Dear all
One of our students is interested to do research on effect of physical exercise on nutritional status and academic performance of sport sciences students. His subjects are university students studying for BSc in Sports sciences. He wanted to follow the students for two semesters. The aim is to see if the dietary intake of the students is inline with their physical activities and academic results... He proposed longitudinal study design but not sure how to calculate sample size. Please advise. Sincerely
Good afternoon!
It is important to understand how homogeneous the study group is and whether it will identify the links between the types of exercise and dietary characteristics.
If in the studied array it is possible to single out established groups, then it will be sufficient to have 20% in them, selected according to significant criteria. If the array is very diverse in characteristics, then all
Good afternoon!
It is important to understand how homogeneous the study group is and whether it will identify the links between the types of exercise and dietary characteristics.
If in the studied array it is possible to single out established groups, then it will be sufficient to have 20% in them, selected according to significant criteria. If the array is very diverse in characteristics, then all
Thanks for the comments
Dear Lada, the subjects of the study are under graduate students studying BSC in sports sciences. All are from same batch. We will consider if 20% is the best option
Thanks all for proposing further reading
Everything depends on the size of the population, accuracy
(confidence probability) and error (confidence interval). If you have 500 students, then you need to interview 217 people, and if 50,000, then 318 with 95% accuracy and 5% error.
Hello Follow site with suggestion
http://www.publicacoesdeturismo.com.br/calculoamostral/
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