Lifestyle Physical Activity PDF 1/21/2025

1/21/2025 Physical activity performed for the sake of a task related outcome. ADL’s – Occupational Activity...

1/21/2025 Physical activity performed for the sake of a task related outcome. ADL’s – Occupational Activity – Physical Transportation 1 Lifestyle Activity: Who is more active? This person moves around all day but does not do any formal exercise. This person has a desk job and goes to the gym for 1 hour each night. 2 What factors affect lifestyle PA? PHAWG 3 1  1/21/2025 Leisure-time physical activity Physical activity performed for the sake of the activity itself. 4 From: All-Cause Mortality Associated With Physical Activity During Leisure Time, Work, Sports, and Cycling to Work Arch Intern Med. 2000;160(11):1621-1628. doi:10.1001/archinte.160.11.1621 What is relative risk? Copyright © 2012 American Medical Association. All rights reserved. 5 Exercise Planned, structured, leisure fitness time PA performed to performance improve or maintain: health Incorporates prescription Frequency, Intensity, variables: Duration, Mode 6 2  1/21/2025 Exercise: “Planned, structured…performed to improve or maintain fitness” Components of Fitness Variable Cardiovascular Fitness VO2 max Muscular Strength Maximal Force Muscular Endurance Repeated Submaximal Force Body Composition Body fat % Flexibility R.O.M around a joint 7 Classifications of Physical Activity Physical Activity Leisure Time Lifestyle Activity Activity Occupational ADL’s Exercise Sports/Hobbies Activity 8 Study Guide Questions Define the various types of physical activity. How do we know that humans are engineered for physical activity? What factors affect Lifestyle physical activity? Why is lifestyle physical activity so important? 9 3  1/21/2025 Defining Sedentary Behavior Activities that do not increase What are some activities that energy expenditure may be considered substantially above rest (Pate sedentary? et al., 2008) 10 No “formal” exercise but minimal sedentary behaviors “Formal” exercise but plenty of sedentary behavior. 11 The American adult spends 7.7 hours day in sedentary behavior. – NOT INCLUDING SLEEP! Waist circumference increases 1.25 inches for every 10% in sedentary time. Do you watch TV (screentime) three or more hours per day? – You are 64% more likely to die from heart disease Negative health effects of sedentary behavior occur independent of whether or not an individual is physically active, however physical activity participation may offset the effects. 12 4  1/21/2025 What happens when you sit? As soon as is sit: After one hour: Caloric demand Fat oxidation decreases decreases Reduced blood Insulin sensitivity flow decreases 13 Prolonged time spent in sedentary behaviors is considered an important risk factor for abnormal glucose and lipid metabolism, type 2 diabetes and all-cause mortality independent of physical activity! 14 Let’s Discuss Think of our definition of physical activity…. Why does sedentary behavior have negative health consequences? 15 5  1/21/2025 Physical Activity Intensity 16 Physical Activity Intensity Term MET level Example Light 6.0 Jogging 6.4 mph Stationary bike 130w oA “MET” stands for metabolic equivalent and is a measure of oxygen consumption. o1 MET= 3.5 ml/kg/min) oIt is estimated that a rest most individuals are at 1 MET. oThe energy used at 3.5 METs is 3.5x that used at 1 MET. 17 Physical Activity vs. Physical Fitness 18 6  1/21/2025 Ability to perform physical work (or physical activity) Physical Ability to perform the required tasks at hand without fatigue Fitness or undue stress Improved fitness is often the outcome of higher volumes of physical activity 19 20 21 7  1/21/2025 22 Simple Model Physical Health Activity 23 Relationship of PA, Fitness and Health PHYSICAL ACTIVITY IMPROVED HEALTH Adequate Intensity IMPROVED FITNESS 24 8  1/21/2025 Study Guide Questions What is a MET? What is sedentary behavior? How much of a factor is low cardiorespiratory fitness on death? Explain how it compares to other conditions (from article). What’s the difference between physical activity and physical fitness? How are they related? 25 9