chapter 9 quiz
Which activity most enhances flexibility?
stretching
Active people need nutrient-dense foods such as ____ to supply vitamins, minerals, and phytochemicals.
sweet potatoes
Active people do not need extra fluid in cold weather.Active people do not need extra fluid in cold weather.Active people do not need extra fluid in cold weather.
false
Iron-deficiency anemia impairs physical performance because iron helps deliver the muscles' glucose.
false
Taking vitamin or mineral supplements just before competition will help to improve performance.
false
The body is able to store unlimited amounts of glycogen in muscles.
false
The first symptom of dehydration (besides thirst) is:
fatigue
Sports drinks offer some advantages over water for athletes who:
need to replenish electrolytes.
Progressive weight training is not associated with:
reduced lean body tissue.
One thing to consider when attempting to increase daily physical activity for health is to:
seek a doctor's advice if you have a serious chronic illness.
A woman wants to begin a weight training program. What advice would you give her?
Her training will be a good way to strengthen and firm her muscles.
An athlete should weigh herself before and after her workout to determine how much fluid she should replace.An athlete should weigh herself before and after her workout to determine how much fluid she should replace.
True
By strengthening the muscles of the back and abdomen, resistance training can improve posture.
true
Examples of aerobic physical activity include all of the following except:
using weight machines.
Which factor does not influence how much glucose a person uses during physical activity?
age of the person exercising
During non-endurance exercise, the optimal beverage for replacing fluids is:
cool water.
Strategies that help endurance athletes maintain their blood glucose concentrations for as long as they can include:
eating a high-carbohydrate diet regularly.
To prevent hyponatremia during prolonged events, athletes should:
favor sports drinks over water during the event.
Which group is most prone to iron deficiency?
female athletes
Characteristics of cardiorespiratory endurance include:
increased cardiac output and oxygen delivery.
Lactate buildup in working muscles:
indicates that anaerobic breakdown of glucose has occurred.
Sports anemia:
is generally considered a normal adaptation to endurance training.
Glycogen storage is:
limited to less than 2,000 calories.
A benefit of cardiorespiratory endurance training is that:
the heart muscle grows larger and stronger.
The main role of ____ in supporting physical activity is to serve as an antioxidant, protecting tissues from oxidation.
vitamin E