4.6 healthy movement

• Biologie
• Middelbare school
• vmbo k, g, t
• Leerjaar 1

start task: 4.6 healthy movement

Copy the learning objectives.

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Learning objectives: After this lesson:

- you know that muscles become stronger through movement and exercise.

- you can explain that physical activity is good for your health.

What are we going to do today?

Review 4.4 Muscles

New theory: 4.5 Healthy exercise

Finish Skeletons!

When you contract a muscle, the muscle becomes...

1. shorter and thicker
2. longer and thinner
3. shorter and thinner
4. longer and thicker

When you relax a muscle, the muscle becomes...

1. shorter and thicker
2. longer and thinner
3. shorter and thinner
4. longer and thicker

Goosebumps are caused by muscles. What is true about these muscles?

1. The muscles are attached to bones.
2. The muscles are located in the skin.
3. these muscles work voluntarily (you can actively contract them)

A skeletal muscle always has a muscle that works in the opposite way.

1. true
2. false

What are antagonists?

1. Muscles in your intestines
2. Muscles with a common function
3. Muscles with an opposite function

If muscle 2 becomes shorter, muscle 4 becomes...

1. shorter
2. longer

What are triceps and biceps?

1. triceps: arm stretching muscle biceps: arm bending muscle
2. triceps: arm bending muscle biceps: arm stretching muscle

Learning objectives today

At the end of the lesson:

• You know that muscles become stronger through movement and sports.
• You can explain that physical activity is good for your health.

Introduction

• Exercise is healthy
• You get good fitness
• Movement helps to prevent complaints
• You learn to move well when you are young

4.6 healthy movement

Unused muscles become 

thinner and weaker.

Muscles that you use a lot become 

bigger and stronger.

4.6 healthy movement

Physical exercise:

• provides relaxation, 
• improves fitness, 
• and enhances coordination.

4.6 healthy movement

Trained muscles:

• less muscle pains
• better performance (speed, accuracy)
• less chance of injuries (= blessures, schade aan bot, spier of gewrichten)

4.6 healthy movement

Preventing injuries:

• stretching exercises
• proper warm-up
• cooling-down

4.6 healthy movement

Muscles are strong, but their strength decreases if you don’t use them. Unused muscles become thinner and weaker.

When you exercise and play sports, the opposite happens. If you use your muscles often, they become thicker. They can then apply more strength.

4.6 healthy movement

Physical activity is not only good for the muscles, but it also provides relaxation. That is why many people play sports.

Regular exercise is good for fitness but also improves coordination.

By practicing movements, you can improve the speed and accuracy of your muscles.

4.6 healthy movement

If you start exercising while untrained, you may get muscle pain. Muscle pain often occurs after a movement you are not used to. By training more oftent, the chance of muscle pain decreases.

Trained muscles deliver better performance. With trained muscles, you are also less likely to get an injury (blessure). An injury is a damage to a muscle, bone, or joint.

4.6 healthy movement

You can prevent injuries by doing stretching exercises and a proper warm-up and cool-down when you exercise.

4.6 healthy movement

If you use a phone or play a game for a long time, you may get pain. This pain is usually in your shoulder, arm, or neck. You may also get a headache.

The pain happens because you repeat the same movement over and over. The muscles in your arm and shoulder stay tense while you hardly move (this is called RSI).

questions?

Terms from this lesson

fitness (conditie)

coordination

muscle pain 

injury (blessure)

physical activity (lichaamsbeweging)

health

strength

(un)trained

damage

A heart is a muscle, and that’s why you can train your heart.

1. true
2. false

Bodybuilding

Someone starts bodybuilding. If you compare their muscles after a few weeks with their muscles at the start of training, what do you see?

1. The muscles are stronger and thicker.
2. The tendons are longer and thicker, and the muscles are stronger and thicker.
3. The tendons are thicker.
4. The tendons are thinner and weaker, and the muscles are stronger and thicker.

By moving enough

1. Motor development decreases.
2. Coordination improves.
3. Fewer muscles are controlled properly at the same time.
4. Muscles become less accurate in movement.

Work

Now work:

What: Finish skeleton!

Homework:

What: Complete exercises 1 to 4 (hand-out!).

How: Use text + images from pages 45-47.

Done: Check answers via Google Classroom.