The document discusses the effects of vibration on human health, specifically focusing on hand-arm vibration syndrome (HAVS) and its symptoms such as pain, tingling, and whitening of fingers. It highlights vibration exposure risks associated with handheld tools and whole-body vibrations, which can lead to various disorders over time. The document also emphasizes the importance of addressing initial pain to prevent further injury.

1. Ergonomics
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E-content developed by: Dr. Roma Patki
Dr. BMN College of Home Science || Dept. of Resource Mgt 26.03.2020
Special Outreach sessions in view of closure of
college on account of COVID-19 Advisory

2. VIBRATION
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 In its simplest form, vibration can be considered to
be the oscillation or repetitive motion of an object
around an equilibrium position. This type
of vibration is called "whole body motion", meaning
that all parts of the body are moving together in the
same direction at any point in time.

3. EFFECTS OF VIBRATION ON
HAND ARM
 Vibration induced health conditions progress slowly.
In the beginning, it starts as a pain. As the vibration
exposure continues, the pain may develop into an
injury or disease. Pain is the first health condition
that is noticed and should be addressed in order to
stop the injury.
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4. EFFECTS OF VIBRATION ON
HAND ARM
 Vibration induced white – finger (VWF) is the most
common condition among the operators hand held
vibrating tools. Vibration can cause changes in
muscles, tendons, bones and joints and can affect
the nervous system. Collectively these effects are
known as Hand Arm Vibration Syndrome (HAVS).
The symptoms of VWF are aggravated when the
hands are exposed to cold.
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5. EFFECTS OF VIBRATION ON
HAND ARM
 Workers affected by HAVS commonly complain
report:
 Attacks of whitening (blanching) of one or more fingers when
exposed to cold
 Tingling and loss of sensation in fingers
 Loss of light touch
 Pain and cold sensations between periodic white finger attacks
 Loss of grip strength
 Bone cysts in fingers and wrists.
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6. WHITENING OF FINGERS
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7. HEALTH EFFECTS OF
VIBRATION ON WHOLE BODY
 Whole body vibrations can cause fatigue, insomnia,
stomach problems, headache and “shakiness”
shortly after or during exposure.
 After daily exposure over a number of years, whole
body vibration can affect the entire body and result in
a number of health disorders.
 Over exposure to whole body vibration could have
contributed to a number of circulatory, bowel,
respiratory, muscular and back disorders.
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8. HEALTH EFFECTS OF
VIBRATION ON WHOLE BODY
 Studies show that whole body vibration can increase
heart rate, oxygen uptake and respiratory rate and
can produce changes in blood and urine.
 Studies have also reported decreased performance
in workers exposed to whole body vibration.
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9. Youtube links
 https://www.imca-int.com › publications ›
hand-arm-vibration
 https://www.youtube.com › watch
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