Ch 4- Becoming physically fit
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why do young adults value physical fitness?
being physically fit helps them look and feel better
physical fitness
set of attributes people have or achieve relates to the ability to perform physical activity
physical activity
any bodily movement produced by skeletal muscle results in energy expenditure
exercise
subcategory of physical activity planned structured, repetitive, purposive objective=improve or maintain physical fitness
exercise trends
weekend vs. weekdays school year vs. summer activities you enjoy, do not enjoy, or want to try
results of physical fitness
body systems function at optimal efficiency energy to meet demands of life without fatigue capacity to handle unforeseen emergencies *very key- makes it easier to handle emergencies
Surgeon general’s report 1996
• 30 minutes of moderate activity per day • simply emphasized increasing activity • burn 150 calories a day or 1000 a week
dietary guidelines for americans 2005 (in relation to amount of exercise needed to stay healthy)
60 minutes daily moderate/vigorous daily activity to prevent weight gain 60-90 minutes moderate daily to sustain weight loss
dietary guidelines for americans (2010)
for adults (18-64) 2 hours and 30 minutes a week moderate 1 hour 15 minutes a week vigorous 5 or more hours a week is best spread out over 3 days include strength training 2 days/week
ACSM
american college of sports medicine look at research and put out recommendations
principles of training
overload, specificity, reversibility/regression
over load
work harder than usual
specificity
work the area you want to improve
reversibility/regression
use it or lose it
Cardiorespiratory endurance
foundation for who body fitness improvement of heart, lung, and blood vessel function helps body work longer and at greater levels of intensity
aerobic
with oxygen, helps cardiac
anaerobic
without oxygen
to help cardio respiratory endurance
3-5 times a week 64-91% of max heart rate duration= 20-90 minutes mode= vigorous, rhythmic, and continuous
calculating target heart rate rage
220-age= max max %= target HR
perceived exertion
how hard it feels to you
3 part workout
warm-up, conditioning, cool down principle of gradual progression- slowly start up and slowly slow down
Physiological benefits of cardio reparatory health
reduced in RHR improve heart efficiency increase rest for the heart between beats increased oxygen-carrying capacity of blood improve exercise performance on timed test improve blood lipid profile
body composition benefits of cardio reparatory health
reduced body fat percentage increased lean body mass firmer muscles
psychological benefits of cardio reparatory health
enhance self-esteem increased self-discipline decreased anxiety improved quality of sleep decreased levels of depression increased relaxation