Kinesiology exercise physiology lecture

Kinesiology 30 Overview

  • Kinesiology Course Structure

    • All Kinesiology majors will take Kinesiology 30 (5:15)

    • If enrolled in Newman Movement, an additional lab application course (Kinesiology 30-535) will be required

    • The lab course focuses on applying theoretical knowledge and performing tests related to exercise physiology.

  • Learning Objectives

    • Discuss the history of exercise physiology

    • Understand the relevance and application of exercise physiology in kinesiology careers

    • Identify general and key principles related to exercise physiology

    • Explore components of health and skill physical fitness

    • Analyze quantitative data on physical fitness

History of Exercise Physiology

  • Ancient Greece and Olympics

    • Historic fascination with maximizing human performance dates back to the Olympic Games in ancient Greece.

    • Early inquiries aimed at enhancing athletic performance and understanding human capabilities.

  • Foundation in the United States

    • In 1927, Harvard researchers initiated the study of muscle fatigue.

    • Focused on understanding why some individuals could exercise for longer periods without fatigue.

  • Evolution of Focus

    • Beginning with muscle metabolism, distinguishing between slow-twitch and fast-twitch muscles.

    • Shift in the 1950s towards the cardiorespiratory system (heart and lungs).

    • Recognition that muscles require oxygen to perform optimally.

    • In 1980, the focus broadened to applied exercise physiology, considering health beyond athletic performance, supporting individuals with diseases like cardiovascular and lung conditions.

Organizations in Exercise Physiology

  • American College of Sports Medicine (ACSM)

    • Established in 1954, initially concentrating on athletic physiology.

    • Expanded to include applied principles across various populations and health issues.

    • Publishes the notable journal "Medicine and Science in Sport and Exercise" emphasizing the importance of exercise for overall health, not just athletes.

  • National Institutes of Health (NIH)

    • A significant funding body for research in exercise physiology, particularly in research-intensive universities like LSU.

    • The funding process influences research directions and focus areas.

Defining Exercise Physiology

  • Exercise Definition

    • Exercise is defined as:

    • Planned, structured, repetitive activity that places physical stress on the human body

    • Characterized as positive or beneficial stress.

    • Importance of regular exercise to prevent deconditioning and diseases.

  • Physiology Definition

    • Physiology pertains to the study of how human body functions.

    • Merges with exercise to study body's responses and adaptations over time to exercise stress.

Importance of Studying Exercise Physiology

  • Promotes health and wellness through exercise.

  • Observes physiological and mental benefits from regular physical activity.

  • Aids in assessing and managing diseases and health conditions through exercise programs.

  • Enhances understanding and maximization of human performance, especially relevant in combating issues like obesity and diabetes.

Components of Physical Fitness

  • Health-Related Fitness Components

    • Aerobic Capacity: Duration one can sustain moderate to high-intensity exercise.

    • Body Composition: Ratio of fat mass to fat-free mass.

    • Flexibility: Range of motion available in a joint.

    • Muscular Endurance: Ability of skeletal muscles to exert force repeatedly.

    • Muscular Strength: Maximum force exerted by skeletal muscles in a single contraction.

  • Skill-Related Fitness Components

    • Agility: Ability to change body position quickly and accurately.

    • Balance: Ability to maintain the body's position regardless of support.

    • Coordination: Smooth and accurate task performance.

    • Power: Muscle force generation quickly.

    • Reaction Time: Speed of response to stimuli.

    • Speed: Quick movement ability and time taken to complete tasks.

  • Activity Assessments

    • Assessments provide a quantitative perspective on performance and fitness levels.

Key Concepts in Exercise Physiology

  • Good vs. Bad Stress

    • Good stress: Promotes productive outcomes for health

    • Bad stress: Interferes with normal biological functions resulting in adverse adaptations.

  • Acute vs. Chronic Effects of Exercise

    • Acute Effects: Immediate responses to exercise (e.g., increased heart rate, breathing rate).

    • Chronic Effects: Long-term adaptations from consistent exercise (e.g., improved cardiovascular health, muscular strength).

    • Regular exercise requires commitment to yield chronic positive outcomes.

Definitions & Differences

  • Physical Activity (PA): Any bodily movement, whereas

  • Exercise: Intentional, structured, repetitive physical activity aimed at achieving specific fitness goals.

  • Activities of Daily Living (ADLs): Basic personal tasks performed daily that involve physical activity related to health assessments.

  • Physical Fitness: Broad term encompassing overall bodily capacity for various activities, separated into health-related and skill-related components.

Physiology of Exercise

  • Overview

    • The science of physiological responses to physical stress from exercise.

  • Energy Demands

    • Increased energy demand during exercise necessitates ATP production.

  • Cardiopulmonary System Interaction

    • Understanding the anatomy and functions of the heart and lungs is crucial for grasping exercise physiology.

    • Heart Structure:

    • Divided into four chambers: right atrium, right ventricle (deoxygenated blood flow) and left atrium, left ventricle (oxygenated blood flow).

    • Function: Right side pumps blood to lungs for oxygenation, left side pumps oxygenated blood to the body.