- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01379105
Electromyographic Responses by Static Stretching and Neural Mobilization
Electromyographic Responses of Sedentary Students Submitted to Static Stretching and Neural Mobilization
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
This study was approved by the Committee for Ethics in Research with Humans of the Faculty of Medical Sciences (FACIME) (protocol number 145/09).
The group included students with the absence of neural, muscular and skeletal-associated problems and who were non-obese, according to established body mass index (BMI) criteria. Participants were excluded if they had metabolic disease or neuro-musculo-skeletal problems, practiced certain physical activities, presented pain during maintenance of the position for electromyographic response collection or otherwise did not fulfill the terms of the agreement with the researcher.
In the first stage, the researcher conducted an anamnesis of the individuals to obtain information about their dietary habits (Vasconcelos, 1995), medicines being used, pathological history and physical activity, according to the Baecke Questionnaire (Florindo, Latorre, 2003). In the second stage, the subjects' heights and body mass were measured for body mass index (BMI) evaluation using a Filizola 0-150 kg clinical scale (with a precision of 0.1 kg) and a mechanical 0-190 cm stadiometer (with a precision of 0.5 cm), following the recommendations of the International Society for the Advancement of Kinanthropometry (Marfell-Jonnes et al., 2006).
For the electromyography measurements, the subject was positioned in dorsal decubitus on a São Paulo Institute (ISP) model 4040 couch, and the researcher performed hip flexion and knee extension until tissue resistance, at which point the volunteer reported the sensation of "discomfort combined with pain'' by pressing a trigger button, and the signal was recorded for 2 seconds after this point. The speed with which the movements were made was slow and gradual, because, according to reports from Tanaka and Farah (2007), for the same degree of the range of motion, a greater stretching speed generates a higher impulse frequency in the afferent fibers near the terminal, such that a more intense reflex response is promoted.
The electrical activity of the femoral bicep muscle of the right thigh was recorded by a four channel EMG system with using superficial bipolar active electrodes (pre-amplified) with acquisition software and signal processing. The sampling frequency was 2,000 Hz, and the amplifier had a high-pass filter at 20 Hz and a low-pass filter at 500 Hz; a 12-bit analogical converter and computer completed the system.
In both interventions (SSG and NMG), the perception of strength was evaluated using the Perceived Strength and Flexibility Scale (PERFLEX)which presents five levels of intensity, varying from 0 to 110, with five corresponding verbal descriptors, so that the evaluated individual can point to the description of their perception corresponding to the amplitude of movement performed.
In the SSG group, the subject was positioned in dorsal decubitus, and the researcher performed hip flexion with the knee extended passively and held for 30 seconds; this type of stretching corresponds to the maintenance of increased amplitude posture, without surpassing the maximum movement limit, three times with an interval of 10 seconds between the repetitions (Nelson and Bandy, 2005). In the NMG group, the subject was positioned in dorsal decubitus, and the researcher performed hip flexion with the knee extended passively and performed 30 oscillations of plantar-to-dorsal flexion for one minute. In the SSG group, the subject was positioned in dorsal decubitus, and the researcher performed hip flexion with the knee extended passively and held for 30 seconds; this type of stretching corresponds to the maintenance of increased amplitude posture, without surpassing the maximum movement limit, three times with an interval of 10 seconds between the repetitions (Nelson and Bandy, 2005). In the NMG group, the subject was positioned in dorsal decubitus, and the researcher performed hip flexion with the knee extended passively and performed 30 oscillations of plantar-to-dorsal flexion for one minute.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
Piauí
-
Teresina, Piauí, Brazil, 64079-330
- College Santo Agostinho
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- students with the absence of neural, muscular and skeletal-associated problems
- who were non-obese, according to established body mass index
Exclusion Criteria:
- if they had metabolic disease
- neuro-musculo-skeletal problems,
- practiced certain physical activities,
- presented pain during maintenance of the position for electromyographic response collection or otherwise did not fulfill the terms of the agreement with the researcher.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Other: electromyography
The electrical activity of the femoral bicep muscle of the right thigh was recorded by a four channel EMG system with using superficial bipolar active electrodes (pre-amplified) with acquisition software and signal processing.
The sampling frequency was 2,000 Hz, and the amplifier had a high-pass filter at 20 Hz and a low-pass filter at 500 Hz; a 12-bit analogical converter and computer completed the system
|
In the neural mobilization group, the subject was positioned in dorsal decubitus, and the researcher performed hip flexion with the knee extended passively and performed 30 oscillations of plantar-to-dorsal flexion for one minute
Other Names:
In the static stretching group, the subject was positioned in dorsal decubitus, and the researcher performed hip flexion with the knee extended passively and held for 30 seconds; this type of stretching corresponds to the maintenance of increased amplitude posture, without surpassing the maximum movement limit, three times with an interval of 10 seconds between the repetitions.
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
electromyography response
Time Frame: four seconds to take the signal
|
For the electromyography measurements, the researcher performed hip flexion and knee extension until tissue resistance, at which point the volunteer reported the sensation of "discomfort combined with pain'' by pressing a trigger button, and the signal was recorded for 2 seconds after this point.
The speed with which the movements were made was slow and gradual, for the same degree of the range of motion, a greater stretching speed generates a higher impulse frequency in the afferent fibers near the terminal, such that a more intense reflex response is promoted.
|
four seconds to take the signal
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Flexibility effort
Time Frame: 30 seconds
|
In both interventions (neural mobilization - NMG and static stretching - SSG), the perception of stretching was evaluated using the Perceived Strength and Flexibility Scale (PERFLEX), which presents five levels of intensity, varying from 0 to 110, with five corresponding verbal descriptors, so that the evaluated individual can point to the description of their perception corresponding to the amplitude of movement performed: 0 to 30, "normal"; 31 to 60, "strain"; 61 to 80, "discomfort"; 81 to 90, "bearable pain"; and 91 to 110, "strong pain".
|
30 seconds
|
Collaborators and Investigators
Investigators
- Principal Investigator: rauena Lopes, Mst, Euro American Network Human Kinetics
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 0111
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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