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# Humans as Organisms

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Introduction

Humans as Organisms Coursework * Trends and Patterns The trend of my graph is an upward trend starting with the first point at 93 beats (b)/min then after 30 seconds of exercise my pulse rate increased by 82 b/min to 175 b/min. It then increased again to 196 b/min, which is an increase of 21 b/min. After 90 seconds of exercise my pulse rate was 205 b/min and after 120 seconds it increased to 244 b/min which is an increase of 39 b/min. This suggests a positive correlation between exercise duration and pulse rate, where correlation indicates the extent to which two variables are related. * Analysis My graph shows that during exercise your pulse rate increases. ...read more.

Middle

in one lesson and as the collection was spread out over more than one lesson, the results may be less accurate as the circumstances of the person being tested may change, for example testing after lunch would achieve different results than at the beginning of the day. I endeavoured to overcome this problem by working faster collecting results in one lesson. I think that my results were not accurate because when we were getting our heart rate we only timed for 15 seconds then multiplied it by 4. This was not accurate, as gradually throughout the minute, your pulse rate is likely to decrease and this wasn't taken into account, so we are assuming when taking the results immediately after exercise, your pulse rate would have stayed as high throughout. ...read more.

Conclusion

This measures heart rate, which initially is more valuable than measuring pulse rate as well and provides a constant type of exercise (cycling) at a set intensity. Running around the science block cannot be controlled and intensity may have varied i.e. there may be sprinting for the first 100m (working anaerobically without oxygen) followed by a slow jog (recovering from the sprint) However I feel I had no anomalous results from the data I collected, and I feel I made no mistakes while gathering my results. In the future I could also investigate the effects of anaerobic respiration, shorter more intensive exercise on heart rate as well as looking at this experiment throughout longer periods of exercise time. I could observe the duration and intensity to achieve maximal output. ...read more.

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