Chapter 10

Nutrition authorities other than the DRI committee recommend _____ grams protein per kilogram of body weight each day for an endurance athlete.​

1.2 to 1.4

A person who continues exercising moderately for longer than ____ minutes begins to use less glucose and more fat for fuel.​

20

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

Weight-bearing activity may interfere with maintenance of bone strength.​

False

Strategies that help endurance athletes maintain their blood glucose concentrations for as long as they can include:​

eating a high-carbohydrate diet regularly.

The first symptom of dehydration (besides thirst) is:

fatigue.

As physical activity continues beyond the first few minutes, which of the following flows into the bloodstream to signal the liver to liberate its stored energy nutrients?​

glucagon

Characteristics of cardiorespiratory endurance include:​

increased cardiac output and oxygen delivery.

Lactate buildup in working muscles:

indicates that anaerobic breakdown of glucose has occurred.

Recommendations have been established for moderate physical activity because:

physically active people live longer than those who are inactive.

By strengthening the muscles of the back and abdomen, resistance training can improve posture.

True

Most athletes probably need somewhat more protein than do sedentary people.

True

Muscle hypertrophy is an increase in size in response to use.

True

People who regularly engage in physical activity live longer on average than those who are physically inactive.

True

Which factor does not influence how much glucose a person uses during physical activity?​

age of the person exercising

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.

The amount of protein needed to fuel physical activity varies depending on:​

the extent of training, with higher degrees of training requiring less protein at a given intensity.

Examples of aerobic physical activity include all of the following except:

using weight machines.

The main role of ____ in supporting physical activity is to serve as an antioxidant, protecting tissues from oxidation

vitamin E

An endurance athlete can lose ____ of fluid an hour during activity.​

​1.5 quarts

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.

Which nutrient is important for athletes because it is needed for the formation of collagen?

​vitamin C