Fitness Basics
description
Transcript of Fitness Basics
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Fitness BasicsGETTING STARTED AND STAYING MOTIVATED
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Purpose & Overview
− To provide the knowledge necessary to begin a safe, effective exercise program.
− The following topics will be discussed:• Components of physical fitness• Before beginning an exercise program• Exercise programming
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Components of Physical Fitness
− Cardiovascular (aerobic) fitness− Muscular strength and endurance− Flexibility− Body composition
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Cardiovascular (CV) Fitness− Ability of the heart and blood vessels to deliver oxygen-rich
blood to working musculature− Measured by oxygen consumption (volume of oxygen
consumed—VO2)
− Indirectly measured by heart rate− Increased cardiovascular fitness is linked to reduced
cardiovascular disease risk
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Components of CV Fitness
− Resting heart rate− Blood pressure− VO2 maximum
− Stroke volume− Cardiac output
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Muscular Strength and Endurance
− Strength: The ability of a muscle to exert maximum force
− Endurance: The ability of a muscle to exert sub-maximal force over an extended period of time
− Increased strength/endurance = increased lean muscle mass = increased metabolic rate
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Flexibility
− Range-of-motion at a particular joint− Varies with different joints− Limited by tightness of muscles and connective
tissue surrounding the joint− Decreased flexibility leads to increased risk of
injury
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Body Composition
− Percent body fat− Lean mass versus fat mass− Excessive body fat = increased health risk− Average percent body fat:
• Males = approximately 15 percent• Females = approximately 23 percent
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Before Beginning
− Health risk factors and stratification− When to see your doctor− Get a fitness assessment
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Health Risk Factors
− Age− Family history of heart disease− Cigarette smoking− Hypertension− Dyslipidemia (higher-than-normal amounts of cholesterol and
fat in the blood)− Pre-diabetes− Obesity− Sedentary lifestyle
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Risk Stratification− Low Risk
• Asymptomatic• One or fewer risk factors
− Moderate Risk• Asymptomatic• Two or more risk factors
− High Risk• Symptomatic• Known cardiovascular, pulmonary, or metabolic disease
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When to See Your Doctor
− You meet the criteria for moderate or high risk− You have any musculoskeletal injuries or other physical
limitations
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Get a Fitness Assessment− A thorough assessment will measure all components of
physical fitness− Two primary functions:
• Determine “baseline” fitness level• Evaluate progress
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Types of Assessments
− Body mass index (BMI), blood pressure, resting heart rate− Skin fold or bioelectric impedance (body composition)− Step, bike or treadmill test (cardiovascular fitness)− Sit and reach test (flexibility)− 1-minute crunch test (muscular endurance)− Push-up test (muscular strength/endurance)
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Exercise Programming
− Cardiovascular training− Strength training− Flexibility training− A good exercise program
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Cardiovascular Training
− What is cardiovascular exercise?− Program recommendations− Benefits of cardiovascular training
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What is Cardiovascular Exercise?
− Involves rhythmic movement of large muscle groups over an extended period of time
− Increases heart rate, breathing rate, blood flow, and perspiration
− Can include walking, jogging, cycling, swimming, hiking, cross-country skiing, stair-climbing, etc.
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Program Recommendations
− Frequency: most days of the week− Intensity: 60-85% of your predicted heart rate max
(target heart rate zone)• Heart rate maximum = 220 minus your age• Lower End = .60 × 220 minus your age• Upper End = .85 × 220 minus your age
− Type: walking, jogging, cycling, etc.− Time: 20-60 minutes− Include warm-up and cool-down periods
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Benefits of CV Training
− Reduced blood pressure− Lower resting heart rate− Increased stroke volume of
heart when pumping− Reduced blood cholesterol
levels− Reduced fasting glucose
− Reduced body fat− Lower risk of cardiovascular
disease− Lower risk of pre-diabetes
or type II diabetes− Reduced risk of colon
cancer
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Strength Training
− What is strength training?− Common terms− Program recommendations− Benefits of strength training
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What is Strength Training?− An exercise/activity in which a muscle/muscle group exerts
themselves against an external force− What are these external forces?
• Gravity• Your own body weight (calisthenics)• Resistance tubing/bands• Free weights (dumbbells, barbells, etc.)• Machines (Nautilus, Cybex, etc.)
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Common Terms− Repetitions (“Reps”): Repeated movements against an
opposing force through a full range of motion− Sets: Groups of repetitions performed consecutively
before resting− Rest: Time between sets, exercises, or exercise sessions− Example: “Perform 2 sets of 12 repetitions with 30 seconds
of rest between sets.”
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Program Recommendations
− 2 to 3 sessions per week (skip a day between sessions)− Choose 8 to 10 exercises per session (one for each
major muscle group)− Perform 1 set of 12 to 15 reps per exercise with 30
seconds of rest between exercises− Perform large muscle exercises first and core (abs and
lower back) exercises last
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Benefits of Strength Training
− Increased strength− Increased lean muscle mass− Increased basal metabolic rate− Stimulates new bone growth
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Flexibility Training
− Stretching exercises− Program recommendations− Benefits of flexibility training
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Stretching exercises − Exercises that elongate, to the point of slight tension,
the muscles and connective tissue surrounding a joint − Two types:
• Static (preferred)• Dynamic (usually sport-specific)
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Program Recommendations
− Stretch all major muscle groups at the conclusion of each exercise session
− Hold each stretch for 15-20 seconds− Slow, controlled stretches to the point of slight tension…NO
BOUNCING!
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Benefits of Flexibility Training
− Increased range-of-motion− Reduced muscle tension− Reduced risk of injury− Increased feeling of relaxation
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A Good Exercise Program…
− Accounts for your health status and fitness assessment results− Addresses all components of physical fitness− Progresses gradually as your fitness level improves− Is enjoyable!
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References
− ACSM’s Guidelines For Exercise Testing And Prescription, 8th edition, Franklin, Barry A., PhD. (Senior Editor) 2009.
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