Reliability of SEMG measurements for trunk muscles during lifting variable loads in healthy subjects.

OBJECTIVE The reliability of surface electromyography (SEMG) derived parameters is of high importance, but there is distinct lack of studies concerning the reliability during dynamic contractions. Particularly, the similarity index reliability has not been investigated during functional task yet. The purpose of this study was to evaluate the reliability of trunk muscle activities measured by means of surface electromyography during lifting tasks over repeated trials within a day. METHODS Seven volunteers were assessed twice a day. SEMG signals were recorded bilaterally from seven trunk muscles. Intra class correlation coefficients (ICC) and standard error of similarity index, magnitude and timing were calculated. RESULTS Investigation of ICC and correlation between trials showed that similarity index (ICC 0.73-0.97, correlation 0.6-0.95) is more reliable and repeatable than muscles magnitude (ICC 0.41-0.69, correlation 0.54-0.65) and it's timing (ICC 0.41-0.69, correlation 0.31-0.74) while timing had the least reliability. CONCLUSION Similarity index can be mentioned as an appropriate motor control index and evaluation of muscle recruitment pattern should be done by considering similarity index and magnitude.

[1]  Adamantios Arampatzis,et al.  Choosing EMG parameters: comparison of different onset determination algorithms and EMG integrals in a joint stability study. , 2004, Clinical biomechanics.

[2]  Linda McLean,et al.  The reliability of surface EMG recorded from the pelvic floor muscles , 2009, Journal of Neuroscience Methods.

[3]  O. Vasseljen,et al.  Effect of Core Stability Exercises on Feed-Forward Activation of Deep Abdominal Muscles in Chronic Low Back Pain: A Randomized Controlled Trial , 2012, Spine.

[4]  J. Ives,et al.  Sampling rate effects on surface EMG timing and amplitude measures. , 2003, Clinical biomechanics.

[5]  B. Murphy,et al.  The validity and reliability of surface EMG to assess the neuromuscular response of the abdominal muscles to rapid limb movement. , 2003, Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology.

[6]  D. Rafferty,et al.  Reliability study of tibialis posterior and selected leg muscle EMG and multi-segment foot kinematics in rheumatoid arthritis associated pes planovalgus , 2012, Gait & posture.

[7]  W. McKay,et al.  Neurophysiological assessment of lower-limb voluntary control in incomplete spinal cord injury , 2005, Spinal Cord.

[8]  A. J. Courtney,et al.  Visual search performance with complete and incomplete visual lobe areas. , 1996, Ergonomics.

[9]  R. Norman,et al.  Disability Resulting From Occupational Low Back Pain: Part II: What Do We Know About Secondary Prevention? A Review of the Scientific Evidence on Prevention After Disability Begins , 1996, Spine.

[10]  G. Horstmann,et al.  Reproducibility of electromyographic patterns in stretch-shortening type contractions , 2004, European Journal of Applied Physiology and Occupational Physiology.

[11]  N. Nishida,et al.  Diagnosis and Characters of Non-Specific Low Back Pain in Japan: The Yamaguchi Low Back Pain Study , 2016, PloS one.

[12]  D. Rosenbaum,et al.  Reliability of peroneal reaction time measurements. , 2000, Clinical biomechanics.

[13]  J. Cassisi,et al.  Assessment of lumbar EMG during static and dynamic activity in pain-free normals: Implications for muscle scanning protocols , 1995, Biofeedback and self-regulation.

[14]  A Plamondon,et al.  The comparison of wavelet- and Fourier-based electromyographic indices of back muscle fatigue during dynamic contractions: validity and reliability results. , 2008, Electromyography and clinical neurophysiology.

[15]  D. Farina,et al.  Effect of joint angle on EMG variables in leg and thigh muscles , 2001, IEEE Engineering in Medicine and Biology Magazine.

[16]  C. Assaiante,et al.  Developmental changes in compensatory responses to unexpected resistance of leg lift during gait initiation , 2002, Experimental Brain Research.

[17]  B. Larsson,et al.  Reproducibility of surface EMG during dynamic shoulder forward flexions: a study of clinically healthy subjects. , 1999, Clinical physiology.

[18]  Patricia A Shewokis,et al.  A time-frequency based electromyographic analysis technique for use in cerebral palsy. , 2007, Gait & posture.

[19]  G V Kondraske.  An elemental resource for the human-task interface. , 1995, International journal of technology assessment in health care.

[20]  C. Yi,et al.  EMG and kinematics analysis of the trunk and lower extremity during the sit-to-stand task while wearing shoes with different heel heights in healthy young women. , 2011, Human movement science.

[21]  Altered patterns of muscle activation during performance of four functional tasks in patients with shoulder disorders: interpretation from voluntary response index. , 2006, Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology.

[22]  Stephen T. Holgate,et al.  Reliability: What is it, and how is it measured? , 2000 .

[23]  G. Vanderstraeten,et al.  A Functional Subdivision of Hip, Abdominal, and Back Muscles During Asymmetric Lifting , 2001, Spine.

[24]  B. Larsson,et al.  Reproducibility of surface EMG variables and peak torque during three sets of ten dynamic contractions. , 1999, Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology.

[25]  Robert Stapleton,et al.  Three-dimensional Motion Analysis of the Lumbar Spine during “Free Squat” Weight Lift Training , 2007, The American journal of sports medicine.

[26]  G L Soderberg,et al.  A study of various normalization procedures for within day electromyographic data. , 1994, Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology.

[27]  J. R. Landis,et al.  The measurement of observer agreement for categorical data. , 1977, Biometrics.

[28]  M. Parnianpour,et al.  Reliability of electromyographic and torque measures during isometric axial rotation exertions of the trunk , 2003, Clinical Neurophysiology.

[29]  Winter Da,et al.  Pathologic gait diagnosis with computer-averaged electromyographic profiles. , 1984 .

[30]  P. Hodges,et al.  A comparison of computer-based methods for the determination of onset of muscle contraction using electromyography. , 1996, Electroencephalography and clinical neurophysiology.

[31]  J T Viitasalo,et al.  Reproducibility of measurements of selected neuromuscular performance variables in man. , 1980, Electromyography and clinical neurophysiology.

[32]  D. Ostry,et al.  Relationship between cocontraction, movement kinematics and phasic muscle activity in single-joint arm movement , 2001, Experimental Brain Research.

[33]  Shi Zhou,et al.  Electromechanical delay in isometric muscle contractions evoked by voluntary, reflex and electrical stimulation , 2004, European Journal of Applied Physiology and Occupational Physiology.

[34]  J. Fleiss,et al.  Intraclass correlations: uses in assessing rater reliability. , 1979, Psychological bulletin.

[35]  P. Hodges,et al.  Transversus abdominis and the superficial abdominal muscles are controlled independently in a postural task , 1999, Neuroscience Letters.

[36]  Herman Ramon,et al.  Test-retest reliability of wavelet - and Fourier based EMG (instantaneous) median frequencies in the evaluation of back and hip muscle fatigue during isometric back extensions. , 2008, Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology.

[37]  Sean Nicholson,et al.  The Assessment of Chronic Health Conditions on Work Performance, Absence, and Total Economic Impact for Employers , 2005, Journal of occupational and environmental medicine.

[38]  P. Cavanagh,et al.  Reliability of surface EMG measurements over 12 hours. , 2007, Journal of Electromyography & Kinesiology.

[39]  W. McKay,et al.  Analysis of sEMG during voluntary movement-part II: voluntary response index sensitivity , 2004, IEEE Transactions on Neural Systems and Rehabilitation Engineering.

[40]  I. Sarjanovic,et al.  Co-activation of ipsi- and contralateral muscle groups during contraction of ankle dorsiflexors , 1992, Journal of the Neurological Sciences.

[41]  S. Assadi.  Chronic Low Back Pain Frequency and its Risk Factors in Clinical and Office Staff of Hospitals , 2015 .

[42]  D. Farina,et al.  Geometrical factors in surface EMG of the vastus medialis and lateralis muscles. , 2000, Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology.

[43]  G. Forrest,et al.  Reliability of surface EMG as an assessment tool for trunk activity and potential to determine neurorecovery in SCI , 2014, Spinal Cord.

[44]  W. Marras,et al.  The Influence of Trunk Muscle Coactivity on Dynamic Spinal Loads , 1995, Spine.

[45]  W. McKay,et al.  Toward an objective interpretation of surface EMG patterns: a voluntary response index (VRI). , 2004, Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology.

[46]  A. Hunter,et al.  Reliability of Trunk Muscle Electromyography in the Loaded Back Squat Exercise , 2016, International Journal of Sports Medicine.

[47]  C. Richardson,et al.  Reliability of electromyographic power spectral analysis of back muscle endurance in healthy subjects. , 1996, Archives of physical medicine and rehabilitation.

[48]  Joy Conway,et al.  Professional articlesReliability: What is it, and how is it measured?Funding , 2000 .

[49]  François Hug,et al.  Can muscle coordination be precisely studied by surface electromyography? , 2011, Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology.

[50]  Trunk muscle fatigue in subjects with a history of low back pain and a group of healthy controls measured by similarity index. , 2011, Journal of back and musculoskeletal rehabilitation.

[51]  S M Lephart,et al.  The effect of sudden inversion stress on EMG activity of the peroneal and tibialis anterior muscles in the chronically unstable ankle. , 1997, The Journal of orthopaedic and sports physical therapy.

[52]  A. Sherwood,et al.  Reliability of surface electromyographic measurements from subjects with spinal cord injury during voluntary motor tasks. , 2005, Journal of rehabilitation research and development.

[53]  G Atkinson,et al.  Statistical Methods For Assessing Measurement Error (Reliability) in Variables Relevant to Sports Medicine , 1998, Sports medicine.

[54]  Carlo J. De Luca,et al.  The Use of Surface Electromyography in Biomechanics , 1997 .

[55]  A Garg,et al.  Revised NIOSH equation for the design and evaluation of manual lifting tasks. , 1993, Ergonomics.

[56]  J. Caro,et al.  A systematic review of low back pain cost of illness studies in the United States and internationally. , 2008, The spine journal : official journal of the North American Spine Society.

[57]  D. Pincivero,et al.  Gender and muscle differences in EMG amplitude and median frequency, and variability during maximal voluntary contractions of the quadriceps femoris. , 2000, Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology.

[58]  J. G. van Dijk,et al.  ‘Rules Of Conduct’: Some Practical Guidelines For Testing Motor-Nerve Conduction , 2000 .

[59]  L. A. Rozendaal,et al.  Reliability of force direction dependent EMG parameters of shoulder muscles for clinical measurements. , 2004, Clinical biomechanics.

[60]  L. Straker,et al.  Reliability of EMG measurements for trunk muscles during maximal and sub-maximal voluntary isometric contractions in healthy controls and CLBP patients. , 2004, Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology.