A comparison of cluster-based exposure variation and exposure variation analysis to detect muscular adaptation in the shoulder joint to subsequent sessions of eccentric exercise during computer work.

The aim of this study was to compare the capability of a cluster-based exposure variation (C-EVA) with a conventional exposure variation analysis (EVA) to detect muscular adaptation in the shoulder joint to subsequent sessions of eccentric exercise (ECC). Eleven healthy subjects performed work with a computer mouse for 10min at three instants, i.e., before, immediately after, and 24h after ECC. The subjects repeated an identical procedure one week after the first session. Surface electromyography was recorded from descending and ascending part of the trapezius, deltoid anterior, and serratus anterior muscles. EVA and C-EVA were performed and their marginal distributions were extracted. A principal component analysis was applied to the marginal distributions of both EVA and C-EVA. Principal component difference was computed by subtraction of the corresponding principal components before the ECC from immediately after and 24h after the ECC. The first component extracted from C-EVA revealed an interactive effect between the sessions of ECC and instants whereas this effect was absent using the conventional EVA. The current study highlights the importance of a multivariate approach to analyze the potentially important changes in muscular activity in response to the repeated bout effect.

[1]  Thomas M Cook,et al.  Method for quantitatively assessing physical risk factors during variable noncyclic work. , 2003, Scandinavian journal of work, environment & health.

[2]  A. Stensdotter,et al.  Changes in the spatio‐temporal organization of the trapezius muscle activity in response to eccentric contractions , 2011, Scandinavian journal of medicine & science in sports.

[3]  D. Pyne.  Exercise-induced muscle damage and inflammation: a review. , 1994, Australian journal of science and medicine in sport.

[4]  Svend Erik Mathiassen,et al.  Variation in Muscle Activity Among Office Workers When Using Different Information Technologies at Work and Away From Work , 2013, Hum. Factors.

[5]  E. Asmussen,et al.  Positive and negative muscular work. , 1953, Acta physiologica Scandinavica.

[6]  J. Cholewicki,et al.  Trunk Muscle Recruitment Patterns in Patients With Low Back Pain Enhance the Stability of the Lumbar Spine , 2003, Spine.

[7]  L Straker,et al.  Examining pacing profiles in elite female road cyclists using exposure variation analysis , 2008, British Journal of Sports Medicine.

[8]  S E Mathiassen,et al.  Physiological comparison of three interventions in light assembly work: reduced work pace, increased break allowance and shortened working days , 1996, International archives of occupational and environmental health.

[9]  Gunnevi Sundelin,et al.  EMG trapezius muscle activity pattern in string players : Part I - Is there variability in the playing technique? , 2004 .

[10]  S E Mathiassen,et al.  Quantifying variation in physical load using exposure-vs-time data. , 1991, Ergonomics.

[11]  Pascal Madeleine,et al.  Sensory Mapping of the Upper Trapezius Muscle in Relation to Consecutive Sessions of Eccentric Exercise , 2012, Journal of strength and conditioning research.

[12]  J Winkel,et al.  Ergonomic effects of a management-based rationalization in assembly work - a case study. , 1996, Applied ergonomics.

[13]  Robert Tibshirani,et al.  Estimating the number of clusters in a data set via the gap statistic , 2000 .

[14]  Pascal Madeleine,et al.  Active pauses induce more variable electromyographic pattern of the trapezius muscle activity during computer work. , 2009, Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology.

[15]  Liviu Marina,et al.  Aspiration-Pneumonia Following Abscess of Steno’s Duct , 1896, The Journal of comparative medicine and veterinary archives.

[16]  P Madeleine,et al.  Mechanomyography and electromyography during and after fatiguing shoulder eccentric contractions in males and females , 2006, Scandinavian journal of medicine & science in sports.

[17]  B. Winkelstein.  Mechanisms of central sensitization, neuroimmunology & injury biomechanics in persistent pain: implications for musculoskeletal disorders. , 2004, Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology.

[18]  P. Herberts,et al.  Voluntary redistribution of muscle activity in human shoulder muscles. , 1995, Ergonomics.

[19]  G. Sjøgaard,et al.  Influence of frequency and duration of strength training for effective management of neck and shoulder pain: a randomised controlled trial , 2012, British Journal of Sports Medicine.

[20]  L Arendt-Nielsen,et al.  An investigation of how acute muscle pain modulates performance during computer work with digitizer and puck. , 2001, Applied ergonomics.

[21]  P. Madeleine,et al.  Supervised Neuro-fuzzy Biofeedback for Computer Users , 2011 .

[22]  L. Punnett,et al.  Work-related musculoskeletal disorders: the epidemiologic evidence and the debate. , 2004, Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology.

[23]  Pascal Madeleine,et al.  Gender effects on trapezius surface EMG during delayed onset muscle soreness due to eccentric shoulder exercise. , 2007, Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology.

[24]  M. Leary,et al.  Type I Error in Counseling Research: A Plea for Multivariate Analyses. , 1980 .

[25]  M. McHugh,et al.  Recent advances in the understanding of the repeated bout effect: the protective effect against muscle damage from a single bout of eccentric exercise , 2003, Scandinavian journal of medicine & science in sports.

[26]  P. Madeleine,et al.  Principle component analysis of exposure variation analysis during computer work at presence of delayed onset muscle soreness. , 2012, Work.

[27]  P. Clarkson,et al.  Muscle function after exercise-induced muscle damage and rapid adaptation. , 1992, Medicine and science in sports and exercise.

[28]  P. Clarkson,et al.  Muscle damage following repeated bouts of high force eccentric exercise. , 1995, Medicine and science in sports and exercise.

[29]  Francesco Felici.  Neuromuscular responses to exercise investigated through surface EMG. , 2006, Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology.

[30]  Pascal Madeleine,et al.  Effects of eccentric exercise on trapezius electromyography during computer work with active and passive pauses. , 2009, Clinical biomechanics.

[31]  G M Hägg,et al.  Normalization of surface EMG amplitude from the upper trapezius muscle in ergonomic studies - A review. , 1995, Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology.

[32]  Svend Erik Mathiassen,et al.  ITKids part II: variation of postures and muscle activity in children using different information and communication technologies. , 2011, Work.

[33]  M. Latash,et al.  Muscle synergies during shifts of the center of pressure by standing persons , 2003, Experimental Brain Research.

[34]  Svend Erik Mathiassen,et al.  Job enlargement and mechanical exposure variability in cyclic assembly work , 2004, Ergonomics.

[35]  L. Arendt-Nielsen,et al.  Induction and assessment of experimental muscle pain. , 1995, Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology.

[36]  Rolph E. Anderson,et al.  Multivariate Data Analysis: Text and Readings , 1979 .

[37]  R Kadefors,et al.  Consequences of trapezius relaxation on the distribution of shoulder muscle forces: an electromyographic study. , 1998, Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology.

[38]  S. Mathiassen,et al.  Cluster-based exposure variation analysis , 2013, BMC Medical Research Methodology.

[39]  Jaap H van Dieën,et al.  Postural sway parameters in seated balancing; their reliability and relationship with balancing performance. , 2010, Gait & posture.

[40]  A Plamondon,et al.  Evaluation of a hybrid system for three-dimensional measurement of trunk posture in motion. , 2007, Applied ergonomics.

[41]  Karl H.E. Kroemer,et al.  Ergonomics: How to Design for Ease and Efficiency , 1993 .

[42]  L. Arendt-Nielsen,et al.  Dynamic shoulder dynamometry: a way to develop delay onset muscle soreness in shoulder muscles. , 2006, Journal of biomechanics.

[43]  P. Mork,et al.  The effect of delayed onset of muscle soreness on habitual trapezius activity. , 2011, European journal of pain.

[44]  J. Riley,et al.  The influence of endurance exercise on delayed onset muscle soreness. , 2002, The Journal of sports medicine and physical fitness.

[45]  L M Straker,et al.  A comparison of posture and muscle activity during tablet computer, desktop computer and paper use by young children , 2008, Ergonomics.

[46]  Alain Delisle,et al.  The effect of sampling frequency on EMG measures of occupational mechanical exposure. , 2005, Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology.

[47]  Pascal Madeleine,et al.  Following ergonomics guidelines decreases physical and cardiovascular workload during cleaning tasks , 2012, Ergonomics.