Evidence map›Paper›PMID 38165446›Full record

ArticleEuropean journal of applied physiology2024

The effects of sustained, low- and high-intensity isometric tasks on performance fatigability and the perceived responses that contributed to task termination.

Robert W Smith, Dolores G Ortega, Jocelyn E Arnett, Tyler J Neltner, Richard J Schmidt, Glen O Johnson, Joseph P Weir, Terry J Housh

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Article in European journal of applied physiology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
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2citing papers in PubMed
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1 · What the graph read from it

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

8 authors.

Robert W SmithDepartment of Nutrition and Health Sciences, University of NE - Lincoln, Lincoln, NE, 68510, USA. bsmith80@huskers.unl.edu.ORCID http://orcid.org/0000-0002-9376-6886
Dolores G OrtegaDepartment of Nutrition and Health Sciences, University of NE - Lincoln, Lincoln, NE, 68510, USA.
Jocelyn E ArnettDepartment of Nutrition and Health Sciences, University of NE - Lincoln, Lincoln, NE, 68510, USA.
Tyler J NeltnerDepartment of Health and Human Performance, University of Wisconsin-Platteville, Platteville, WI, 53818, USA.
Richard J SchmidtDepartment of Nutrition and Health Sciences, University of NE - Lincoln, Lincoln, NE, 68510, USA.
Glen O JohnsonDepartment of Nutrition and Health Sciences, University of NE - Lincoln, Lincoln, NE, 68510, USA.
Joseph P WeirDepartment of Health, Sport and Exercise Sciences, University of Kansas, Lawrence, KS, 66045, USA.
Terry J HoushDepartment of Nutrition and Health Sciences, University of NE - Lincoln, Lincoln, NE, 68510, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe present study examined the effects of sustained, isometric low- versus high-intensity tasks on time to task failure (TTF), performance fatigability (PF), ratings of perceived exertion (RPE), and the perceived causes of task termination from a post-test questionnaire (PTQ).

methodsTen men (mean ± SD: age = 21.1 ± 2.3 years; height = 180.2 ± 5.7 cm; body mass = 79.5 ± 8.8 kg) performed maximal voluntary isometric contractions (MVICs) before and after fatiguing, isometric forearm flexion tasks anchored to the torque corresponding to RPE values of 2 (TRQ2FT = 23.8 ± 7.1 N·m) and 8 (TRQ8FT = 60.9 ± 11.4 N·m). In addition, the subjects completed a PTQ which surveyed whether the perceived sensations of fatigue or pain, and/or the psychological factors of loss of focus and motivation contributed to the decision to terminate the task. Repeated measures ANOVAs, Wilcoxon-Signed Rank tests, and Spearman's Rank-Order Correlations were used to analyze the data.

resultsAcross the fatiguing tasks, there were similar decreases in MVIC torque (95.2 ± 20.3 vs. 68.9 ± 15.6 N·m; p < 0.001) and RPE values (p = 0.122) at task failure for TRQ2FT (7.4 ± 2.7) and TRQ8FT (8.9 ± 1.0), but a longer (p = 0.005) TTF for the TRQ2FT (245.0 ± 177.0 s) than TRQ8FT (36.8 ± 11.1 s).

conclusionsDespite reaching task failure, the subjects were able to perform MVICs that were 100-300% greater than the target torque values within seconds of terminating the tasks. Thus, we hypothesized that task failure was not caused by an inability to produce sufficient torque to sustain the tasks, but rather an unwillingness to continue the task.

Indexed as

Isometric ContractionMuscle FatiguePhysical ExertionAdultHumansMaleMuscle, SkeletalPerceptionTorqueYoung AdultEffortExertionMotivationPerceived fatigabilityPerformance fatigability

Identifiers

PMID38165446

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.