Online citations, reference lists, and bibliographies.
← Back to Search

Precision Markedly Attenuates Repetitive Lift Capacity

Brooke Collier, Laura Holland, D. McGhee, J. Sampson, A. Bell, P. Stapley, H. Groeller
Published 2014 · Mathematics, Medicine

Cite This
Download PDF
Analyze on Scholarcy
Share
This study investigated the effect of precision on time to task failure in a repetitive whole-body manual handling task. Twelve participants were required to repetitively lift a box weighing 65% of their single repetition maximum to shoulder height using either precise or unconstrained box placement. Muscle activity, forces exerted at the ground, 2D body kinematics, box acceleration and psychophysical measures of performance were recorded until task failure was reached. With precision, time to task failure for repetitive lifting was reduced by 72%, whereas the duration taken to complete a single lift and anterior deltoid muscle activation increased by 39% and 25%, respectively. Yet, no significant difference was observed in ratings of perceived exertion or heart rate at task failure. In conclusion, our results suggest that when accuracy is a characteristic of a repetitive manual handling task, physical work capacity will decline markedly. Practitioner Summary: The capacity to lift repetitively to shoulder height was reduced by 72% when increased accuracy was required to place a box upon a shelf. Lifting strategy and muscle activity were also modified, confirming practitioners should take into consideration movement precision when evaluating the demands of repetitive manual handling tasks.
This paper references
10.1016/S0079-6123(06)65019-X
Dimensional reduction in sensorimotor systems: a framework for understanding muscle coordination of posture.
L. Ting (2007)
10.1080/00140139108964836
Acceptable weights and physiological costs of performing combined manual handling tasks in restricted postures.
S. Gallagher (1991)
Nonfatal Occupational Injuries and Illnesses Requiring Days Away from Work, 2011
U. S. Department of Labor. (2012)
10.1080/00140139308967940
Revised NIOSH equation for the design and evaluation of manual lifting tasks.
T. Waters (1993)
10.1080/00140138908966066
Effects on load handling of restricted and unrestricted shelf opening clearances.
Anil Mital (1989)
Quantitative Dynamic Measures of Physical
W. S. 236–246. Marras (2010)
MaximumWeights and Work Loads Acceptable to Male Industrial Workers.
S. H. Snook (1970)
10.3200/35-09-003
Variation in Limb Support Influences the Time to Task Failure for a Postural Contraction
Tejin Yoon (2009)
10.1037/H0055392
The information capacity of the human motor system in controlling the amplitude of movement.
P. M. Fitts (1954)
10.1152/JN.00232.2002
Task differences with the same load torque alter the endurance time of submaximal fatiguing contractions in humans.
S. Hunter (2002)
10.1152/JAPPLPHYSIOL.01053.2007
A comparison of central aspects of fatigue in submaximal and maximal voluntary contractions.
J. Taylor (2008)
International Standard 11228-3: Ergonomics -Manual Handling -Part 3: Handling of Low Loads at High Frequency
(2003)
10.1113/jphysiol.2001.013385
Central and peripheral mediation of human force sensation following eccentric or concentric contractions
R. Carson (2002)
10.1113/jphysiol.2007.139477
Muscle fatigue: what, why and how it influences muscle function
R. Enoka (2008)
10.1016/0169-8141(88)90007-8
Lifting In Stooped And Kneeling Postures: Effects On Lifting Capacity, Metabolic Costs, And Electromyography Of Eight Trunk Muscles
S. Gallagher (1988)
Employing Stoop and Squat Technique.
B K. (1995)
Micro hydro power: promising solution for off-grid renewable energy source
Tanbhir Hoq (2011)
10.1016/J.ERGON.2006.04.003
Upper body kinematic and low-back kinetic responses to precision placement challenges and cognitive distractions during repetitive lifting
T. A. Beach (2006)
10.1080/00140138508963125
Influence of restricted space on manual materials handling.
C. Drury (1985)
10.1016/0022-4375(89)90055-8
Consideration of load asymmetry, placement restrictions, and type of lifting in a design database for industrial workers
Anil Mital (1989)
Section VII: Chapter 1, Back Disorders and Injuries
(1991)
10.1080/00140139.2014.887788
Physiological and biomechanical responses to a prolonged repetitive asymmetric lifting activity
Jay P. Mehta (2014)
10.1016/J.JSR.2004.12.001
Physical limitations and musculoskeletal complaints associated with work in unusual or restricted postures: a literature review.
S. Gallagher (2005)
10.1249/01.MSS.0000048831.15016.2A
Concurrent validation of the OMNI perceived exertion scale for resistance exercise.
R. Robertson (2003)
10.1152/japplphysiol.90398.2008
Time to task failure and muscle activation vary with load type for a submaximal fatiguing contraction with the lower leg.
S. Hunter (2008)
10.1097/BRS.0b013e3181ce1201
Quantitative Dynamic Measures of Physical Exposure Predict Low Back Functional Impairment
W. Marras (2010)
10.1016/S0021-9290(96)00172-8
The biomechanics of low back injury: implications on current practice in industry and the clinic.
S. McGill (1997)
Concentric Contractions.
D. B. Chaffin (1973)
10.1016/s0031-9406(05)61482-4
Introduction to Surface Electromyography
G. D. P. M. DipTP (1998)
10.1016/0014-4886(74)90019-3
Estimation of weights and tensions and apparent involvement of a "sense of effort".
D. McCloskey (1974)
10.1016/S1529-9430(03)00082-2
Partitioning the contributing role of biomechanical, psychosocial, and individual risk factors in the development of spine loads.
K. Davis (2003)
10.1016/S1050-6411(97)00032-1
The effect of light manual precision work on shoulder muscles--an EMG analysis.
H. Sporrong (1998)
10.1007/s00422-009-0349-y
A neural mechanism of synergy formation for whole body reaching
P. Morasso (2009)
10.1097/00007632-200108150-00016
Within-Subject Variability in Low Back Load in a Repetitively Performed, Mildly Constrained Lifting Task
J. V. van Dieën (2001)
10.1080/00222899809601319
Effects of repetitive lifting on kinematics: inadequate anticipatory control or adaptive changes?
J. V. van Dieën (1998)
Investigation of Avionics Box Precision Placement Using Motion Capturing and Thermal Imaging Techniques
D. Stambolian (2011)
10.1097/00007632-199711150-00013
The Effect of Fatigue on Multijoint Kinematics and Load Sharing During a Repetitive Lifting Test
P. Sparto (1997)
10.1080/0002889738506892
A longitudinal study of low-back pain as associated with occupational weight lifting factors.
D. Chaffin (1973)
10.1097/00007632-199812010-00011
Estimation of Trunk Muscle Forces and Spinal Loads During Fatiguing Repetitive Trunk Exertions
P. Sparto (1998)
10.1152/JAPPLPHYSIOL.00635.2002
Changes in muscle activation can prolong the endurance time of a submaximal isometric contraction in humans.
S. Hunter (2003)
Nonfatal Occupational Injuries and Illnesses Requiring Days Away from Work
(2011)
10.1080/0002889708506296
Maximum weights and work loads acceptable to male industrial workers. A study of lifting, lowering, pushing, pulling, carrying, and walking tasks.
S. Snook (1970)
10.1097/00007632-200212010-00003
The Impact of Mental Processing and Pacing on Spine Loading: 2002 Volvo Award in Biomechanics
K. Davis (2002)
10.1080/00140139.2013.869359
The influence of precision requirements and cognitive challenges on upper extremity joint reaction forces, moments and muscle force estimates during prolonged repetitive lifting
C. Joseph (2014)
10.1007/BF00357625
Physiological and subjective responses to maximal repetitive lifting employing stoop and squat technique
K. Hagen (2004)
10.1152/PHYSREV.2001.81.4.1725
Spinal and supraspinal factors in human muscle fatigue.
S. Gandevia (2001)
10.1016/0003-6870(74)90024-6
Maximum weights and work loads acceptable to female workers.
S. Snook (1974)
10.1016/0268-0033(95)93701-T
Influence of weight and frequency on thigh and lower-trunk motion during repetitive lifting employing stoop and squat techniques.
K. Hagen (1995)



This paper is referenced by
Semantic Scholar Logo Some data provided by SemanticScholar