Sports, Exercise & Health Science HL
18
Chapters
197
Notes
Chapter 1 - Musculoskeletal Anatomy
Chapter 2 - Cardio-Respiratory Exercise Physiology
Chapter 3 - Nutrition & Energy Systems
Chapter 4 - Movement Analysis
Chapter 5 - Skill In Sport
Chapter 6 - Measurement & evaluation of human performance
Chapter 7 - Training to optimize physiological performance
Chapter 8 - Environmental Factors & Performance
Chapter 9 - Non-Nutritional Ergogenic Aids
Chapter 10 - Individual Differences In Sport
Chapter 11 - Motivation In Sport & Exercise
Chapter 12 - Arousal, Anxiety & Performance
Chapter 13 - Psychological Skills Training
Chapter 14 - Overtraining, Stress & Burnout In Adolescent Athletes
Chapter 15 - Physical Activity & Health
Chapter 16 - Nutrition For Sport & Exercise
Chapter 17 - Internal Assessment & Practical Work
Chapter 18 - Perparing For Your Exams
Sports, Exercise & Health Science HL
Chapter 3 - Nutrition & Energy Systems
Unlock The Secrets Of Muscle Energy: How ATP Powers Your Workouts
601 words
4 mins read
Last edited onย 5th Nov 2024
Table of content
Muscle contraction & energy sources ๐
- Quick Fact! ๐ฅ: Your muscles get their initial burst of energy from creatine phosphate stores.
- For light to moderate exercise, energy comes from glucose:
- First, it's from anaerobic glycolysis (no oxygen needed! ๐ค).
- Then, our aerobic system takes over and turns stored glucose into energy.
- Fun Fact! ๐ก: Muscles gobble up more glucose from the blood during exercise. Think of it like a car guzzling gas when racing!
- But wait, there's more! Muscles and insulin play this cool tag team in getting glucose inside cells. During rest, insulin does the job. But during exercise, muscle contraction takes over since exercise actually lowers our insulin levels.
All about energy systems ๐
- Cells are like tiny power plants โก. They need energy to grow, function, and, for muscle cells, to contract.
- Meet the Mitochondria! ๐: Think of them as the “energy factories” of our cells. Except for red blood cells, every human cell has them.
- Role: They use oxygen and house some crucial energy-producing processes.
- Location: The electron transport chain proteins? Inside the inner membrane. Krebs cycle and fat oxidation enzymes? They're in the matrix.
- Peek Inside! Check Figure 3.11 for the structure of a mitochondrion.
The energy MVP ATP (adenosine triphosphate) ๐พ
- What happens inside cells? ๐งช: Catabolic reactions transform energy from organic molecules into ATP.
- ATP release = cell respiration ๐ฌ๏ธ.
- ATP molecule's got these strong bonds between three inorganic phosphate groups. Imagine these as tightly coiled springs, ready to burst with energy! ๐ฅ
- ATP: The bridge between energy we eat and energy we use.
- Eat food ๐ → Store as glycogen/fat → Transfer energy to ATP → Use energy in various body reactions ๐.
- Because of this super-important role, ATP is the cell's "energy currency". Cha-ching! ๐ต
Unlock the Full Content! 
Dive deeper and gain exclusive access to premium files of Sports, Exercise & Health Science HL. Subscribe now and get closer to that 45 ๐
Sports, Exercise & Health Science HL
Chapter 3 - Nutrition & Energy Systems
Unlock The Secrets Of Muscle Energy: How ATP Powers Your Workouts
601 words
4 mins read
Last edited onย 5th Nov 2024
Table of content
Muscle contraction & energy sources ๐
- Quick Fact! ๐ฅ: Your muscles get their initial burst of energy from creatine phosphate stores.
- For light to moderate exercise, energy comes from glucose:
- First, it's from anaerobic glycolysis (no oxygen needed! ๐ค).
- Then, our aerobic system takes over and turns stored glucose into energy.
- Fun Fact! ๐ก: Muscles gobble up more glucose from the blood during exercise. Think of it like a car guzzling gas when racing!
- But wait, there's more! Muscles and insulin play this cool tag team in getting glucose inside cells. During rest, insulin does the job. But during exercise, muscle contraction takes over since exercise actually lowers our insulin levels.
All about energy systems ๐
- Cells are like tiny power plants โก. They need energy to grow, function, and, for muscle cells, to contract.
- Meet the Mitochondria! ๐: Think of them as the “energy factories” of our cells. Except for red blood cells, every human cell has them.
- Role: They use oxygen and house some crucial energy-producing processes.
- Location: The electron transport chain proteins? Inside the inner membrane. Krebs cycle and fat oxidation enzymes? They're in the matrix.
- Peek Inside! Check Figure 3.11 for the structure of a mitochondrion.
The energy MVP ATP (adenosine triphosphate) ๐พ
- What happens inside cells? ๐งช: Catabolic reactions transform energy from organic molecules into ATP.
- ATP release = cell respiration ๐ฌ๏ธ.
- ATP molecule's got these strong bonds between three inorganic phosphate groups. Imagine these as tightly coiled springs, ready to burst with energy! ๐ฅ
- ATP: The bridge between energy we eat and energy we use.
- Eat food ๐ → Store as glycogen/fat → Transfer energy to ATP → Use energy in various body reactions ๐.
- Because of this super-important role, ATP is the cell's "energy currency". Cha-ching! ๐ต
Unlock the Full Content!
Dive deeper and gain exclusive access to premium files of Sports, Exercise & Health Science HL. Subscribe now and get closer to that 45 ๐