Download

Chapter 10 Nutrients, Physical Activity, and the Body’s Responses






Advertisement
/ 29 []
Download Presentation
Comments
chavez
From:
|  
(1032) |   (0) |   (0)
Views: 110 | Added:
Rate Presentation: 3 1
Description:
Chapter 10 Nutrients, Physical Activity, and the Body’s Responses. Nutrition : Concepts & Controversies, 12e Sizer/Whitney. Introduction. Physical activity and nutrition Needs Energy-yielding nutrients Vitamins and minerals Results Regulation of energy-yielding nutrients
Chapter 10 Nutrients, Physical Activity, and the Body’s Responses

An Image/Link below is provided (as is) to

Download Policy: Content on the Website is provided to you AS IS for your information and personal use only and may not be sold or licensed nor shared on other sites. SlideServe reserves the right to change this policy at anytime. While downloading, If for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.











- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -




Chapter 10 nutrients physical activity and the body s responsesSlide 1

Chapter 10Nutrients, Physical Activity, and the Body’s Responses

Nutrition: Concepts & Controversies, 12e Sizer/Whitney

IntroductionSlide 2

Introduction

  • Physical activity and nutrition

    • Needs

      • Energy-yielding nutrients

      • Vitamins and minerals

    • Results

      • Regulation of energy-yielding nutrients

      • Body composition

      • Daily calorie allowance

FitnessSlide 3

Fitness

  • Depends on physical activity or exercise

    • Movement, muscle contraction, & energy expenditure

  • Benefits

    • Chronic disease

    • Longevity

    • Disease resistance

    • Numerous other benefits

Physical activity guidelines for americansSlide 4

Physical Activity Guidelines for Americans

Intensity of physical activitySlide 5

Intensity of Physical Activity

The essentials of fitnessSlide 6

The Essentials of Fitness

  • Components of fitness

    • Adaptations

  • Athletes

    • Muscle power

    • Agility

    • Reaction times

    • Fatigue

How do muscles gain in size and strengthSlide 7

How Do Muscles Gain in Size and Strength?

  • Activity choices

    • Overload

  • Balance of activity and rest

    • Work different muscle groups

    • Muscles need rest

      • Replenish and adapt

  • Specific training

  • Hormones and muscle growth

What are the benefits of resistance trainingSlide 8

What Are the Benefits of Resistance Training?

  • Progressive weight training

    • Prevent and manage chronic disease

  • Muscle strength & size, power, or endurance

    • Resistance and repetitions

    • Appearance

  • Mobility and bone loss

    • Slows loss of physical mobility

    • Maximize and maintain bone mass

How does cardiorespiratory training benefit the heartSlide 9

How Does Cardiorespiratory Training Benefit the Heart?

  • Enhances capacity

    • Heart, lungs, and blood

  • Enhances efficiency

    • Delivery of oxygen

      • VO2 max

    • Removal of wastes

  • Blood lipid profile

    • Heart disease risk

The active body s use of fuelsSlide 10

The Active Body’s Use of Fuels

  • Fuels

  • Mixtures

    • Vary

  • Excess postexercise oxygen consumption (EPOC)

    • High intensity activities

    • Cardiac output

  • Fuel usage

Delivery of oxygen by the heart and lungs to the musclesSlide 11

Delivery of Oxygen by the Heart and Lungs to the Muscles

Glucose use and storageSlide 12

Glucose Use and Storage

  • Muscle glucose

    • Retains glycogen for own use

  • Liver glucose

  • Glycogen and endurance

    • High-carbohydrate diets

The effect of diet on physical enduranceSlide 13

The Effect of Diet on Physical Endurance

Activity intensity glucose use and glycogen storesSlide 14

Activity Intensity, Glucose Use, and Glycogen Stores

  • Energy stored as glycogen

  • Anaerobic use of glucose

    • Quick energy

    • Muscle glycogen reserves

  • Aerobic use of glucose

    • Energy from glucose and fatty acids

  • Lactate

    • Anaerobic activity

    • Muscle size and strength

Glucose and fatty acids in their energy releasing pathways in muscle cellsSlide 15

Glucose and Fatty Acids in Their Energy-Releasing Pathways in Muscle Cells

Activity duration glucose use and glycogen storesSlide 16

Activity Duration, Glucose Use, and Glycogen Stores

  • Glucose use

    • Duration of activity

    • Intensity of activity

  • Blood glucose and activity

    • Dietary strategies

      • High carbohydrate diet daily

      • Consume glucose during activity

      • Consume carbohydrate shortly after exercise

Fat and physical activitySlide 17

Fat and Physical Activity

  • Body fat as fuel for activity

    • Sources of fat

    • Importance of strength training

  • Fat in the athlete’s diet

    • Performance

    • Omega-3 fatty acids

  • Intensity and duration

  • Degree of training

Protein for building muscles and for fuelSlide 18

Protein for Building Muscles and for Fuel

  • Muscle protein synthesis

    • Up to two days after activity

    • Intensity and pattern of muscle contraction

    • Muscle cells only build proteins as needed

  • Dietary protein

    • Supplements

    • High-quality proteins

  • Fuel for physical activity

    • Factors that regulate protein use

Nutrients of concernSlide 19

Nutrients of Concern

  • Vitamin E

    • Physical activity creates more free radicals

    • Benefits of vitamin E supplements

      • Studies are conflicting

    • Interference with absorption

  • Iron

    • Deficiency impairs performance

    • Groups at risk for deficiency

    • Sports anemia

Water losses during physical activitySlide 20

Water Losses During Physical Activity

  • Water losses

    • Breathing and sweating

  • Dehydration

  • Sweat and temperature regulation

  • Heat stroke

    • Potentially fatal

    • Reduce risk

  • Hypothermia

    • Symptoms

Fluid and electrolyte needs during physical activitySlide 21

Fluid and Electrolyte Needs During Physical Activity

  • Hydrate and rehydrate

  • Thirst signal

    • Hourly sweat rate

  • Water

    • Endurance athletes

  • Electrolyte losses and replacement

    • Minerals

    • Sports drinks vs. regular diet

Sodium depletion and water intoxicationSlide 22

Sodium Depletion and Water Intoxication

  • Replenishing electrolytes

    • Crucial time

    • Hyponatremia

      • Differs from dehydration

    • Heat cramps

      • Sodium

What do sports drinks have to offerSlide 23

What Do Sports Drinks Have to Offer?

  • Fluid

  • Glucose

  • Sodium and other electrolytes

  • Psychological edge

Ergogenic aidsSlide 24

Ergogenic Aids

  • Caffeine

    • Endurance vs. high-intensity activities

    • Adverse effects

    • Diuretic

  • Carnitine

    • Nonessential nutrient

  • Chromium picolinate

    • Carbohydrate and lipid metabolism

    • Safety concerns

Ergogenic aids1Slide 25

Ergogenic Aids

  • Creatine

    • Hypothesized benefits

    • Confirmed effect

      • Weight gain

  • Conjugated linoleic acid (CLA)

    • Not worth their price

  • Sodium bicarbonate

    • Unpleasant side effects

Ergogenic aids2Slide 26

Ergogenic Aids

  • Amino acid supplements

    • Maximum gains

      • Essential amino acids in system prior to physical work

    • Best source

      • Food

      • Reasons against supplements

Ergogenic aids3Slide 27

Ergogenic Aids

  • Whey protein and other protein supplements

    • By product of cheese making

    • Timing of protein intake

  • Complete meal replacers

    • Fall short of ‘complete’ nutrition

    • Risk of dental caries

    • Nutritional uses

      • Pregame meal

      • Between-meal snack

Hormone preparationsSlide 28

Hormone Preparations

  • Anabolic steroid hormones

    • Illegal and dangerous

  • Steroid alternative supplements

    • Herbal or insect sterols

  • Prohormones

    • Androstenedione

    • DHEA

  • Drugs posing as supplements

Physical risks of taking steroid hormone drugsSlide 29

Physical Risks of Taking Steroid Hormone Drugs


Copyright © 2014 SlideServe. All rights reserved | Powered By DigitalOfficePro