Measurement of Height Loss During Whole Body Vibrations

Magnusson, Marianne; Almqvist, Martin; Broman, H.; Pope, Malcolm H.; Hansson, Tommy

doi:10.1097/00002517-199206000-00009

Cited by 30 publications

(11 citation statements)

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“…Seated whole body vibration in a position that ensured muscular activity of the erector spinae muscles caused faster and more pronounced muscular fatigue in the lumbar erector spinae muscles when compared to the absence of vibration (66). Both static sitting and seated whole body vibration caused increased height loss in subjects, suggesting increased spinal load (67).…”

Section: Whole Body Vibration (Wbv)mentioning

confidence: 98%

Spine Ergonomics

Pope

Goh

Magnusson

2002

Annu. Rev. Biomed. Eng.

244

154

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Occupational low back pain (LBP) is an immense burden for both industry and medicine. Ergonomic and personal risk factors result in LBP, but psychosocial factors can influence LBP disability. Epidemiologic studies clearly indicate the role of mechanical loads on the etiology of occupational LBP. Occupational exposures such as lifting, particularly in awkward postures; heavy lifting; or repetitive lifting are related to LBP. Fixed postures and prolonged seating are also risk factors. LBP is found in both sedentary occupations and in drivers as well as those involved in manual materials handling. Any prolonged posture will lead to static loading of the soft tissues and cause discomfort. Standing and sitting have specific advantages and disadvantages for mobility, exertion of force, energy consumption, circulatory demands, coordination, and motion control. The seated posture leads to inactivity causing an accumulation of metabolites, accelerating disk degeneration and leading to disk herniation. Driver's postures can also lead to musculoskeletal problems. Workers in a driving environment are often subjected to postural stress leading to back, neck, and upper extremity pain. This exacerbates the problems due to the vibration. Prevention is by far the treatment of choice. Improved muscle function can be preventative. Poor coordination and motor control systems are as important as endurance and strength. Fixed postures should be avoided. Seats offering good lumbar support should be used in the office. A suspension seat should be used in vehicles whenever possible. Heavy and awkward lifting should be avoided and lifting aids should be made available. Workers should report LBP as early as possible and seek medical advice if they think occupational exposure is harming them. The combined effects of the medical community, labor, and management are required to cause some impact on this problem.

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Section: Whole Body Vibration (Wbv)mentioning

confidence: 98%

Spine Ergonomics

Pope

Goh

Magnusson

2002

Annu. Rev. Biomed. Eng.

244

154

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“…The spinal overloading from while patrolling by car may have suffered the in uence of the backrest inclination. Magnusson and colleagues [29] reported that seats with a backrest tilted at 120 o cause less stature loss in comparison to seats without a backrest. On the other hand, sitting without a backrest causes a pelvic retroversion, which changes the physiological curve of the spine and modi es the compressive load distribution [33].…”

Section: Discussionmentioning

confidence: 99%

“…It has been demonstrated that some movements of the body may help to recover stature [28]. The chair type [28] and the use of backrests [29], the lack of instructions regarding sit-stand ratio [24] and the uncontrolled movements performed during the workday (e.g., intermittent hyperextensions; [30]) may have also played a role.…”

Section: Discussionmentioning

confidence: 99%

A Cross-Sectional Analysis of the Muscle Strength, Spinal Shrinkage and Recovery During a Working Day of Military Police Officers

Holfinger

Rodacki

Tavares

et al. 2021

Preprint

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Background: Military personnel has a large prevalence of back, especially those involved in patrolling routines as they are required to wear heavy protective equipment. Patrolling includes long periods sustaining the protective equipment is sustained in a sitting either on or in a motor vehicle (motorcycle or car). Thus, understanding spinal loading of Military Police Officers (MPO) after patrolling by car (CAR; n=14), motorcycle (MOT; n=14), and administrative (ADM; n=14) routines is relevant to establish preventive strategies. Design: The torque of the trunk and working and anthropometric characteristics were assessed to explain and spinal loading using stature variation measures. Precise stature measures were performed before and after a 6h journey (LOSS) and 20min after a resting posture (RECOV). The isometric peak torque of the trunk extensor (PTE.BM-1) and flexor (PTF.BM-1) muscles were measured before the working journey. Results: The LOSS was similar between CAR and MOT (4.8 and 5.8mm, respectively) after 6h of patrolling. The ADM presented the lowest LOSS (2.8mm; p<0.05). No changes in RECOV between groups were observed (p>0.05). Vibration may explain the greater spinal loading involved in CAR and MOT in comparison to the ADM. A GLM analysis revealed that only BMI was the only explanatory factor for stature loss. No independent variables explained RECOV. The ability of the trunk muscles to produce force did not influence LOSS or RECOV between groups. Conclusions: MPOs involved in CAR or MOT patrolling may require greater post-work periods and strategies designed to reduce the weight of the protective apparatus to dissipate spinal loading. The external load used in patrolling is a relevant spinal loading factor.

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“…This results from vehicular vibrations that are theorized to lead to back muscle fatigue [13]. The risks of muscle fatigue from MMH may increase among longdistance truck drivers that have also been exposed to vehicle vibrations while driving [14][15][16]. Future research focused on the effect of fatigue on truck driver fall potential, particularly including objective measures of vibration and back pain is needed [17].…”

Section: Future Workmentioning

confidence: 99%

Fall Risk Factors for Commercial Truck Drivers

RM¹

2014

J Ergonomics

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Background: Fall related injuries are common in the commercial trucking industry. Falls from three specific locations constitute 83% of reported falls: the back of truck/trailer, cargo handling and truck cab. Nearly one quarter of all injuries in truck drivers resulting in days away from work occur from mounting and dismounting a vehicle. Purpose: This study aims to identify risk factors associated with falls and near falls among a population of commercial truck drivers. Methods: Data from a large cross sectional study of 797 commercial truck drivers were analyzed. Questions about health and behavior were correlated with self-reported data regarding falls from mounting and dismounting activities. Self-reported factors believed to have contributed to a fall are also analyzed. Results: Falls were reported by many truck drivers in this large, cross sectional study. Two thirds of drivers experiencing falls in the 12-month period prior to enrollment indicated that an environmental factor, e.g., ice, snow, mud influenced their fall and the majority of the falls occurred around the cab. The average BMI in this study population was 33.2 kg/m 2 (SD=5.5), thus most drivers were obese. Self-reported health status and BMI were associated with higher odds of lifetime reported falls during both mounting and dismounting the cab. Other factors that were associated with falls included feeling mentally and physically exhausted. Conclusions: This study's findings suggest that truck, environmental conditions and personal factors are all significantly associated with reported falls during mounting and dismounting.

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Measurement of Height Loss During Whole Body Vibrations

Cited by 30 publications

References 0 publications

Spine Ergonomics

Spine Ergonomics

A Cross-Sectional Analysis of the Muscle Strength, Spinal Shrinkage and Recovery During a Working Day of Military Police Officers

Fall Risk Factors for Commercial Truck Drivers

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