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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.
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.
Secondary ID [1] 284050 0
none
Universal Trial Number (UTN)
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
muscle activation and movement pattern during active hip extension 291106 0
Condition category
Condition code
Musculoskeletal 291450 291450 0 0
Normal musculoskeletal and cartilage development and function

Intervention/exposure
Study type
Observational
Patient registry
False
Target follow-up duration
Target follow-up type
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.
Intervention code [1] 288741 0
Not applicable
Comparator / control treatment
none
Control group
Uncontrolled

Outcomes
Primary outcome [1] 291433 0
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.
Timepoint [1] 291433 0
Real-time sEMG measurements of the GM and HMG during the active hip joint extension in two positions.
Primary outcome [2] 291554 0
The sEMG registration of resting and functional activity of the GM and HMG in two positions.
Timepoint [2] 291554 0
Real-time sEMG measurements of the GM and HMG during the active hip joint extension in two positions.
Secondary outcome [1] 306760 0
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.
Timepoint [1] 306760 0
Real-time sEMG measurements of the GM and HMG during the active hip joint extension in two positions.
Secondary outcome [2] 307069 0
Assessment of the correlations of functional sEMG activity of the GM and HMG with their ART during hip extension in both positions.
Timepoint [2] 307069 0
Real-time sEMG measurements of the GM and HMG during the active hip joint extension in two positions.

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.
Minimum age
18 Years
Maximum age
25 Years
Sex
Both males and females
Can healthy volunteers participate?
Yes
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.

Study design
Purpose
Screening
Duration
Cross-sectional
Selection
Defined population
Timing
Prospective
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.

Recruitment
Recruitment status
Completed
Date of first participant enrolment
Anticipated
4/11/2013
Actual
4/11/2013
Date of last participant enrolment
Anticipated
31/01/2014
Actual
31/01/2014
Date of last data collection
Anticipated
Actual
Sample size
Target
64
Accrual to date
Final
Recruitment outside Australia
Country [1] 5811 0
Poland
State/province [1] 5811 0
Opole

Funding & Sponsors
Funding source category [1] 288678 0
University
Name [1] 288678 0
Public Higher Medical Professional School
Country [1] 288678 0
Poland
Primary sponsor type
University
Name
Public Higher Medical Professional School
Address
Katowicka Street 68, 45-060 Opole
Country
Poland
Secondary sponsor category [1] 287387 0
None
Name [1] 287387 0
Address [1] 287387 0
Country [1] 287387 0

Ethics approval
Ethics application status
Approved
Ethics committee name [1] 290527 0
Ethics Committee of Public Higher Medical Professional School
Ethics committee address [1] 290527 0
Katowicka Street 68, 45-060 Opole
Ethics committee country [1] 290527 0
Poland
Date submitted for ethics approval [1] 290527 0
01/10/2013
Approval date [1] 290527 0
30/10/2013
Ethics approval number [1] 290527 0

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.
Trial website
Trial related presentations / publications
Public notes

Contacts
Principal investigator
Name 46102 0
Dr Tomasz Halski
Address 46102 0
Department of Physiotherapy, Public Higher Professional School, Katowicka Street 68, 45-060 Opole
Country 46102 0
Poland
Phone 46102 0
+48 774 423 524
Fax 46102 0
+48 774 423 524
Email 46102 0
[email protected]
Contact person for public queries
Name 46103 0
Tomasz Halski
Address 46103 0
Department of Physiotherapy, Public Higher Professional School, Katowicka Street 68, 45-060 Opole
Country 46103 0
Poland
Phone 46103 0
+48 774 423 524
Fax 46103 0
+48 774 423 524
Email 46103 0
[email protected]
Contact person for scientific queries
Name 46104 0
Tomasz Halski
Address 46104 0
Department of Physiotherapy, Public Higher Professional School, Katowicka Street 68, 45-060 Opole
Country 46104 0
Poland
Phone 46104 0
+48 774 423 524
Fax 46104 0
+48 774 423 524
Email 46104 0
[email protected]

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No Supporting Document Provided



Results publications and other study-related documents

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