| dc.description.abstract | Commonly, the motorcycle riders are in an astride position during the trip. They placed
the legs on a pedal by the same token of passengers. It will produce the inner-thigh
pressure which leads to the transient paresthesia in the form of an insufficient blood
supply. This position is caused by hanged legs where the leg cannot reach to the pedal.
Oftentimes the syndrome is experienced by children of 3-4 years old. The objective of
this study is to investigate the health impact on the upper legs based on muscle
contraction. The empirical study is conducted to record the signal of muscle contraction
by attaching some sensors on Semimembranosus muscle area. 12 children have
participated in this study. Their age is 3-4 years old. The experiment was conducted for
one hour with two conditions of motorcycle that is off-engine and on-engine. The offengine
condition is motorcycle not having vibration and on-engine is a motorcycle
engine producing vibration which transferring it to the body. The children were
instructed to get a ride on a motorcycle and identified the muscle contractions on the
thigh by using electromyography. Blood pressure was also measured to identify a state
of the blood flow. Statistical analysis is done to test the hypothesis by using T Test and
the result is 0,014 and 0,000018 in on and off engine respectively and 0,028 and
0,000012 in female and male respondents respectively. The result of this study found
that the contraction of semimembranousus muscle has difference between male and
female with average RMS value are 0,57 mV and 0,17 mV respectively in on-engine
condition and 0,1 mV and 0,05 mV respectively in off-engine condition. The blood
pressure value of Systolic and diastolic have average value of 88,33/65 mmHg before
experiment, 76,67/63,33 mmHg after experiment for male and 95/73,33 mmHg before
the experiment, 78,33/66,67mmHg after the experiment for female. Those values
showed that the prolonged sitting in on-engine condition is having higher muscle
fatigue than off-engine for both, male and female. | en_US |
