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Nutrition Exam #3
Chapter 16
73
Biology
Not Applicable
03/19/2013

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Term
Fitness involves
Definition
Physical activity or exercise
Term
Fitness includes:
Definition
Cardiorespiratory endurance, flexibility, and muscle strength/endurance
Term
Today's world encourages sedentary lifestyles that leads to
Definition
several chronic diseases
Term
During physical activity, the muscles, heart, and lungs need extra energy to
Definition
deliver nutrients, oxygen, and remove waste
Term
Amount of energy needed for physical activity depends on three factors:
Definition

Muscle Mass

Body weight

Type of actvity

Term
What type of activity is best for weight loss?
Definition
moderate physical activity
Term

-Decreases risk of cardiovascular disease, obesity, high blood pressure, diabetes, cancers, and osteoporosis.

-Builds and maintains healthy bones and lean muscles and improves circulation and lung function.

-Better control of body weight, blood pressure, blood glucose, and cholesterol and reduces adipose fat.

 

Definition
Benefits of Fitness
Term

-Reduces feeling of depression and anxiety.

-Promotes improved mood, feeling of well-being, and improves restful sleep.

-Enhances independent living, improves quality of life, and resistance to colds and other infectious diseases.

Definition
Benefits of Fitness
Term
Can you exercise when you have syptoms of sickness above the neck like:  runny nose, sneezing, and scratchy throat
Definition
Yes
Term
Should you exercise when you have symptoms of sickness below the neck like:  Fever, aching muscles, productive cough, vomitting, and diarrhea?
Definition
No
Term
How many days of the week should you engage in strength and flexibility activities?
Definition
2-3
Term
How many days of the week should you engage in moderate or vigorous activities?
Definition
4-6
Term
How many days should you be as active as possible?
Definition
Every day
Term
How much should you exercise for health benefits?
Definition
30 minutes a day, most days of the week
Term
How much should you exercise to maintain a healthy body weight?
Definition
60 minutes
Term
A person must develop enough flexibility, muscle strength, and cardiorepiratory endurance to meet the everyday demands to be considered
Definition
physically fit
Term

-Individualized

-Cardorespiratory

-Muscle strength and endurance

-Flexibility

-Choose an activity you enjoy

-Be active all week

-Use proper equipment, attire, and form when exercising

 

This is called:

Definition
A Balanced Fitness Program
Term
The training principle that a body system, in order to improve, must be worked at different frequencies, durations, or intensities that gradually increase demands is called
Definition
Progressive Overload Principle
Term
How often an activity is performed.
Definition
Increase frequency
Term
The degress of exertion.
Definition
Increase intensity
Term
The length of time.
Definition
Increase duration
Term
Considering the Progressiver Overload Principle.  What are things you should do?
Definition

-Include warm-ups and cool-downs.

-Challenge yourself, but not everytime you exercise.

-Pay attention to body signals and build intensity slowly.

Term
The length of time a person can remain active with an elevated heart rate, the ability of the heart, lungs, and blood to sustain demand is called
Definition
Cardiorespiratory Endurance
Term
Cardiorespiratory Endurance
Definition

-Increases cardiac output (oxygen delivery)

-Increases blood volume with each heartbeat

-Slows resting pulse (70bpm adult, 50 bpm or lower for adults with cardo-endurance)

-Increases breathing efficiency-lungs become stronger

-Imporoves blood circulation and reduces blood pressure.

Term
Muscle gain in size and strength, the result of repeated activity is called
Definition
Hypertrophy
Term
Muscle loss in size and strength, the result of inactivity is called
Definition
Atrophy
Term

- Fit muscles use oxygen efficiently, reducing the heart's workload.

- Muscles can burn fat longer.

 

This is due to:

Definition
Muscle Conditioning
Term
Carbs turn to glucose and then are stored as
Definition
glycogen in the liver
Term
During physical activity a mixture of fuels are used, but one may be predominantly used during activity depending on:
Definition
Diet, intensity, and duration
Term
What nutrients need attention?
Definition
Water, Iron, and Sodium
Term
A high-energy compound that delivers energy instantaneously
Definition
ATP
Term
A high-energy compund in the muscles that is used anaerobically.
Definition
CP (creatine phosphate)
Term
The first 20 minutes of activity a person primarily uses
Definition
Glycogen
Term
After 20 minutes of a activity a person uses less
Definition
glycogen and more fat
Term
What increase glycogen stores and enhance endurance?
Definition
high-carbohydrate diets
Term
What type of activities uses glycogen slowly?
Definition
Moderate
Term
What type of activities use glycogen quicly and lactate forms?
Definition
Intense
Term
What type of activities clears lactic acid?
Definition
Low
Term
During what type of activity does lactic acid accumulate and this activity can only be maintained for 1-3 minutes?
Definition
High Intensity
Term
Lactate is converted to ________in the liver.
Definition
glucose
Term
What brings nervous system to halt making continued exertion at the same intensity almost impossible?
Definition

exhaustion of glucose

"Hitting the Wall"

Term
How do you maximize glucose supply?
Definition

- High-carbohydrate diet

- Intake glucose during activities longer than 45 minutes

-Eat high-carbohydrate foods after activity

Term
What should you do if activities last longer than 45 minutes?
Definition

- Eat light carb snack (under 200 cal)

- Eating a carbohydrate meal within 15 minutes accelerates glycogen storage by 300%

- High-carb meal with 2 hrs.

- High-glycemic index foods

Term
Muscles that repeatedly deplete glycogen through hard work will
Definition
store greater amounts of glycogen
Term
Conditioned muscles rely less on glycogen and more on ______ for energy.
Definition
Fat
Term
Trained muscle cells have more ________ and can use _______ better.
Definition
mitochondria, oxygen
Term
What type of cells depend more heavily on anaerobic pathways?
Definition
Untrained muscle
Term
After 20 mins. of physical activity the body uses ______ as it major fuel.
Definition
Fat
Term
As intensity increases, fat makes what type of contribution?
Definition
less
Term
What must be abundant to break down fat?
Definition
Oxygen
Term
Better trained muscles use more
Definition
fat
Term
The better treained in cardio-exercies, the stronger the heart and lungs, which helps deliver
Definition
more oxygen
Term
If better trained, glucose release from the liver is prevented, so the body relies more on
Definition
fat
Term
Protein is used in
Definition
muscle building
Term
Synthesis of protein is ________ during activity.
Definition
suppressed
Term
After activity protein synthesis _______.
Definition
accelerates
Term
Repeated activities cause __________ to support needs.
Definition
body adaptations
Term
During physical activity ______ use amino acids for fuel.
Definition
muscles
Term
Diets rich in carbohydrates allow the body to use less ______ for fuel.
Definition
protein
Term
Athletes need more ______than sedentary people.
Definition
protein
Term
Athletes need to meet ______ first.
Definition
carbohydrates
Term
1 liter of sweat dissipates ____ calories of heat.
Definition
600
Term
What two things is 15-20 greater when active than at rest?
Definition
muscle heat and a cooling mechanism
Term
What improves electrolyte retention?
Definition
training
Term
How should you replace elecrolytes?
Definition
Eating a regular diet meeting energy and nutrient needs.
Term
What is a above normal body temperature called?
Definition
Hyperthermia
Term
When body heat builds up and triggers maximum sweating without sweat evaporation this is called
Definition
hyperthermia
Term
A dangerous accumulation of body heat and loss of body fluid is called
Definition
heat stroke
Term
What do you do to prevent heat stroke?
Definition
drink fluids, rest in the shade, and wear appropriate clothing
Term
What is it called when you have below normal body temperature?
Definition
Hypothermia
Term
What are the symptoms of hypothermia?
Definition
shivering, weakness, disorientation, death
Term
How do you prevent hypothermia?
Definition
drink fluids and wear appropriate clothing
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