Object: Action motorsports, including motocross, have been gaining popularity among children and adolescents, raising concerns for increased risk of concussions in participating youth. The authors undertook this study to test the following hypotheses: 1) that there is a high rate of concussion symptoms associated with a number of preventable or adjustable risk factors, and 2) that a high percentage of these symptoms are not be reported to adults and medical personnel.
Methods: The authors identified all motocross riders under the age of 18 at a regional racetrack during the riding season between May and October 2010. The participants completed questionnaires pertaining to demographic characteristics and variables associated with motocross. The questionnaire results were compared with the incidence of self-reported concussion symptoms.
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Results: Two hundred two riders were identified who met the criteria for participation in the study, and 139 of them completed the study questionnaire. Of these 139 riders, 67 (48%) reported at least 1 concussion symptom during the season. The majority of riders (98%) reported "always" wearing a helmet, and 72% received professional help with fitting of their helmets. Proper helmet fitting was associated with a 41% decreased risk of concussion symptoms (RR 0.59, 95% CI 0.44-0.81, p < 0.01). Sixty-six riders (47%) reported having received sponsor support for motocross participation. Sponsor support conferred a relative risk for concussion symptoms of 1.48 (95% CI 1.05-2.08, p = 0.02).
Conclusions: Nearly half of all motocross competitors under the age of 18 reported concussion symptoms. Preventive measures are necessary to limit the negative impact from concussions. The risk of concussive injury can be decreased for pediatric motocross riders if they receive professional help with proper helmet fitting and through implementation of stricter guidelines regarding sponsorship.
It's called a "whip" (or a "scrub" but it's a much simpler variant and more pragmatic trick to reduce time in the air). The rider seems to be facing the same direction during the flight time so it doesn't look to me like he is "transferring" his kinetic energy to the bike or something, also usually a bike weights more than the rider (around 100kg) and the mass is further away from the axis of rotation so this will require a lot of force to change the rotation direction of this mass. Even the riders themself say that they are relaxed and just "go with the flow". So basically all the movement is set before the jump, what happens after the wheels get off the ground cannot be changed. The other thing I noticed - the angle of the bike changes simultaneously with the rotation direction and this means that there is some gyroscopic effect taking place, but I'm not sure if this is the case.
The Tax Court decision in the case of Willam D. Evans had the look of a hobby loss case, which was kind of neat coming on top of a really good horse case. Well, it was about racing - motorcycles not horses - but it was not a hobby loss case. Ever since I showed my utter ignorance of the sport, if you can call it that, of dressage, prematurely calling Mitt Romney's dancing horse Rafalca out of the Olympics, I get nervous when I encounter a tax case about a sport that I am totally unfamiliar with. Such is the case with motocross racing. According to the infallible source
Mr. Evans's company Dave Evans Construction was a motocross racing corporate sponsor. The issue in the case was whether the sponsorship expenses were ordinary and necessary business expenses. The IRS was skeptical about that because the rider being sponsored was Ben Evans, whose shared surname was in no way coincidental, Ben being the son of Mr. Evans. Here are some highlights.
Ben was born in 1990. He first started motocross racing when he was six years old and quickly demonstrated that he had a special talent. While his siblings competed only in local races, at the age of seven Ben competed in a nationally televised race at the Seattle Kingdome. As a teenager he competed on the national amateur circuit and in 2007 won the Amateur Motocross National Championship 458 Pro Sport class at the Loretta Lynn 4 Motocross Ranch (Loretta Lynn) in Nashville, Tennessee
Between 2006 and 2007 DEC put over $150,000 into motocross expenditures - mostly payments for motorcycles, parts, equipment, racing fees, membership fees, fuel and food. There was just over $40,000 in offsetting income - mainly the sale of motorcycle parts.
Boise's construction industry was particularly competitive during the years in issue, but sponsoring Ben helped give DEC an advantage over its competitors. [*9] Throughout Boise, Ben was well known as a motocross racer. Because many of DEC's jobs came through word of mouth, its relationship with the local community played an important role in driving business. DEC's association with Ben thus played an important role in boosting DEC's exposure and goodwill within the community.
In addition to improving DEC's community relations and attracting more clients, Ben's celebrity status also helped DEC attract investors, such as Carl's Cycle Sales, for its projects. DEC's connection to Ben also helped it secure a major source of financing: Len Williams, the president of Home Federal Bank, first met Mr. Evans at a motocross race when he asked for Ben's autograph; his bank is now DEC's largest construction lender. DEC's connection to Ben also helped it to strengthen its relationships with local subcontractors, thus giving it an advantage over its competitors in securing the best local subcontractors for its projects and occasionally getting discounted rates.
Growing popularity in the sport has also brought about refinement of bikes and the development of sub disciplines of motocross including supercross and arenacross (held at indoor arenas), freestyle motocross (focused on jumping and aerial skills), supermoto (races held on and off road), and vintage motocross (bikes that were made before 1975).
Motocross riders must have a high level of cardiovascular fitness as they need to be able to control a heavy motorbike while maintaining high speeds during a race. In addition riders must also have quick reflexes, and be able to deal with inertia and gravitational forces, making balance and strength important requirements for the sport. Weight training is an important part of preparation, incorporating core strength and all other muscle groups for strength on the bike.
Motocross riders often have busy training schedules with multiple sessions throughout the week. Therefore they need be planned with food choices and ensure that the timing of meals and snacks meals coincides with their training schedule to optimise fuelling and recovery between sessions. On heavy training days, extra snacks are needed to fuel higher training loads in contrast to lighter/rest days where less food may be sufficient.
Individual fluid needs will vary between riders depending on their unique sweat rate. Training is a good time to trial and refine hydration habits and monitor changes in fluid losses under different conditions.
Your motocross bike was made for thrilling competition, but racing your dirt bike can be an intimidating adventure, especially if you are new to the sport. To ensure that you have the most fun possible while racing, you need to understand the process of shifting gears and when and what gears you should be in at various points during the race.
The concept of using a clutch when shifting gears is actually a highly debated topic among riders. Some riders believe that you should clutch every time that you shift. Others disagree with that belief.
Some professional riders use this more effectively than others. Ken Roczen is one that is very easy on his clutch and is able to carry momentum without relying on fanning his clutch. Eli Tomac and Justin Barcia are two riders that rely on their clutch often. This is all a personal preference, although relying on your clutch too much can cause issues. Tomac has had issues in the past of burning his clutch up, which makes the performance of the bike drop off significantly, or even malfunction enough to cause a DNF.
>
>
> "Peter Patton" wrote in message
> news:3934351D...@minnesotamotocross.com...
> > Didn't we go through this thread once before?
> > I said it before and I'll say it again (and I'm not ashamed to admit
> > it)........I'm a gay rider. Some of my happiest times are when I am riding
> :)
> >
> > Peter
> >
> >
>You're right. I think we did go through this before. I don't understand
>why the gay rider/riders won't come out. BTW, I'm a gay rider also but I
>meant in terms of sexual orientation.
>
Ironic, since motocross seems to be the most testosterone-fueled motorsport out there (and there
ain't nuthin' wrong with that)... of course, I remember reading David Pingree's column in Racer-X
last year, when he told a reader not to ride like he was "gay"... maybe one of those big, badass gay
athletes like Bill Walton oughtta smack Ping upside the head one (just kidding -- we like Ping at
our house). I think it's pretty funny that a lisp signifies homosexuality to some folks... heck, they oughtta
hear Michael Waltrip and Buddy Baker talk. Makes MC seem downright macho. Er, manly.
Wrench MamaOn Tue, 30 May 2000 21:45:49 GMT, Peter Patton wrote:>
>
>James Lince wrote:
>
>> If our society is going to become "sex blind" (in same way as "color blind")
>
>But it is neither. There is still alot of prejudice out there. And we are
>DEFINITELY not sex blind. Don't forget all the Clinton stuff. Should we be? That
>is a fine line. Obviously each of us have moral responsibilities, yet we
>should't go back to the 'cruisades' times and start gay bashing either.
>
>Peter
>
>>
>> then it should not matter or be any significance if a rider is gay or
>> straight or likes to wear diapers and get spanked --- therefore, not
>> anything worth reporting, or pointing out.
>>
>> Jim ff782bc1db
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