Effect of practising yoga on blood pressure
The materials required for this science fair project:
- 1 yoga instructor
- 1 television set
- 20 male participants between aged 35 to 45 years.
- Portable wrist blood pressure monitor
1. For this experiment, the independent variable is whether the participant is watching television or practising yoga. The dependent variable is the blood pressure of the tested individual. This is determined by using the portable wrist blood pressure monitor to measure his blood pressure. The constants (control variables) are the length of time for watching television or practising yoga, the age group of participants and gender of the participants.
2. The blood pressures of all the 20 participants are measured using the portable wrist blood pressure monitor. They are divided into 2 groups so that the average blood pressure of each group will be about the same.
3. The 1st group of 10 participants is made to watch television everyday for 2 hours. Immediately after the 2-hour viewing session is completed their blood pressure is checked using the portable wrist blood pressure monitor. Their average blood pressure reading is recorded in the table given below.
4. The 2nd group of 10 participants is led through a yoga session by the instructor. They are made to practise yoga everyday for 2 hours. The training session consists of some yoga exercises and breathing exercises for 1 hour followed by 1 hour of meditation. Immediately after the session their blood pressure is checked using the portable wrist blood pressure monitor. Their average blood pressure reading is recorded in the table given below.
5. Procedures 3 and 4 are repeated for the next 7 days and all their average blood pressures are recorded in the table below.