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79 Cards in this Set

  • Front
  • Back
athletes competing in a lower weight class gives an athlete a
mechanical advantage over a smaller stature opponent
athletes can lose up to 22 pounds of body water in one day through what methods?
-sauna
-exercising in a plastic sweat suit
-taking diuretic drugs
taking diuretic drugs increase ______
water loss from the kidneys
-reduces endurance and performance (especially in hot weather)
-kidney malfunction and heat-related illness
-death is a possibility
adverse effects of weight loss by dehydration
7% or more of total body weight for male athletes and 12% or more for female athletes
safe body fat set by NCAA and many states
-to consume a diet that includes moderate to high amounts of carbohydrates
-to select a variety of foods in accordance with MyPyramid
-to include grain, starchy vegetables and fruits to provide carbohydrates to maintain liver
and muscle glycogen stores
anyone who exercises vigorously (especially more than one hour per day) on a regular basis
needs these things
carbohydrate intake should be at least
5 grams per kg of body weight
aerobic training and endurance athletes (over 60 minutes per day)
may require as much as
7 grams per kg of body weight
when exercise duration approaches several hours per day
carbohydrate recommendation increases up to
10 grams/kg of body weight
triathletes and marathoners should consider eating
500 to 600 grams of carbohydrates
per day
-prevents chronic fatigue
-loads muscle and liver cells with glycogen
carbohydrate increase
athletes should obtain at least ____% of their total energy needs from carbohydrate
60%
-pasta and rice
-potatoes and bread
-fruit and fruit juices
-many breakfast cereals
-sports drinks that are appropriate for carbohydrate loading
high-carbohydrate food choices
-reduces the risk of bloating
-reduces the risk of intestinal gases
dietary fiber during the final day of training
maximizes the amount of energy stored in the form of muscle glycogen
carbohydrate loading
-marathons and triathlons
-cross country skiing
-soccer and tournament play basketball
some appropriate activities for carbohydrate loading
-single basketball and football games
-weight lifting
-most track and field events; walking and hiking
some inappropriate activities for carbohydrate loading
-water is stored in muscles with extra glycogen (3 grams of water with each
gram of glycogen)
-muscle stiffness and heaviness
-increased water weight can detract from performance
disadvantages of carbohydrate loading
-diet containing up to __% of calories from fat is recommended for athletes
-monounsaturated sources (ex. canola oil) are emphasized
-saturated fat and trans fat intake should be limited
35%;Fat Needs
typical protein recommendations for athletes should range from
1.0 to 1.6 grams of protein/kg of
body weight
RDA of protein
.8 grams per kilogram of body weight for non-athletes
PCr and carbohydrate (not extra protein) primarily fuel the body during
strength-training activities
-increases calcium loss in the urine
-leads to increased urine production (possibly compromising body hydration)
-may increase the risk of kidney stones
-a decrease in carbohydrate intake (in a high protein diet) may lead to fatigue
problems with excessive protein intake
-gymnastics or other events where low body weight is crucial
-vegetarian athletes
individuals that require balanced multivitamin and mineral supplement
increased ____________ use may require antioxidant protection
oxygen
diet rich in antioxidants
-fruits and vegetables
-whole grains and vegetable oils
antioxidant systems in the body increase in activity as
exercise training progresses
iron is involved in oxygen transport, ____ blood cell production and energy production
red
athletes on special diets such as low-calorie and vegetarian diets may be low in
iron
distance runners should pay attention to iron intake because their intense workouts may
lead to
GI bleeding
exercise causes blood plasma volume to expand (results in blood dilution)
sports anemia
reduced bone density increases the risk of
osteoporosis
low calcium intakes increases the risk for _________ fractures
bone
average fluid needs for an adult are
~9 cups/day for women and ~13 cups/day for men
maintain body’s ability to regulate internal body temperature and keep cool
fluid intake
heat production in contracting muscle can rise _______ above that of resting muscle
15 to 20 times
an athlete should aim to replace the total amount of fluid lost during
exercise
based on differences in body mass, environmental conditions, level of training, event
duration and genetics
fluid and electrolyte needs
goal is a loss of no more than___ of body weight during exercise
2%
for every pound lost, ______ of water should be consumed during exercise or immediately after exercise
2.5 to 3 cups
after exercise, ___ cups of fluid should be consumed for every pound lost
2.5 to 3
improves athletic performance during endurance events or sports that require a high degree of alertness
some studies show caffeine
can lead to shakiness, nervousness, anxiety, nausea and insomnia
excessive caffeine consumption
diuretic effect of caffeine ____support optimal hydration
does not
loss of body fluid and then depletion of blood volume
heat stress causes
sweat loss during _____ exercise ranges from 3 to 8 cups per hour
prolonged
an increase in ___________ results in slower evaporation rates and sweating is ineffective
humidity
increased body temperature associated with dehydration is most evident when the amount of
water loss exceeds ___% of body weight
2%
-headache and dizziness
-profuse sweating, nausea and vomiting
-muscle weakness and visual problems
-flushing of the skin
common symptoms of heat exhaustion
treatment for heat exhaustion
-take to a cool environment and remove excess clothing
-sponge body with tap water
-fluid replacement
occur in individuals who have experienced large sweat losses from exercising several hours
in a hot climate and consumed large amounts of water without replacing _________ losses
sodium
heat cramps occur in ___________ muscle
skeletal
heat cramps consist of a contraction lasting ______ at a time
1 to 3 minutes
internal body temperature of 104oF or more
heat stroke
during a heat stroke __________ ceases and blood circulation is reduced
sweating
during a heat stroke skin is hot and _________
dry
-nausea and irritability
-confusion and poor coordination
-seizures and in severe cases, coma
heat stroke symptoms
treatment for heat stroke
-administer ice packs or cold water to the skin
-seek medical help
sports that require less than 60 minutes of exertion or when total weight loss is less than 5 – 6
pounds the primary concern is ____ replacement
water
for exercise that extends beyond 60 minutes ___________ (sodium) and carbohydrate
replacement becomes important (as well as water)
electrolyte
components of a sports drink
water, carbohydrate, and electrolytes
-include sodium, potassium and chloride
-enhance water and glucose absorption from the intestine
-stimulates thirst
-help maintain blood volume
electrolytes in a sports drink
-provide glucose
-aids in flavor, encouraging individuals to drink
-helps delay fatigue during endurance sports
-typically contains 6% to 8% sugar
carbohydrates in a sports drink
light meal supplying up to ____ kcal should be eaten ____before an endurance event
1000; 2 to 4 hours
prolonged exercise decreases _____ and low levels of blood glucose leads to physical and mental fatigue
muscle glycogen stores; low levels of blood glucose
consumption of ____ during activity is not likely to translate into better performance
fat
carbohydrate rich foods providing about _____ grams of carbohydrate/kg should be consumed within ___ hours after endurance exercise
1 to 2; 2
muscles are very ______________ sensitive
insulin
high-glycemic load carbohydrates contribute to _______
glycogen synthesis
-availability of adequate carbohydrate
-ingestion of carbohydrate as soon as possible after completion of exercise
-selection of high-glycemic load carbohydrates
key factors for achieving the most rapid replenishment of muscle glycogen after exercise
aid is a mechanical, nutritional, psychological, pharmacological or physiological
substance or treatment intended to directly improve exercise performance
ergogenic
-sufficient water and electrolytes
-lots of carbohydrates
-balanced and varied diet consistent with MyPyramid
ergogenic aids
-artichoke hearts and bee pollen
-freeze-dried liver flakes and seaweed
-dried adrenal glands from cattle and consumption of salt tablets
ineffective substances
-rationale is to increase PCr in muscles, increase ATP concentration
-may improve performance in weightlifting or sprinting
-little is known about the long-term use
creatine
-rationale is to counter lactic acid build-up
-may be effective in wrestling
-nausea and diarrhea may occur
sodium bicarbonate
-rationale is to increase the use of fatty acids for muscle fuel and promote
mental alertness
-may provide energy for some athletes
caffeine
-leucine, isoleucine and valine
-energy source if carbohydrates are depleted
-carbohydrate feeding may negate the need for BCAA supplements
branched-chain amino acids (BCAA)
anabolic steroids
growth hormone
blood doping
GHB
dangerous or illegal substances/practices
hormone involved in blood doping to increase RBC number
erythropoietin