rates increase and Design and carry out an Plan an investigation the breathing and Timer, pulse sensor breath volume investigation about the effects of exercise on the body. temperature. and spirometer if increases to supply effects of exercise on the available. Interpret line graphs and Investigate effect of oxygen to muscle body. Muscle strength spirometer tracings to compare muscle fatigue on muscle cells faster. meters. Present and interpret data rate of breathing before, during strength and produce an Muscle cells can heart rate, breathing rate and after exercise. article for a fitness Timers and masses. respire and breath volume. magazine. Use spirometer tracings to AQA resources: anaerobically if Interpret data relating to the calculate breathing rate and Investigate how long it there is insufficient effects of exercise on the depth of breathing. takes muscles to fatigue oxygen. This body, eg spirometer tracings. repetitive actions, eg – Interpret data on heart rate, produces lactic acid step ups or holding Describe the effects of long temperature and depth of and creates an masses at arm’s length. periods of vigorous exercise breathing during exercise. oxygen debt. on the body. Interpret spirometer Interpret data to compare how Lactic acid can traces. Define the term fit different people are. cause muscle ‘oxygen debt’. Calculate breathing rate fatigue. The cells Discuss causes and effects of and of breathing. stop contracting Explain what happens to muscle fatigue and relate these efficiently. lactic acid once exercise to lactic acid build up. Interpret data and draw stops. conclusions. When exercise Watch a video showing stops, the oxygen sprinters and discuss how the debt must be repaid body reacts at the end of the by continuing to race paying back the oxygen – breathe deeply. debt. Blood transports YouTube has a variety of lactic acid to the videos of marathon runners liver where it is struggling over the finish line – converted back into glucose.
rates increase and breath volume increases to supply oxygen to muscle cells faster. Muscle cells can respire anaerobically if there is insufficient oxygen. This produces lactic acid and creates an oxygen debt. Lactic acid can cause muscle fatigue. The cells stop contracting efficiently. When exercise stops, the oxygen debt must be repaid by continuing to breathe deeply. Blood transports lactic acid to the liver where it is converted back into glucose. Design and carry out an investigation about the effects of exercise on the body. Present and interpret data heart rate, breathing rate and breath volume. Interpret data relating to the effects of exercise on the body, eg spirometer tracings. Describe the effects of long periods of vigorous exercise on the body. Define the term ‘oxygen debt’. Explain what happens to lactic acid once exercise stops. Plan an investigation the effects of exercise on the body. Interpret line graphs and spirometer tracings to compare rate of breathing before, during and after exercise. Use spirometer tracings to calculate breathing rate and depth of breathing. Interpret data on heart rate, temperature and depth of breathing during exercise. Interpret data to compare how fit different people are. Discuss causes and effects of muscle fatigue and relate these to lactic acid build up. Watch a video showing sprinters and discuss how the body reacts at the end of the race – paying back the oxygen debt. YouTube has a variety of videos of marathon runners struggling over the finish line – breathing and temperature. Investigate effect of muscle fatigue on muscle strength and produce an article for a fitness magazine. Investigate how long it takes muscles to fatigue – repetitive actions, eg step ups or holding masses at arm’s length. Interpret spirometer traces. Calculate breathing rate and of breathing. Interpret data and draw conclusions. Timer, pulse sensor and spirometer if available. Muscle strength meters. Timers and masses. AQA resources: