39th Joint School Science Exhibition Competition

Science Unlimited, Health Potentiated

Group 26Shatin Tsung Tsin Secondary School

Project Holders: (Tony) Leung Chun Yam (Chloe) Lai Ka Ni (Kim) Lam Chun Kong (Charles) Tang Chi Hung

Better Sleep, Better Health

• Better sleep leads to better health because during sleep…

- lower metabolic rate- lower heart beat rate- muscle relaxation- repair of damaged cells- less susceptible to diseases

Better Sleep, Better Health

BUT,

• Hong Kong citizens commonly suffer from– Insomnia

– sleep apnea syndrome

Objective

To improve the quality of sleeping by:

•Increase the chance of falling asleep

•Reduce the frequency of awakening during sleeping

Insomnia

• Cause

1.Stress

2. Disturbance from surrounding :

noise

1. U-shape pillow

1. U-shape pillow

Features of the pillow

1. U-shape

2. Sound-proof material- reduce the

disturbance to sleep

Features of the pillow

3. Music player a. theory of music therapy

b. increase the ease of falling asleep

Features of the pillow

4. Vibrator a. promote transmission of sound

b. does not disturbthe others

Transmitting sounds through air and skull bones

Advantages of the pillow

•Reduce disturbance from falling asleep

•Help relax and reduce stress by playing music

•Promote transmission of sound when playing music

Sleep Apnea Syndrome (SAS)

• Obstructive Sleep Apnea Syndrome

• Cause:

Collapsing of soft tissue in the rear of throat during sleeping

Picture from http://www.cemmahk.com.hk

2.Balloon Jacket

Features of the balloon jacket

1. Air pump- controlled by a sound

sensor for detecting sound intensity of snoring

Features of the balloon jacket

2. Air bag a. its inflation (gradually) turns the user to the position of side-sleep b. relieve the syndrome

of sleep apnea

Diagrams illustrating how the air bags work

Advantages of the jacket

•Reduce the disturbance caused by the air tube connected to the air pump•Provide more ‘natural’ ventilation•Allow different sleeping postures•Suit all ages

3. Demonstrations in exhibitiona. Music Therapy

- Comparing the heart beat rate of an audience during normal activity and listening to music with different tempos.

-listen to music with…

slow tempo →heart beat rate decreases

fast tempo → heart beat rate increases

3. Demonstrations in exhibitionb. Pillow of different materials

- Let audiences compare pillows which are made of different materials e.g. Memory foam, cotton etc.

- Explaining the difference between them and why we chose the material to made the pillow

3. Demonstrations in exhibitionc. Transmission of sound by skull bone

- The following device is to demonstrate the idea:

3. Demonstrations in exhibitiond. Inflation of the air bags

-A small scale model is used in order to demonstrate the method of using the inflation of the air bags to adjust the sleeper in side-sleep position.

-The End-