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Trial registered on ANZCTR
Registration number
ACTRN12614000244606
Ethics application status
Approved
Date submitted
23/02/2014
Date registered
7/03/2014
Date last updated
7/03/2014
Type of registration
Retrospectively registered
Titles & IDs
Public title
Muscles activation in the movement pattern during hip joint extension.
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Scientific title
Electromyographic analysis of the sequence of gluteus maximus and hamstring muscles activation in the movement pattern of hip extension in male and female young healthy adults: a prospective, cross–sectional study.
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Secondary ID [1]
284050
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none
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
muscle activation and movement pattern during active hip extension
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Condition category
Condition code
Musculoskeletal
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0
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Normal musculoskeletal and cartilage development and function
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Intervention/exposure
Study type
Observational
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Patient registry
False
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Target follow-up duration
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Target follow-up type
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Description of intervention(s) / exposure
The aim of the study was to determine the order of muscle recruitment during the active hip joint extension in particular positions in young healthy adults during two different testing positions.
First position – the subjects were asked to lie lateral on a therapeutic table with pelvis stabilization, the tested lower extremity at neutral position suspended in Universal Exercise Unit (UEU) in accordance with kinesiotherapeutic rules to exclude the force of gravity and to ensure a facilitation conditions. Second position – the subjects were asked to lie prone on therapeutic table with pelvis stabilization, feet shoulder–width apart, arms at their sides and head was in mild line in standardized test position for prone hip extension testing.
Subjects were instructed to perform hip extension at their natural speed, repeating five trials of each movement from starting position with 5–s rest between every trial. Subjects were given a 5–min rest period between the positions. All subjects presented right–leg dominance, defined according to which leg they used for kicking.
The lower extremity subjected to measurement was chosen randomly as follows: 36 right and 28 left lower extremities were tested. We performed a one–stage simple randomisation using a computer–generated random numbers, which were hidden in sequentially numbered envelopes and then selected by subjects. The researcher, who allocated the participants into the study, marking one of two cards with "X" for the left or with "Y" for the right lower extremity.
The measurement was performed by a dual–channel sEMG NeuroTrac MyoPlus device integrated with computer software for digital analysis and report creation. All electrodes were placed in pairs with distance of 1.5–2.0 cm from each other and parallel to the muscle fibers over the centre part of the GM and HMG muscles’ bellies according to recommendations of the Surface Electromyography for the Non-Invasive Assessment of Muscles (SENIAM) and International Society of Electrophysiology and Kinesiology (ISEK).
Functional sEMG activity of the GM and HMG were recorded in real–time to analyse the order of muscle activation pattern. Recruitment time was considered necessary time to attain 75% value of the average muscle activation during hip extension in two positions. The mean onset of muscle activity for each set was calculated from the five trials within that set in both positions separately. Mean values of resting and functional GM and HMG muscles’ bioelectrical activity were given according to the Root Mean Square (RMS) algorithm expressed in microvolts.
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Intervention code [1]
288741
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Not applicable
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Comparator / control treatment
none
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Control group
Uncontrolled
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Outcomes
Primary outcome [1]
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The surface electromyography (sEMG) measurement of the average recruitment time (ART) required by the gluteus maximus (GM) and hamstring muscle group (HMG) to perform a movement of hip joint extension in two positions.
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Assessment method [1]
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Timepoint [1]
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Real-time sEMG measurements of the GM and HMG during the active hip joint extension in two positions.
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Primary outcome [2]
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The sEMG registration of resting and functional activity of the GM and HMG in two positions.
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Assessment method [2]
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Timepoint [2]
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Real-time sEMG measurements of the GM and HMG during the active hip joint extension in two positions.
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Secondary outcome [1]
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Comparison of the results (resting and functional sEMG activity of the GM and HMG in two positions, as well as ART of the GM and HMG in two positions) obtained in the female and male groups in two positions.
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Assessment method [1]
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Timepoint [1]
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Real-time sEMG measurements of the GM and HMG during the active hip joint extension in two positions.
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Secondary outcome [2]
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Assessment of the correlations of functional sEMG activity of the GM and HMG with their ART during hip extension in both positions.
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Assessment method [2]
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Timepoint [2]
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Real-time sEMG measurements of the GM and HMG during the active hip joint extension in two positions.
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Eligibility
Key inclusion criteria
1. Lack of lower limb injuries;
2. Lack of lower back pain;
3. Correct hip joint function during testing;
4. Normal muscle elasticity;
5. Lack of dysfunctions of the spine;
6. Normal pelvis position;
7. Lack of contraindications for sEMG measurement;
8. Age range of 18 to 25 yrs;
9. Signed agreement of participant.
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Minimum age
18
Years
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Maximum age
25
Years
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Sex
Both males and females
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Can healthy volunteers participate?
Yes
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Key exclusion criteria
1. Lower limb injuries;
2. Lower back pain;
3. Painful hip during testing;
4. Decreased muscle elasticity;
5. Scoliosis of the spine;
6. Pathological pelvis position;
7. Contraindications for sEMG measurement;
8. Age under 18 and/or over 25 yrs;
9. Non-agreement of participant.
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Study design
Purpose
Screening
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Duration
Cross-sectional
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Selection
Defined population
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Timing
Prospective
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Statistical methods / analysis
The software applied in the statistical analysis was Statistica 10.0 (Stat Soft Inc., USA). Standard deviation, minimum and maximum values were calculated for measurable variables. All the variables analysed were checked through the Shapiro-Wilk test to establish a distribution type. The t-test was applied for independent samples to compare muscle recruitment time. For this pilot analyses included over 60 subjects the team had to use parametric tests (over 30 in each group). The level of p<0.05 was established as statistically significant.
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Recruitment
Recruitment status
Completed
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Date of first participant enrolment
Anticipated
4/11/2013
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Actual
4/11/2013
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Date of last participant enrolment
Anticipated
31/01/2014
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Actual
31/01/2014
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Date of last data collection
Anticipated
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Actual
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Sample size
Target
64
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Accrual to date
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Final
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Recruitment outside Australia
Country [1]
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Poland
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State/province [1]
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Opole
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Funding & Sponsors
Funding source category [1]
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University
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Name [1]
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Public Higher Medical Professional School
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Address [1]
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Katowicka Street 68, 45-060 Opole
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Country [1]
288678
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Poland
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Primary sponsor type
University
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Name
Public Higher Medical Professional School
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Address
Katowicka Street 68, 45-060 Opole
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Country
Poland
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Secondary sponsor category [1]
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None
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Name [1]
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Address [1]
287387
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Country [1]
287387
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
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Ethics Committee of Public Higher Medical Professional School
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Ethics committee address [1]
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Katowicka Street 68, 45-060 Opole
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Ethics committee country [1]
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Poland
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Date submitted for ethics approval [1]
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01/10/2013
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Approval date [1]
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30/10/2013
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Ethics approval number [1]
290527
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Summary
Brief summary
Motor patterns (MP) are applied in numerous methods of modern physiotherapy as an element of diagnostics or therapy (i.e. functional diagnostics, manual therapy, PNF method). The aim of the study was to determine the order of muscle recruitment during hip joint extension in particular positions. The time recruitment of the hamstring and the gluteus maximus was assessed by the means of sEMG. The sequence of muscle recruitment in female and male group was also taken into consideration. The correct motor pattern of hip joint extension has been a subject matter of research, which stated the order of muscles activation in this movement. It is assumed that proper leg extension in the hip joint in a healthy person is initiated by the hamstring, then the gluteus maximus activates, and
at the end – erector spinae. The order of muscle activation in patients with different pathologies influencing the hip joint biomechanics should be also assessed.
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Trial website
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Trial related presentations / publications
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Public notes
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Contacts
Principal investigator
Name
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Dr Tomasz Halski
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Address
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Department of Physiotherapy, Public Higher Professional School, Katowicka Street 68, 45-060 Opole
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Country
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Poland
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Phone
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+48 774 423 524
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Fax
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+48 774 423 524
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Email
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[email protected]
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Contact person for public queries
Name
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Dr Tomasz Halski
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Address
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Department of Physiotherapy, Public Higher Professional School, Katowicka Street 68, 45-060 Opole
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Country
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Poland
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Phone
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+48 774 423 524
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Fax
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+48 774 423 524
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Email
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[email protected]
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Contact person for scientific queries
Name
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Dr Tomasz Halski
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Address
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Department of Physiotherapy, Public Higher Professional School, Katowicka Street 68, 45-060 Opole
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Country
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Poland
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Phone
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+48 774 423 524
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Fax
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+48 774 423 524
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Email
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[email protected]
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No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
Documents added manually
No documents have been uploaded by study researchers.
Documents added automatically
No additional documents have been identified.
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