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Assessing physical workload is the most important step in deciding whether a workload is high and adopting appropriate control strategies to reduce physical workload. This study aimed to compare physical workload and Physical Work...
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Assessing physical workload is the most important step in deciding whether a workload is high and adopting appropriate control strategies to reduce physical workload. This study aimed to compare physical workload and Physical Work Capacity (PWC) among municipality cleaners in Shiraz to determine the number of workers needed to counterbalance physical workload. The present cross-sectional study was performed on 97 municipality cleaners in Shiraz. In the first step, the participants' maximum aerobic capacity (VO2-max) was estimated in the laboratory using an ergometer bicycle and the Young Men’s Christian Association (YMCA) protocol, based on which the PWC was estimated. Secondly, energy expenditure and heart rate during work were measured using a POLAR400 device in an eight-hour shift. At the end of the work shift, the workers’ perceived physical exertion was assessed using a Rating of Perceived Exertion 6–20 (RPE 6–20) Borg scale. In the final stage, the physical workload was assessed based on the results of the two steps. The mean VO2-max of the cleaners and PWC were estimated to be 2.6?±?0.66?l?min?1 and 4.3?±?1.088?kcal?min?1, respectively. The average energy consumed during work was 4.122?±?1.016?kcal?min?1. The overall results of this study showed that physical workload was greater than PWC in 46% of the municipality cleaners. In addition, it was found that 12.45% workforce was required to be added to the street cleaners of Shiraz municipality to reduce the physiological workload on the employed workforce. With respect to the high level of physical activity in a significant proportion of the cleaners, measures such as increasing the workforce are suggested.
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Purpose To examine whether the performance-based work-related functional capacity evaluation (German title: Einschatzung korperlicher Leistungsfahigkeiten bei arbeitsbezogenen Aktivitaten-ELA) can predict return to work (RTW) in p...
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Purpose To examine whether the performance-based work-related functional capacity evaluation (German title: Einschatzung korperlicher Leistungsfahigkeiten bei arbeitsbezogenen Aktivitaten-ELA) can predict return to work (RTW) in patients with musculoskeletal disorders (MSD). Methods A multicenter cohort study was conducted on 162 employed or self-employed patients with various injury-related and chronic MSD, recruited from four outpatient rehabilitation clinics. Patient-reported data on health and work ability were collected at discharge. The FCE test was performed subsequently. The overall FCE-based estimation of the ability to cope with the physical demands of work (positive vs. negative) was used to predict RTW. Successful RTW was defined as a combination of (self-)employment at the 3-month follow-up and a low level of sick leave (< 1.5 weeks) due to MSD. Odds ratios (OR) and 95% confidence intervals (CIs) were calculated using logistic regression models to evaluate the predictive validity of the adjusted FCE results. Results Based on the FCE test, 82% of the patients were estimated as being able to cope with the physical demands of work. 77% of the patients with a positive FCE outcome returned to work (positive predictive value) and 83% with a negative FCE outcome did not (negative predictive value). Patients whose functional capacity was estimated to match the job demands were associated with sixfold higher odds of returning to work after adjusting for patient-reported data on health and work ability. The agreement between the FCE result and RTW differed only on a low to moderate level between the therapists who administered the FCE (72-89%). Conclusion The FCE test at discharge predicts RTW among patients with musculoskeletal disorders.
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BACKGROUND: Metabolic syndrome is a cluster of metabolic abnormalities that can affect a pilot's health. The aim of the study was to establish the prevalence of metabolic syndrome in the German Air Force.
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The distribution of maximal physical work capacity (MPWC) can be used to establish an upper limit for energy expenditure during work (EEwork). If physically demanding work has wearing effects, there will be a negative relationship...
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The distribution of maximal physical work capacity (MPWC) can be used to establish an upper limit for energy expenditure during work (EEwork). If physically demanding work has wearing effects, there will be a negative relationship between MPWC and workload. This study was conducted to investigate the distribution of MPWC among Korean metal workers and to examine the relationship between workload and MPWC. MPWC was estimated with a bicycle ergometer using a submaximal test. Energy expenditure was estimated by measuring heart rates during work. The study subjects were 507 male employees from several metal industries in Korea. They had a lower absolute VO_(2max) than the Caucasian populations described in previous studies. The older workers had a lower physical capacity and a greater overload at work. A negative relationship was found between MPWC and workload across all age groups. Upper limits for EEwork for all age groups and for older age groups are recommended based on the 5th percentile value of MPWC.
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This research's main objective was to determine aerobic capacity in Mexican American young adults. Aerobic capacity was measured using a submaximal treadmill exercise using the Bruce protocol. Sixteen male and five female healthy ...
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This research's main objective was to determine aerobic capacity in Mexican American young adults. Aerobic capacity was measured using a submaximal treadmill exercise using the Bruce protocol. Sixteen male and five female healthy student volunteers aged 22-30 participated in the experiment. Volumetric oxygen consumption was measured using the breath-by-breath VMaxST oxygen consumption monitor. Results indicate that Mexican American men had a VO{sub}(2max) of 4.81/min (SD = 1.75) and a weight adjusted VO{sub}(2max) of 56.32 ml/kg/min (SD = 12.2), while Mexican American women had a VO{sub}(2max) of 2.81/min (SD = 0.73), and a weight-adjusted VO{sub}(2max) of 44.69 ml/kg/min (SD = 6.72). Results also indicated that the heart rate was nearly 10 times the rating of perceived exertion at each workload.
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Allocating right work to right worker is an ever present problem in industry. In this paper, physical working capacity (PWC) of different physical workers ranging in age from 17 years to 60 years has been evaluated on the basis of...
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Allocating right work to right worker is an ever present problem in industry. In this paper, physical working capacity (PWC) of different physical workers ranging in age from 17 years to 60 years has been evaluated on the basis of oxygen consumption/min by means of graded exercise on cycle ergometer. Multiple regression relation has been developed keeping PWC as dependent variable and age, height and weight of the subjects as independent variables. A software has also been developed for allocating work to workers on the basis of their physical working capacity.
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Abstract Purpose The aims of this study were (1) to develop a new classification for the scores of the Modified Spinal Function Sort (M-SFS) which is related to the level of physical work demands and (2) to test the predictive val...
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Abstract Purpose The aims of this study were (1) to develop a new classification for the scores of the Modified Spinal Function Sort (M-SFS) which is related to the level of physical work demands and (2) to test the predictive value of the M-SFS classification. Methods The classification was carried out in 194 subjects with musculoskeletal disorders (MSD) attending a work-related medical rehabilitation from four rehabilitation centers. External criterion was a Functional Capacity Evaluation (FCE)-based work capacity estimation according to the classification used in Germany (“REFA”) which differentiates between light, light to medium, medium and heavy work. The optimal cut-offs for the M-SFS were allocated using the Youden index. Logistic regression models were calculated based on 147 subjects who participated in the follow-up survey to evaluate the predictive validity of the M-SFS classification with regard to sustainable return to work (RTW; employment at the 3-month follow-up combined with a low level of sick leave). Results Cut-offs for M-SFS scores were 44 (light work), 54 (light to medium work), 62 (medium work) and 73 (heavy work). A match between the M-SFS category and the level of physical work demands was associated with a more than threefold higher RTW chance compared to subjects with a negative discrepancy. In case the M-SFS category was above the physical demand level the RTW-chance was more than 13-fold higher. Conclusions M-SFS scores can be classified into four levels of physical work demands. If the perceived work capacity matches or exceeds the level of physical work demands patients with MSD have a substantially higher probability to return to work after rehabilitation. More studies are needed to confirm or reject our findings and overcome some of the weaknesses of this study.
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Purpose Multi-site musculoskeletal pain (MP) is common among health care professionals and is considered a threat to work ability and thereby a long and healthy working life. However, literature is scarce regarding these associati...
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Purpose Multi-site musculoskeletal pain (MP) is common among health care professionals and is considered a threat to work ability and thereby a long and healthy working life. However, literature is scarce regarding these associations among physical therapists (PTs). This study aims to quantify the prevalence of local and multi-site MP among PTs, to investigate the associations between pain intensity and number of pain sites, respectively, with the level of work ability. Methods We conducted a survey among 1006 PTs about pain the previous month in different body areas and work ability. Work ability was measured using the Work Ability Index (WAI) including its seven categories. The odds of having lower level of work ability as a function of pain intensity (0-10) and multi-site pain were determined using binary logistic regression controlled for relevant confounders. Results The neck (36.3%) and the low back (32.3%) were the most commonly affected body areas. Furthermore, a dose-response relationship was observed between the number of pain sites and lower work ability (trend test, p 5 in one to two body regions (OR 2.14, 95% CI 1.27-3.60). This association was stronger when participants reported pain in three to four sites (OR 4.02, 95% CI 2.36-6.82) and even stronger when pain was experienced in five or more sites (OR 6.13, 95% CI 3.31-11.38). Conclusions Multi-site MP is strongly associated-in a dose-response fashion-with lower levels of work ability among PTs.
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to determine indicated factors of physical development, physical readiness, functional condition and efficiency of female students in the process of adaptation to learning.Material: it was examined female students at the beginning...
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to determine indicated factors of physical development, physical readiness, functional condition and efficiency of female students in the process of adaptation to learning.Material: it was examined female students at the beginning of the first and second year of training (n = 342, age 18-20 years). The investigation was conducted on 10 indicators of physical development, 9 indicators of physical preparedness and 13 indicators of functional status and performance.Results: It is established that during the first year of study takes place changes in the factors of the physical development of students, such as: increase of body weight, mass-growth index, muscular strength of the right hand. From the factors of physical readiness: increase the time of the visibility on the crossbar and the number of push-ups from the floor; decreases the length of the jump from the place. From the factors of the functional state: the frequency of breathing and the Genci test increase; decrease the coefficient of circulatory efficiency, endurance factor and systolic blood pressure.Conclusions: Indicated factors of female students’ adaptation to learning is to be considered the strength of the hand (factor of physical development), long jump from the place (factor of physical preparedness), the Genci test (factor of the functional state), the coefficient of circulation efficiency and the endurance factor.
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Objectives: To describe the cross-sectional association between musculoskeletal pain at multiple sites and physical work capacity (PWC) and objectively measured physical activity (PA).
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