modern racing cars, racing drivers require a high level of fitness, focus, and the ability to concentrate at high levels for long periods in an inherently difficult environment. Racing drivers mainly complain about pains in the lumbar, shoulder, and neck regions. Racing drivers experience extremely large g-forces because formula cars and sports prototypes generate more downforce and are able to corner at significantly higher speeds. Formula 1 drivers routinely experience g-loadings in excess of 4.5 g. See also Outline of auto racing List of auto racing tracks Motorcycle racing Race track List of auto racing films Racing video game References External links Sanctioning bodies Motorsports UK Association American Le Mans Series (ALMS) Indy Racing League (IRL) World Rally Championship (WRC) Fédération Internationale de l'Automobile (FIA) Grand American Road Racing Association International Conference of Sports Car Clubs (ICSCC) International Hot Rod Association (IHRA) International Motor Sports Association (IMSA) National Auto Sport Association National Association for Stock Car Auto Racing (NASCAR) National Hot Rod Association (NHRA) No Prep Racing SCORE International Off-Road Racing Sports Car Club of America (SCCA) United States Auto Club (USAC) Formula One (F1) Confederation of Australian Motorsport (CAMS) Best In The Desert Off-Road Racing