IGCSE Physical Education Paper-1: Specimen Questions with Answers 139 - 141 of 256

Question number: 139

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Describe long-term effects of exercise on the respiratory system.

Explanation

(1) Increased strength of respiratory muscles: - The diaphragm and intercostal muscles increases in strength. This allows for greater expansion of thoracic cavity. More expansion provides more efficient inhalation and exhalation.

(2) Increased vital capacity: - Vital capacity increases because of greater expansion of thoracic cavity.

(3) Increased oxygen diffused rate: - increase in number and size of capillaries leads to more efficient diffusion. Regular training leads to better transportation of O2/CO2 therefore an increase in oxygen diffusion rate.

Question number: 140

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Describe one characteristic of skillful performer.

Explanation

Skilled performers demonstrate greater consistency resulting in fewer errors during a performance. An unskilled athlete may occasionally ‘fluke’ a good performance whereas a skilled athlete can perform well over and over.

Question number: 141

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Explain feature of resistance training.

Explanation

Its key feature is that to build strength, anaerobic endurance and size of skeletal muscles.

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