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Cleveland Clinic What you need to know about Seasickness
Medem Medical Library Motion Sickness in Children
Centers for Disease Control and Prevention CDC Travelers Health Motion Sickness
Mayo Clinic Motion sickness: First Aid
Kids Health Kids Health - What is Motion Sickness
American Academy of Otolaryngology AAO-HNS American Academy - Dizziness and Motion Sickness
Medline Plus Topics on Seasickness - Trusted Health Information for You
Gov Publication YOUR TRIP ABROAD Department of State Publication 10542
Internet Health Library

Travel sickness - women more susceptible than men

Deep slow breathing: a cure for travel sickness

More travel, less travel sickness

Coach survey reveals 28.4% of all travelers feel ill


Medline Plus Dizziness and Sea Sickness 
Mayo Clinic

Sea sickness

Travelers Health Sea Sickness
Medem Medical Library Caring for your baby and young child
Kids Health What is Motion Sickness for Kids
LookSmart  FindArticles

Gale Encyclopedia of Medicine

Pediatrics for Parents

Motion sickness test

When motion sickness goes along for the ride


Natural Options for Motion Sickness

Simple Measures May Prevent Motion Sickness

Acupressure Can Relieve Morning Sickness

RX Insider Motion Sickness
Univ. of Maryland Medicine Motion Sickness
KCTV 5 News KCTV 5 News Encyclopedia on Motion Sickness
MIT Tech Talk Summer traveler or astronaut, motion sickness is real issue


Internet Health Library Articles: Travel sickness - women more susceptible than men

Research into the effects of motion sickness has revealed that women are more susceptible to motion sickness than males.

Researchers at the Department of Psychology, The Pennsylvania State University, USA monitored the physiological effects of travel sickness by recording the stomach activity during an applied degrees of motion were stimulated.

Thirty four men and twenty six women participated in the study. Each participant was placed inside an optokinetic drum which simulates the unsteady movements associated with causing the symptoms of motion sickness. Each test lasted for a 16 minutes and electrogastrograms (EGGs) were used to record the effects on the stomach.

A comparison of the men and women revealed that the women all had significantly higher symptom scores than men, although the researchers were surprised to discover that comparisons of the electrogastrogram readings of stomach activity revealed no significant or detectable difference in the stomach patterns of the women over the men.

This researchers concluded that, although women seem to be more susceptible than men to suffer from motion sickness and particularly so in relation to gastrointestinal symptoms, these symptoms are not caused by abnormalities in the stomach itself. This means that travel sickness in women is not caused by an upset stomach or problems with the stomach, but must derive from some other cause.

Source: Aviat Space Environ Med 1999 Oct;70(10):962-5
Effects of gender of subjects and experimenter on susceptibility to motion sickness.
Jokerst MD, Gatto M, Fazio R, Gianaros PJ, Stern RM, Koch KL

The Internet Health Library 2000 

Internet Health Library Articles: Deep slow breathing: a cure for travel sickness

It is no coincidence that opening the window of a car when someone is feeling travel sick generally seems to alleviate their condition. Researchers at the Department of Psychology, The Pennsylvania State University, in the USA investigated the causes and effects of motion sickness and found that slow, deep breathing does indeed help reduce travel sickness.

is known to increase the activity of the parasympathetic nervous system and very often people suffering from car sickness feel better when the window is opened and they are able to breathe fresh air. it was considered this may prevent abnormal rhythm in the stomach and hence prevent symptoms of motion sickness.

Forty six healthy men and women were each, in turn, put in a rotating optokinetic drum and all were found to be susceptible to motion sickness. They were then asked to count a slow deep breathing exercise during a sixteen minute period before going back in the drum. This time, however, the symptoms of motion sickness was significantly reduced.

The researchers concluded that, in those situations known to provoke stomach and motion sickness such as air, car and boat travel, slow, deep breathing exercises significantly decrease the onset of the stomach and motion symptoms, especially if the exercises are carried out before the situation likely to promote the motion sickness.

Source : Aviat Space Environ Med 1999 Dec;70(12):1189-92
Slow deep breathing prevents the development of tachygastria and symptoms of motion sickness.
Jokerst MD, Gatto M, Fazio R, Stern RM, Koch KL

The Internet Health Library 2000

Internet Health Library Articles: More travel, less travel sickness

Many people who suffer from travel sickness opt for dramamine and other over-the -counter medicines to help alleviate the feelings of nausea and vomiting. However, according to a report from the Department of Psychology, Humboldt State University, California, USA, there is a simpler, safer remedy - travel more often! It seems that the more we travel, the less likely we are to suffer from travel sickness.

Simulating the motion associated with travel sickness, researchers demonstrated that travel sickness can be significantly reduced simply by travelling more often. Using an optokinetic drum to replicate the symptoms of motion sickness, the researchers monitored thirty four men and women who suffered from travel sickness.

The aim of the study was to find out if the symptoms created at the original exposure to motion sickness are altered or adapted in any way at one month and one year following re-exposure to the drum. At each period, the patients were repeatedly exposed to the motion of the drum until there were no detectable symptoms of travel sickness.

The results of the study revealed that, after the initial exposure, the average degree of travel sickness was rated at 9.23. However, a month later, when the patients were re-tested, the average had dropped to 0.94 - a reduction of approximately 90 per cent. And, when the patients were tested a year later, the patients' symptoms had risen to just 6.88 - which was still 25 per cent better than their original test.

The report suggests that people do tend to adapt to motion sickness to the extent that within just one month, symptoms are virtually gone and that the effects last to a limited degree for a year. The researchers recommend that there is a significant adaptation to motion sickness which is almost completely retained at one month and partially retained one year later, suggesting that the repeated sensation creates some sort of immunity to further stimulation.

Source: Aviat Space Environ Med 1999 Aug;70(8):766-8
The retention of adaptation to motion sickness eliciting stimulation.
Hu S, Stern RM

The Internet Health Library 2000

Internet Health Library Articles:  Coach survey reveals 28.4% of all travellers feel ill

Over 28 per cent of all bus and coach passengers experience travel sickness, according to a national study carried out on 56 mainland UK bus and coach journeys.

Researchers at the Institute of Sound and Vibration Research, University of Southampton, UK conducted a survey measuring the effects of vehicle motion on over 3256 passengers.

The results found that 28.4% of all passengers reported feelings of illness, 12.8% reported nausea and 1.7% reported vomiting during coach travel. Passenger nausea and illness ratings increased from lateral viewing during the journey and from extra motion.

The occurrence of nausea was greater on routes classified as being predominantly cross-country where lateral vehicle motion was significantly higher. The survey also found the travellers sitting towards the back of the bus or coach experienced worse feelings of sickness than those sitting near the front.

The results of the study suggest that travel sickness could be reduced by improved forward external vision, especially to those individuals new to coach travel or who travel less often.

Source: Ergonomics 1999 Dec;42(12):1646-64
Motion sickness in public road transport: the effect of driver, route and vehicle.
Motion sickness in public road transport: the relative importance of motion, vision and individual differences.
Turner M, Griffin MJ
Br J Psychol 1999 Nov;90 ( Pt 4):519-30

The Internet Health Library 2000