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Physiological Effects Of Micropauses In Isometric Handgrip Exercise

S. Byström, S. Mathiassen, C. Fransson-Hall
Published 2004 · Medicine

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SummaryThe physiological response to continuous and intermittent handgrip exercise was evaluated. Three experiments were performed until exhaustion at 25% of maximal voluntary contraction (MVC): experiment 1, continuous handgrip (CH) (n = 8); experiment 2, intermittent handgrip with 10-s rest pause every 3 min (IH) (n=8); and experiment 3, as IH but with electrical stimulation (ES) of the forearm extensors in the pauses (IHES) (n=4). Before, during, and after exercise, recordings were made of heart rate (HR), arterial blood pressure (BP), exercising forearm blood flow, and concentrations of potassium [K+] and lactate [La−] in venous blood from both arms. The electromyogram (EMG) of the exercising forearm extensors and perceived exertion were monitored during exercise. Before and up to 24 h after exercise, observations were made of MVC, of force response to electrical stimulation and of the EMG response to a 10-s test contraction (handgrip) at 25% of the initial MVC. Maximal endurance time (ttim) was significantly longer in IH (23.1 min) than in CH (16.2 min). The ES had no significant effect ontlim. During exercise, no significant differences were seen between CH and IH in blood flow, venous [K+] and [La−], or EMG response. The HR and BP increased at the same rate in CH and IH but, because of the longer duration of IH, the levels at exhaustion were higher in this protocol. The subjects reported less subjective fatigue in IH. During recovery, return to normal MVC was slower after CH (24 h) than after IH (4 h). However, the frequency content of the EMG during the 10-s test contractions was still reduced 24 h after IH, but only 4 h after CH. This may be explained by the larger amount of potassium lost up to the first hour of recovery in IH. None of the measured physiological parameters could provide a satisfactory explanation, either of the 43% difference intlim between CH and IH, or of the sense of relief reported by all subjects during the short rest pauses in IH. Therefore, a plausible explanation was that the prolongation oftlim in IH may have been related to differences at a sensory level. It was concluded that short rest periods, if introduced in exercise with long cycle-times, could give an immediate sense of relief, postponing the subjective threshold of fatigue. Thus the results of this study provided experimental support for the hypothesis that the introduction of micropauses may create an increased risk of musculoskeletal disorders.
This paper references
10.1152/jappl.1986.61.2.421
Fatigue of intermittent submaximal voluntary contractions: central and peripheral factors.
B. Bigland-ritchie (1986)
THE CIRCULATIORY EFFECTS OF SUSTAINED VOLUNTARY MUSCLE CONTRACTION.
A. Lind (1964)
Potassium, lactate, and water fluxes in human quadriceps muscle during static contractions.
B. Saltin (1981)
The relationship of intermittent isometric exercise to fatigue of hand grip.
M. O. Mundale (1970)
10.1042/cs0650247
Haemodynamic and metabolic effects of alpha-adrenoceptor blockade with phentolamine at rest and during forearm exercise.
O. Hartling (1983)
Physiological and electromyographic response to repetitive handgrip exercise
E Milerad (1985)
10.1080/00140139108964889
Quantifying variation in physical load using exposure-vs-time data.
S. Mathiassen (1991)
10.1093/occmed/37.1.100
Repetition strain injury--a recent review.
D. Chatterjee (1987)
10.1111/j.1748-1716.1991.tb09128.x
Potassium homeostasis during and following exhaustive submaximal static handgrip contractions.
S. Byström (1991)
10.1093/acprof:oso/9780195092424.001.0001
Research Methods in Occupational Epidemiology
H. Checkoway (1989)
10.1007/BF00417254
Recovery following exhaustive dynamic exercise in the human biceps muscle
G. Kroon (2004)
10.1007/BF00580699
Electromyographic fatigue analysis based on the number of zero crossings
G. Hägg (1981)
10.1249/00005768-198205000-00012
Psychophysical bases of perceived exertion.
G. A. Borg (1982)
10.1177/001872088602800308
Repetitive Trauma Disorders: Job Evaluation and Design
T. Armstrong (1986)
Muscle BF during isometric activity and its relation to muscle fatigue
G Sjogaard (1988)
10.1152/jappl.1981.51.1.1
Muscular endurance and surface electromyogram in isometric and dynamic exercise.
M. Hagberg (1981)
10.1152/ajprenal.1978.234.4.F261
Intracellular activities of sodium and potassium.
M. Civan (1978)
10.1111/j.1748-1716.1986.tb08002.x
Intramuscular pressure, EMG and blood flow during low-level prolonged static contraction in man.
G. Sjøgaard (1986)
10.1007/BF00698869
Ermittlung von Erholungspausen für statische Arbeit des Menschen
W. Rohmert (2004)
Ergonomic aspects of biomechanics
RJ Whitney (1973)
Electrical stimulation of the human forearm extensors as an indicator of handgrip fatigue and recovery
Bystrrm SEG (1991)
10.1111/j.1475-097X.1981.tb00890.x
Circulatory response to static muscle contractions in three different muscle groups
Å. Kilbom (1981)
Der Einfluss von Arbeitsgrrsse , Pausenl / inge und Pausenverteilung auf die Ermiidung bei statischer Halte - arbeit
M Mundale (1935)
Ergonomic aspects of biomechanics. In: NIOSH (ed) The industrial environment - its evaluation and control. US Government Printing Office, Washington DC
ER Tichauer (1973)
10.5271/sjweh.2344
Prevalence of epicondylitis and tenosynovitis among meatcutters.
P. Roto (1984)
10.1007/BF00705037
Physiological response in the forearm during and after isometric intermittent handgrip
S. Byström (2004)
10.1113/jphysiol.1953.sp004926
The measurement of volume changes in human limbs.
R. J. Whitney (1953)
10.1097/00008483-198810000-00009
Hemodynamic, Ventilatory and Metabolic Effects of Light Isometric Exercise in Patients With Chronic Heart Failure
H. K. Reddy (1988)
10.4135/9781412961288.n273
Nonparametric Statistics for the Behavioral Sciences
Bernice W. Polemis (1959)
10.1007/BF00422582
A study of fatigue during repetitive static work performed in two different segmental positions
J. Kahn (1984)
10.1038/icb.1962.19
The circulation in forearm skin and muscle during adrenaline infusions.
S. Skinner (1962)
10.1002/mus.880070902
Changes in muscle contractile properties and neural control during human muscular fatigue.
B. Bigland-ritchie (1984)
10.1113/jphysiol.1958.sp006019
The source of blood samples withdrawn from deep forearm veins via catheters passed upstream from the median cubital vein.
D. Coles (1958)
10.5271/sjweh.2795
Endurance limit of force in long-term intermittent static contractions.
M. Björkstén (1977)
10.1055/s-2007-1024982
An improved flow injection method for determination of lactate during exercise studies.
Yngve Bergqvist (1988)



This paper is referenced by
Perceived fatigue related to work
E. Åhsberg (1998)
Fatigue at the Workplace: Measurement and Temporal Development
Marcus Yung (2016)
10.1518/001872006779166389
Muscular Fatigue and Endurance During Intermittent Static Efforts: Effects of Contraction Level, Duty Cycle, and Cycle Time
H. Iridiastadi (2006)
11 Postures , Movements , and Other Factors
D. Colombini (2004)
10.3233/WOR-152146
The effect of grip force, stroke rotation and frequency on discomfort for a torqueing tasks.
Farheen Bano (2015)
Quantifying Localized Muscle Fatigue of the Forearm during Simulations of High Pressure Cleaning Lance Tasks
Sandra Quinones-Vientos (2005)
10.1016/j.apergo.2018.04.013
The Ipswich Microbreak Technique to alleviate neck and shoulder discomfort during microscopic procedures.
Ananth Vijendren (2018)
Working postures in dental practitioners and dental students : relationships between posture, seating, and muscle activity.
Amar Gandavadi (2008)
10.3390/ijerph16203844
Methods in Experimental Work Break Research: A Scoping Review
André Scholz (2019)
10.1002/JOR.20458
Upper limb muscle imbalance in tennis elbow: A functional and electromyographic assessment
O. Alizadehkhaiyat (2007)
10.1016/J.ERGON.2005.02.007
Spanish version of the Swedish Occupational Fatigue Inventory (SOFI): Factorial replication, reliability and validity
J. L. G. Gutiérrez (2005)
10.1016/j.jelekin.2019.02.004
The influence of simultaneous handgrip and wrist force on forearm muscle activity.
Davis A Forman (2019)
10.1016/J.JELEKIN.2004.04.002
Quantitative assessment of upper limb muscle fatigue depending on the conditions of repetitive task load.
D. Roman-Liu (2004)
10.1080/10803548.2016.1150094
Development of statistical models for predicting muscle and mental activities during repetitive precision tasks
Hilma Raimona Zadry (2016)
10.1080/0014013031000107595
The effects of posture on forearm muscle loading during gripping
J. P. Mogk (2003)
10.1007/s00421-012-2375-z
Variation of force amplitude and its effects on local fatigue
M. Yung (2012)
10.1097/SLA.0b013e31825efe87
Do Micropauses Prevent Surgeon's Fatigue and Loss of Accuracy Associated With Prolonged Surgery? An Experimental Prospective Study
D. Dorion (2013)
10.1177/0018720818769261
Muscular and Vascular Issues Induced by Prolonged Standing With Different Work–Rest Cycles With Active or Passive Breaks
M. Garcia (2018)
EMG frequency during isometric, submaximal activity: a statistical model for biceps brachii.
S. Solnik (2010)
10.1016/j.jelekin.2016.03.001
Cycle time influences the development of muscle fatigue at low to moderate levels of intermittent muscle contraction.
E. Rashedi (2016)
A matter of time:the influence of context-based timing on compliance with well-being triggers
V. Schendel (2015)
10.1111/j.1600-0838.2011.01432.x
A psychophysiological comparison of on-sight lead and top rope ascents in advanced rock climbers.
S. Fryer (2013)
10.1002/HFM.20249
A practical case study of the relationship between work risk prevention and Fatigue at work in Spanish merchant ships
José A. Orosa (2011)
10.1016/j.jelekin.2012.08.008
Comparison of an intermittent and continuous forearm muscles fatigue protocol with motorcycle riders and control group.
M. Marina (2013)
10.1002/AJIM.10038
Psychophysiology of work: stress, gender, endocrine response, and work-related upper extremity disorders.
U. Lundberg (2002)
Localized Muscle Fatigue: Theoretical and Practical Aspects in Occupational Environments
E. Rashedi (2016)
Longissimus muscle fatigue and injury response due to electrical stimulation with varied work/rest ratios
Peter T. Wawrow (2011)
10.1016/J.JELEKIN.2004.10.004
Voluntary low-force contraction elicits prolonged low-frequency fatigue and changes in surface electromyography and mechanomyography.
A. K. Blangsted (2005)
Localized muscle fatigue during isotonic and nonisotonic isometric efforts
H. Iridiastadi (2003)
10.1016/J.ERGON.2005.06.007
An evaluation of cumulative probability distribution of force (CPDF) as an exposure assessment method during isometric non-isotonic shoulder abductions
H. Iridiastadi (2006)
The research on RSI and Breaks Wellnomics ® White Paper
Wellnomics White (2013)
11Movements, and Other Factors
D. Colombini (2004)
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