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Published (Version of record)CC BY-NC V4.0, Open
Journal article
Cardiovascular and Psychophysical Response to Repetitive Lifting Tasks in Women
Journal of lifestyle medicine, Vol.9(2), pp.125-131
31/07/2019
PMCID: PMC6894441
PMID: 31828031
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Abstract
Background
Understanding the cardiovascular and psychophysical demands of repetitive lifting tasks is important in job design strategies. This study determined the cardiovascular (oxygen consumption (VO2) and heart rate (HR) and psychophysical response to repetitive lifting tasks in women.
Methods
Ten female (age 27 ± 5 yrs) participants transferred 11.4, 15.9, and 20.5 kg weights back and forth from a rung 40.6 cm high to a rung 156.2 cm high. Rungs were 195.6 cm apart horizontally. Three, 10 minute bouts (1 = 11.4 kg; 2 = 15.9 kg; 3 = 20.5 kg) were performed at 6 lifts per minute. Cardiovascular and psychophysical (rating of perceived exertion, RPE) parameters were monitored throughout the bouts. VO2max and HRmax were determined via a maximal treadmill test.
Results
VO2, HR, and RPE were significantly different between each work bout (p < 0.01), with each outcome variable increasing as load increased. VO2max and HRmax equaled 46.5 ± 7.5 mL·kg−1·min−1 and 191 ± 11 bpm, respectively. Work at 11.4 kg was performed at 38% VO2max and 63% HRmax; at 15.9 kg at 41% VO2max and 72% HRmax; and at 20.5 kg at 49% VO2max and 81% HRmax. RPE at 11.4, 15.9, and 20.5 kgs were: 8.4 ± 1.6, 11.4 ± 1.9, and 15.0 ± 2.2.
Conclusion
During these repetitive lifting tasks, metabolic cost and perceived exertion increased with weight lifted; average work intensity ranged from 63 to 81% of HRmax and 38 to 49% of VO2max. Results have important implications in relation to job pacing and design, and worksite health promotion strategies aimed at reducing work place injury.
Details
- Title
- Cardiovascular and Psychophysical Response to Repetitive Lifting Tasks in Women
- Creators
- Trish Gail Sevene - California State University, Monterey BayMark DeBeliso - Southern Utah UniversityChad Harris - Metropolitan State University of DenverJoseph Berning - New Mexico State UniversityMike Climstein - Southern Cross UniversityKent Jason Adams - California State University, Monterey Bay
- Publication Details
- Journal of lifestyle medicine, Vol.9(2), pp.125-131
- Publisher
- Sage
- Identifiers
- 991013067591202368
- Copyright
- © 2019 Yonsei University Wonju College of Medicine. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/ licenses/by-nc/4.0) which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
- Academic Unit
- Faculty of Health; Human Sciences
- Language
- English
- Resource Type
- Journal article