Relationships between maximum holding time and ratings of pain and exertion differ for static and dynamic tasks

Laura A Frey Law; Jennifer E Lee; Tara R McMullen; Ting Xia

doi:10.1016/j.apergo.2010.03.007

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Relationships between maximum holding time and ratings of pain and exertion differ for static and dynamic tasks

Journal article

Peer reviewed

Relationships between maximum holding time and ratings of pain and exertion differ for static and dynamic tasks

Laura A Frey Law, Jennifer E Lee, Tara R McMullen and Ting Xia

Applied ergonomics, Vol.42(1), pp.9-15

12/2010

DOI: 10.1016/j.apergo.2010.03.007

PMCID: PMC2929289

PMID: 20462566

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Abstract

Ratings of perceived discomfort (0 to 10 scale) have been used to estimate relative maximum holding times (%MHT), particularly for static tasks. A linear 1:10% ratio has been described, where a rating of 5 corresponds to 50%MHT. It is unknown whether this linear ratio is valid for dynamic tasks. Additionally, whether pain or exertion are the primary predictors of discomfort is not clear. Thus, the goal of this study was to investigate both pain and exertion ratings during static (50% maximum; N=42) and dynamic (75% maximum; N=34) elbow flexion tasks until failure. Gender, self-reported physical activity, and peak torque were also assessed. Pain and exertion ratings reasonably matched the 1:10% ratio during the static task but not during the dynamic task. Exertion related more strongly to MHT than pain in both tasks. Neither gender nor activity level appeared to influence perceptual ratings, but peak torque explained approximately 20% of the variance in MHT.

Pain - classification

Physical Exertion - physiology

Humans

Male

Young Adult

Exercise Test

Pain - physiopathology

Adult

Female

Surveys and Questionnaires

Muscle Fatigue - physiology

Task Performance and Analysis

Isometric Contraction - physiology

Details

Title: Subtitle: Relationships between maximum holding time and ratings of pain and exertion differ for static and dynamic tasks
Creators: Laura A Frey Law - Graduate Program in Physical Therapy and Rehabilitation Science, Carver College of Medicine, The University of Iowa, 1-252 Medical Education Building, Iowa City, IA 52242, USA. laura-freylaw@uiowa.edu
Jennifer E Lee
Tara R McMullen
Ting Xia
Resource Type: Journal article
Publication Details: Applied ergonomics, Vol.42(1), pp.9-15
DOI: 10.1016/j.apergo.2010.03.007
PMID: 20462566
PMCID: PMC2929289
NLM abbreviation: Appl Ergon
ISSN: 0003-6870
eISSN: 1872-9126
Publisher: England
Grant note: K12 HD055931 / NICHD NIH HHS K01 AR056134 / NIAMS NIH HHS K12HD055931 / NICHD NIH HHS K12 HD055931-01 / NICHD NIH HHS
Language: English
Date published: 12/2010
Academic Unit: Roy J. Carver Department of Biomedical Engineering; Nursing; Physical Therapy and Rehabilitation Science; Internal Medicine
Record Identifier: 9984047851302771

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