Sports, Exercise & Health Science HL
Sports, Exercise & Health Science HL
18
Chapters
197
Notes
Chapter 1 - Musculoskeletal Anatomy
Chapter 1 - Musculoskeletal Anatomy
Chapter 2 - Cardio-Respiratory Exercise Physiology
Chapter 2 - Cardio-Respiratory Exercise Physiology
Chapter 3 - Nutrition & Energy Systems
Chapter 3 - Nutrition & Energy Systems
Chapter 4 - Movement Analysis
Chapter 4 - Movement Analysis
Chapter 5 - Skill In Sport
Chapter 5 - Skill In Sport
Chapter 6 - Measurement & evaluation of human performance
Chapter 6 - Measurement & evaluation of human performance
Chapter 7 - Training to optimize physiological performance
Chapter 7 - Training to optimize physiological performance
Chapter 8 - Environmental Factors & Performance
Chapter 8 - Environmental Factors & Performance
Chapter 9 - Non-Nutritional Ergogenic Aids
Chapter 9 - Non-Nutritional Ergogenic Aids
Chapter 10 - Individual Differences In Sport
Chapter 10 - Individual Differences In Sport
Chapter 11 - Motivation In Sport & Exercise
Chapter 11 - Motivation In Sport & Exercise
Chapter 12 - Arousal, Anxiety & Performance
Chapter 12 - Arousal, Anxiety & Performance
Chapter 13 - Psychological Skills Training
Chapter 13 - Psychological Skills Training
Chapter 14 - Overtraining, Stress & Burnout In Adolescent Athletes
Chapter 14 - Overtraining, Stress & Burnout In Adolescent Athletes
Chapter 15 - Physical Activity & Health
Chapter 15 - Physical Activity & Health
Chapter 16 - Nutrition For Sport & Exercise
Chapter 16 - Nutrition For Sport & Exercise
Chapter 17 - Internal Assessment & Practical Work
Chapter 17 - Internal Assessment & Practical Work
Chapter 18 - Perparing For Your Exams
Chapter 18 - Perparing For Your Exams
IB Resources
Chapter 8 - Environmental Factors & Performance
Sports, Exercise & Health Science HL
Sports, Exercise & Health Science HL

Chapter 8 - Environmental Factors & Performance

Unveiling The Dangers And Solutions Of Cold Water Immersion: A Must-Read Guide

Word Count Emoji
697 words
Reading Time Emoji
4 mins read
Updated at Emoji
Last edited onย 5th Nov 2024

Table of content

Cold water immersion the "chill" factors ๐ŸŒŠ

  • Initial responses when diving into cold water

    • Tachycardia: A super-fast heartbeat! (over 100 bpm ๐ŸŽถ). Think of it as your heart playing a rapid drum solo!
    • Inspiratory Gasp: A reflexive, big gasp for air as soon as you hit the cold. Like the surprise gasp in horror movies! ๐ŸŽฅ๐Ÿ‘ป
    • Hyperventilation: Breathing like you just ran a marathon, even if you didn’t. For context, imagine normally breathing 12 times a minute but suddenly skyrocketing to over 30 times!
  • **What's triggering this cold shock?**๐Ÿค”

    • Mainly, the rapid decrease in skin temperature. Think of your skin screaming, "OMG, it's freezing!"โ„๏ธ
  • **What happens when you swim in icy waters?**๐ŸŠ‍โ™‚๏ธโ„๏ธ

    • Blood migration: Blood decides to retreat to the core of the body, like everyone huddling in the center of a room during a snowstorm.
    • Peripheral vasoconstriction: Fancy term! It means the blood vessels in the limbs narrow down. Imagine a highway getting squeezed into a one-lane road.
    • Reduced muscle blood flow: Less blood for your arms and legs. They might feel like they're on a blood diet.
    • Skeletal muscle reflex: Muscles contract suddenly, causing coordination issues. Like when you try to catch a ball but flinch instead because it’s thrown too fast.

Clothing in cold conditions bundle up ๐Ÿงค

  • Why wear special clothing in cold?

    • To act as your personal shield against the cold! It insulates and keeps your body heat from fleeing.
  • Introducing the 'clo'

    • The clo unit is our measurement buddy to determine how well clothing insulates us.
    • Real-World Example: 1 clo means a person chilling (literally) without doing anything can stay cozy at 21°C (68.8°F) with 50% humidity.
  • Factors affecting the clo unit

    • Ambient temperature: As it gets colder outside, you need more clo units.
    • Metabolic rate: The more active you are, the fewer clo units you need. Think of a resting person needing more blankets compared to someone doing jumping jacks.
  • Clothing's role in controlling body temperature

    • In hot & humid places: Sweat might get trapped in clothes. Just like when you spill a drink, and your shirt soaks it up. This reduces the body's ability to cool down.
    • In cold weather: Wet clothing loses its warmth shield. Wet wool isn't as warm as dry wool.
    • Exercise challenge in cold: Your exercise might produce too much heat! Ever seen a cross-country skier strip off layers mid-race? That's because as they warm up, they shed layers to balance their temperature.
  • Golden Rule for Winter Clothes: Choose clothes that keep you warm but let sweat escape. Like a house that keeps heat in but lets smoke out of the chimney.

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IB Resources
Chapter 8 - Environmental Factors & Performance
Sports, Exercise & Health Science HL
Sports, Exercise & Health Science HL

Chapter 8 - Environmental Factors & Performance

Unveiling The Dangers And Solutions Of Cold Water Immersion: A Must-Read Guide

Word Count Emoji
697 words
Reading Time Emoji
4 mins read
Updated at Emoji
Last edited onย 5th Nov 2024

Table of content

Cold water immersion the "chill" factors ๐ŸŒŠ

  • Initial responses when diving into cold water

    • Tachycardia: A super-fast heartbeat! (over 100 bpm ๐ŸŽถ). Think of it as your heart playing a rapid drum solo!
    • Inspiratory Gasp: A reflexive, big gasp for air as soon as you hit the cold. Like the surprise gasp in horror movies! ๐ŸŽฅ๐Ÿ‘ป
    • Hyperventilation: Breathing like you just ran a marathon, even if you didn’t. For context, imagine normally breathing 12 times a minute but suddenly skyrocketing to over 30 times!
  • **What's triggering this cold shock?**๐Ÿค”

    • Mainly, the rapid decrease in skin temperature. Think of your skin screaming, "OMG, it's freezing!"โ„๏ธ
  • **What happens when you swim in icy waters?**๐ŸŠ‍โ™‚๏ธโ„๏ธ

    • Blood migration: Blood decides to retreat to the core of the body, like everyone huddling in the center of a room during a snowstorm.
    • Peripheral vasoconstriction: Fancy term! It means the blood vessels in the limbs narrow down. Imagine a highway getting squeezed into a one-lane road.
    • Reduced muscle blood flow: Less blood for your arms and legs. They might feel like they're on a blood diet.
    • Skeletal muscle reflex: Muscles contract suddenly, causing coordination issues. Like when you try to catch a ball but flinch instead because it’s thrown too fast.

Clothing in cold conditions bundle up ๐Ÿงค

  • Why wear special clothing in cold?

    • To act as your personal shield against the cold! It insulates and keeps your body heat from fleeing.
  • Introducing the 'clo'

    • The clo unit is our measurement buddy to determine how well clothing insulates us.
    • Real-World Example: 1 clo means a person chilling (literally) without doing anything can stay cozy at 21°C (68.8°F) with 50% humidity.
  • Factors affecting the clo unit

    • Ambient temperature: As it gets colder outside, you need more clo units.
    • Metabolic rate: The more active you are, the fewer clo units you need. Think of a resting person needing more blankets compared to someone doing jumping jacks.
  • Clothing's role in controlling body temperature

    • In hot & humid places: Sweat might get trapped in clothes. Just like when you spill a drink, and your shirt soaks it up. This reduces the body's ability to cool down.
    • In cold weather: Wet clothing loses its warmth shield. Wet wool isn't as warm as dry wool.
    • Exercise challenge in cold: Your exercise might produce too much heat! Ever seen a cross-country skier strip off layers mid-race? That's because as they warm up, they shed layers to balance their temperature.
  • Golden Rule for Winter Clothes: Choose clothes that keep you warm but let sweat escape. Like a house that keeps heat in but lets smoke out of the chimney.

Unlock the Full Content! File Is Locked Emoji

Dive deeper and gain exclusive access to premium files of Sports, Exercise & Health Science HL. Subscribe now and get closer to that 45 ๐ŸŒŸ