Analysis of hand grip strength in different physical and mental conditions as a public health strategy
DOI:
https://doi.org/10.17533/udea.rfnsp.e356229Keywords:
task analysis and performance, physical effort, hand strength, nasa task load indexAbstract
Objective: To evaluate hand grip strength as an indicator of physical and mental workload in different conditions, in order to develop strategies for public health promotion.
Methodology: Using a hand grip strength dynamometer, the maximum strength of the participants (30 persons) was recorded. During the evaluation of this strength, the physical demand task was executed, exercising strength at low, medium and high levels. Likewise, mental demand tasks were performed by solving arithmetic operations at low, medium and high levels. Two conditions of the experiment were defined: 1) task performed when evaluating the physical workload and the mental task combined (first the physical demand is performed and then the mental one), and 2) tasks performed and evaluated simultaneously (both physical and mental demands at the same time). Mental workload tools (nasa task load index) were used to assess workload.
Results: Time to task completion was significantly longer for combined than simultaneous tasks and performance was significantly higher for combined than simultaneous tasks. In addition, it is observed that there are considerable health effects in the simultaneous form.
Conclusions: The combined form performed better than the simultaneous form and the Traditional nasa task load index presented a significantly higher overall workload index level than the nasa raw task load index
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