Whole-body vibration alters proprioception in the trunk

Li, Lü; Lamis, Farhana; Wilson, Sara E.

doi:10.1016/j.ergon.2007.10.010

Cited by 28 publications

(14 citation statements)

References 35 publications

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“…In the study by Slota et al (2008), spinal stability decreased following 30 min of WBV exposure on a wobble chair, as evidenced by changes in kinematic and stability assessment measures. This was similar to the findings of Li et al (2008) who, using 3D motion analysis, illustrated that position sense error, which measures the ability to reproduce a target posture (Li et al 2008), was significantly greater in vibration conditions compared to control conditions. It was concluded that WBV reduces the lumbar spines' sensory and neuromotor habituation properties (Carlsoo 1982;Desmedt 1983;Vermeersch et al 1986).…”

Section: Spinal Stability and Balance Responsessupporting

confidence: 89%

Whole-body vibration and occupational physical performance: a review

Savage¹,

Billing

Furnell

et al. 2015

Int Arch Occup Environ Health

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Section: Spinal Stability and Balance Responsessupporting

confidence: 89%

Whole-body vibration and occupational physical performance: a review

Savage¹,

Billing

Furnell

et al. 2015

Int Arch Occup Environ Health

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“…According to Gellerstedt (2002), 4,000 control inputs per hour have to be carried out by the operator, due to the lack of automatic functions of the boom and harvester head. Despite the ergonomic design of the cabs, the operators of mobile machinery are exposed mainly to noise (Hansson 1990;Axelsson 1998;Marsili et al 1998;Nieuwenhuis, Lyons 2002;Messingerová et al 2005;Sümer 2006;Beuk et al 2007;Gerasimov, Sokolov 2009;Aybek et al 2010;Bilski 2013), whole-body vibrations (Boileau, Rakheja 1990;Burdorf, Swuste 1993;Magnusson et al 1993;Hansson 1995;Huston et al 1999;Hinz et al 2002;Paddan, Griffin 2002;Hostens, Ramon 2003;Chen et al 2003;Sherwin et al 2004a,b;Deprez et al 2005;Kolich et al 2005;Tiemessen et al 2007;Li et al 2008;Gerasimov, Sokolov 2009), microclimatic conditions -mostly temperature, and airflow velocity inside the cab (Gao, Niu 2004;Kaynakli, Kilic 2005;Huang et al 2006;Mezrhab, Bouzidi 2006;Cengiz, Babalik 2007;Farzaneh, Tootoonchi 2008;Kim et al 2009;Zhang et al 2009a,b;Alahmer et al 2011), and severe mental and sensory load (Axelsson, Pontén 1990;Poschen 1993;…”

mentioning

confidence: 99%

Objective and subjective assessment of selected factors of the work environment of forest harvesters and forwarders

Martin¹,

Messingerová²,

Ferenčík³

et al. 2016

J. For. Sci.

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This article was aimed at assessment of selected factors of the work environment, which influenced the operators of harvesters and forwarders. The selection of the work environment factors was based on a thorough literature survey. From the survey exposure to whole-body vibrations, noise (equivalent and peak), microclimatic conditions and mental load were selected for detailed observations. The measurements were conducted according to international standards and assessed according to European or national legislation. Subjective assessment of the effects of the work environment was conducted through a structured interview. The exposure to whole-body vibrations was 0.5 m·s -2 . The equivalent noise exposure was 78 dB, peak noise exposure was 130 dB. The average temperature inside the machine cabs was 17.9°C and average airflow velocity was 0.06 m·s -2 . Mental load was high according to the Meister questionnaire, three operators considered the load inadequate, two considered it adequate. Subjective assessment showed that operators considered other factors to be light or no load.Keywords: noise exposure; whole-body vibrations; microclimate; mental load Work environment is a set of all conditions in which workers carry out their work. It consists of all workers and factors present at the workplace, or of those who have to do with the work and influence the health or comfort of workers. The worker is exposed to many harmful factors which interact and their joint effect can be synergistic or complementary (Schwartz et al. 2013).Operators of multi-operational machinery carry out their tasks in ergonomically designed cabs capable of partial attenuation of noise and vibrations caused by the machine movement, driving gear, and working parts of the machine. Cabs are also equipped with air conditioning and glare reducing windows. Some factors (e.g. electromagnetic, ionising radiation, various chemical factors, or energy expenditure) do not apply to the jobs of multioperational machinery operators. Their assessment would only consume time with no significant effect on the overall outcome of the assessment. The nature of work in mechanized logging partially shifted from physical to mental after employment of multi-operational machinery. The need for muscular activity decreased and the need to stay concentrated and alert through long periods grew in importance. Harvester operators have to be able to process a lot of information, react quickly, and retain their concentration in monotonous, repetitive operations (Axelsson, Pontén 1990;Poschen 1993;Gellerstedt 1997;Gellestedt et al. 1999;Tsioras 2012). Operating the machines is quite demanding. According to Gellerstedt (2002), 4,000 control inputs per hour have to be carried out by the operator, due to the lack of automatic functions of the boom and harvester head. Despite the ergonomic design of the cabs, the operators of mobile machinery are exposed mainly to noise (Hans-

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“…For example, some pilots who mentioned lower back pain had worked as helicopter pilots, which has been shown to overload the lower back with vibration (20).…”

Section: Discussionmentioning

confidence: 99%

Assessment of the perception of aerobatic pilots regarding flight activity

2015

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Introduction In order for an ergonomic assessment to be comprehensive, it must include the workers’ perception in the process of identifying and eliminating risks, aimed at improving their health, and living and working conditions. Objective To assess the perception of pilots from the Brazilian Air Demonstration Squadron (EDA) regarding their own work. Materials and methods This was a qualitative cross-sectional study of descriptive nature. A semi-structured interview was conducted with all EDA pilots, whose answers were recorded and later transcribed and categorized according to the method of content analysis proposed by Bardin. Results Mean age was 34 ± 4 years and mean time at EDA, 24 ± 21 months. Response categorization demonstrated that heat was the most commonly cited external factor, followed by Gz force. Regarding physical overload, the most common complaint regarded the upper right limb during flight. Considering physical overload during flight, rotating the control stick laterally was the most commonly mentioned maneuver. Communication among group members during work (both administrative and in flight) was perceived by most as open and direct. Conclusion The pilots’ perception allowed a broad assessment of their working conditions, which can help direct specific future assessments (i.e. biomechanical) and interventions that can ensure health gains and maintenance for this population. The current study provided great insight into the working conditions of Brazilian Air Force demonstration pilots, leading to the possibility of providing them with better health care.

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Whole-body vibration alters proprioception in the trunk

Cited by 28 publications

References 35 publications

Whole-body vibration and occupational physical performance: a review

Whole-body vibration and occupational physical performance: a review

Objective and subjective assessment of selected factors of the work environment of forest harvesters and forwarders

Assessment of the perception of aerobatic pilots regarding flight activity

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