity Strain of Hamstring Muscle (Disorder) | Other: Passive static stretch | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 40 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Single (Investigator) |
Masking Description: | The randomization process of the sample will be carried out through the electronic website http://www.randomization.com, carried out by a subject external to the experimental and evaluation procedures. With this data, the site will generate a specific coding for each group and will randomly distribute the subjects into four groups: Control Group (GC), Experiment Group 1 (GE1), Experiment Group (GE2) and Experiment Group 3 (GE3). The distribution will be kept in an opaque and sealed envelope, being revealed only to P2 only at the time of intervention. The P1, who will carry out the measurements, will not know to which group the individual belongs. To maintain the "blinding" procedure of the study, each individual at the time of intervention will spend 10 minutes in the intervention room (being 4 minutes for preparation and 6 minutes for intervention) and each group will have a corresponding color for the convenience of P2 White, blue, green and yellow). |
Primary Purpose: | Treatment |
Official Title: | Effects of Different Intensities of Passive Static Stretching on Flexibility, Neuromuscular and Functional Performance in Soccer Athletes: A Blinded, Randomized Controlled Trial. |
Actual Study Start Date : | May 9, 2017 |
Estimated Primary Completion Date : | September 30, 2017 |
Estimated Study Completion Date : | November 30, 2017 |
Arm | Intervention/treatment |
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No Intervention: Control Group
The subjects of the CG will receive the same orientations of the other groups in relation to the importance of the routines of stretching activities, but during the study period, they will not be able to perform stretches during their day to day life.
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Experimental: Experimental Group 1
The experimental group 1 will have the sensation of "SENSATION SENSING WITHOUT DESCONFORT" as an intensity for the application of the passive stretch protocol.
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Other: Passive static stretch
Each experimental group will be submitted to 10 (ten) sessions, with three (3) weekly sessions of static passive stretching, with a 48 h interval between them. Each session will be performed 3 (three) maneuvers containing a duration of 30 seconds, this being the same rest time, performed in all experimental groups. |
Experimental: Experimental Group 2
The GE2 will have the feeling of "MAXIMUM DISORDER WITHOUT PAIN" as the as an intensity for the application of the passive stretch protocol.
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Other: Passive static stretch
Each experimental group will be submitted to 10 (ten) sessions, with three (3) weekly sessions of static passive stretching, with a 48 h interval between them. Each session will be performed 3 (three) maneuvers containing a duration of 30 seconds, this being the same rest time, performed in all experimental groups. |
Experimental: Experimental Group 3
GE3 will have the sensation of "MAXIMUM TOLERABLE PAIN" as the as an intensity for the application of the passive stretch protocol.
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Other: Passive static stretch
Each experimental group will be submitted to 10 (ten) sessions, with three (3) weekly sessions of static passive stretching, with a 48 h interval between them. Each session will be performed 3 (three) maneuvers containing a duration of 30 seconds, this being the same rest time, performed in all experimental groups. |
- Range of motion (ROM) [ Time Frame: 48 h after intervention ]The measurement will be performed in two positions: with hip flexed at 90 ° and with extended leg elevation, using goniometry for measurement.
- Pleasure after stretching program [ Time Frame: 1 minute after intervention ]Each volunteer will be asked shortly after each session what was the pleasure felt in achieving the sensation of stretching, which is indicated by the feeling scale.
- Pain after stretching session [ Time Frame: 1 minute after intervention ]Measurement from the visual analogue scale of 100 mm.
- Functional performance [ Time Frame: 48 h after intervention ]Evaluation of functional performance with measures of vertical jump and shuttle run
- Electromyographic responses of the hamstring [ Time Frame: 48 h after intervention ]Electromyographic responses of the hamstring muscles in performing knee extension and hip flexion
- Passive torque [ Time Frame: 48 h after intervention ]Isokinetic performance evaluation

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Ages Eligible for Study: | 18 Years to 35 Years (Adult) |
Sexes Eligible for Study: | Male |
Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
- (1) being male; (2) age range between 18 and 35 years of age; (3) Body Mass Index (BMI) between 19 and 27; (4) be a soccer player with 4 to 5x weekly training; (5) not participating in lower limb stretching programs; (6) no history of injury, trauma, previous surgeries and lower limb disease in the last 6 months; (7) absence of musculoskeletal, cardiorespiratory and neurological disorders that prevent the accomplishment of evaluation and treatment protocols; (8) not under the action of drugs that cause muscle relaxation or that may inhibit tonic muscle action (9) present a limitation of WMD (muscular shortening degree) with ischiatibial extensibility of less than 165 degrees of active extension of the knee with the hip Flexed at 90 °.
Exclusion Criteria:
- (1) initiate stretching practice involving LLLs in daily activities outside the collection site during the study period; (2) not performing any of the evaluation and / or intervention procedures; (3) discontinuance in participating in the research.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03150563
Contact: Ronan R Varela de Melo, Master | +5584991366307 | ronanriq@gmail.com | |
Contact: Glauko A Figueiredo, Master | +5584991366307 | ronanriq@gmail.com |
Brazil | |
Federal University of Rio Grande do Norte | Recruiting |
Natal, RN, Brazil, 59072-970 | |
Contact: Ronan R Varela de Melo, Master +5584991366307 ronanriq@gmail.com | |
Principal Investigator: Wouber H de Brito Vieira, PhD | |
Sub-Investigator: Bento J Abreu, PhD |
Principal Investigator: | Wouber H de Brito Vieira, PhD | Universidade Federal do Rio Grande do Norte |
Responsible Party: | Wouber Hérickson de Brito Vieira, Clinical Professor, Universidade Federal do Rio Grande do Norte |
ClinicalTrials.gov Identifier: | NCT03150563 |
Other Study ID Numbers: |
1.883.129 |
First Posted: | May 12, 2017 Key Record Dates |
Last Update Posted: | May 12, 2017 |
Last Verified: | May 2017 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Stretching Stretching sensation Isokinetic dynamometry Stretching load. |
Contracture Muscle Rigidity Joint Diseases Musculoskeletal Diseases Muscular Diseases |
Muscle Hypertonia Neuromuscular Manifestations Neurologic Manifestations Nervous System Diseases |