| Title |
Influence of mental workload on muscle endurance, fatigue, and recovery during intermittent static work
|
|---|---|
| Published in |
European Journal of Applied Physiology, December 2011
|
| DOI | 10.1007/s00421-011-2264-x |
| Pubmed ID | |
| Authors |
Ranjana K. Mehta, Michael J. Agnew |
| Abstract |
Most occupational tasks involve some level of mental/cognitive processing in addition to physical work; however, the etiology of work-related musculoskeletal disorders (WMSDs) due to these demands remains unclear. The aim of this study was to quantify the interactive effects of physical and mental workload on muscle endurance, fatigue, and recovery during intermittent work. Twelve participants, balanced by gender, performed intermittent static shoulder abductions to exhaustion at 15, 35, and 55% of individual maximal voluntary contraction (MVC), in the absence (control) and presence (concurrent) of a mental arithmetic task. Changes in muscular capacity were determined using endurance time, strength decline, electromyographic (EMG) fatigue indicators, muscle oxygenation, and heart rate measures. Muscular recovery was quantified through changes in strength and physiological responses. Mental workload was associated with shorter endurance times, specifically at 35% MVC, and greater strength decline. EMG and oxygenation measures showed similar changes during fatigue manifestation during concurrent conditions compared to the control, despite shorter endurance times. Moreover, decreased heart rate variability during concurrent demand conditions indicated increased mental stress. Although strength recovery was not influenced by mental workload, a slower heart rate recovery was observed after concurrent demand conditions. The findings from this study provide fundamental evidence that physical capacity (fatigability and recovery) is adversely affected by mental workload. Thus, it is critical to determine or evaluate occupational demands based on modified muscular capacity (due to mental workload) to reduce risk of WMSD development. |
X Demographics
The data shown below were collected from the profiles of 9 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 3 | 33% |
| Malaysia | 1 | 11% |
| United Kingdom | 1 | 11% |
| Netherlands | 1 | 11% |
| Unknown | 3 | 33% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 6 | 67% |
| Practitioners (doctors, other healthcare professionals) | 2 | 22% |
| Science communicators (journalists, bloggers, editors) | 1 | 11% |
Mendeley readers
The data shown below were compiled from readership statistics for 295 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United Kingdom | 3 | 1% |
| Spain | 2 | <1% |
| France | 1 | <1% |
| Malaysia | 1 | <1% |
| United States | 1 | <1% |
| Unknown | 287 | 97% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Master | 57 | 19% |
| Student > Ph. D. Student | 52 | 18% |
| Student > Bachelor | 30 | 10% |
| Researcher | 24 | 8% |
| Professor | 19 | 6% |
| Other | 52 | 18% |
| Unknown | 61 | 21% |
| Readers by discipline | Count | As % |
|---|---|---|
| Sports and Recreations | 53 | 18% |
| Engineering | 47 | 16% |
| Medicine and Dentistry | 28 | 9% |
| Psychology | 24 | 8% |
| Nursing and Health Professions | 13 | 4% |
| Other | 64 | 22% |
| Unknown | 66 | 22% |
Attention Score in Context
This research output has an Altmetric Attention Score of 15. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 05 January 2021.
All research outputs
#2,376,151
of 25,374,917 outputs
Outputs from European Journal of Applied Physiology
#782
of 4,345 outputs
Outputs of similar age
#16,708
of 247,132 outputs
Outputs of similar age from European Journal of Applied Physiology
#11
of 55 outputs
Altmetric has tracked 25,374,917 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 90th percentile: it's in the top 10% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 4,345 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 14.6. This one has done well, scoring higher than 82% of its peers.
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We're also able to compare this research output to 55 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 80% of its contemporaries.