UNIVERSITAS AIRLANGGA



Detail Article

Folia Medica Indonesiana

ISSN 0303-7932

Vol. 50 / No. 1 / Published : 2014-01

Order : 11, and page :48 - 51

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Original Article :

Effect of coffee drinks to the reaction time of 18-22 years old male university students

Author :

  1. Gigih Aditya Wardana*1
  2. Irfiansyah Irwadi*2
  3. Harlina Soetjipto*3
  1. Mahasiswa Fakultas Kedokteran
  2. Dosen Fakultas Kedokteran
  3. Dosen Fakultas Kedokteran

Abstract :

The study is conducted to determine the effect of caffeine to the response changes as the effect of increased alertness and concentration measured byusing a reaction time test. Sampling method used was purposive random sampling. The sample consist of 27 people who were devided into 3 groups:control group with a drink of mineral water, a group of coffee drinks with 85 mg caffeine levels, and the provision of drinking coffee with 170 mgcaffeine levels. The reaction time test was measured 30 minutes and 1 hour after administration of drinks. The result obtained was analyzed usingANNOVA. Normality test result showed normal data distribution (p>0.05). Homogeneity of variance values for 30 minutes reaction time was nothomogenous (p = 0.032, p<) while the value of 1 hour reaction time is homogenous (p=0.392, p>). ANNOVA resulted to the value at 30 minutesreaction time among the three treatment groups (p=0.006, p<), with the value of differences in the post hoc results in the control group and 85 mgcaffeine levels (p=0.010, p<). As for 1 hour after treatment showed no significant difference average value of reaction time among the threetreatment groups (p=0.621, p>). The result shosw impairment of reaction time only in the group who consumes coffee after 30 minutes with 85 mgcaffeine levels, while for other groups not to be impaired the reaction time significantyl.(FMI 2014;50:48-51)

Keyword :

coffee drinks, caffeine, reaction time test, student,


References :

Daniels JW, Molé PA, Shaffrath JD, Stebbins CL,(1998) Effects of caffeine on blood pressure, heart rate, and forearm blood flow during dynamic leg exercise - : J Appl Physiol

Binns CW, Lee AH, Fraser ML,(2008) Tea or coffee? A case study on evidence for dietary advice - : Public Health Nutr





Archive Article

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Volume : 50 / No. : 1 / Pub. : 2014-01
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  10. Diagnostic Values Of Immature Granulocytes, Eosinopenia And I/t Ratio In Detection Of Early Onset Neonatal Sepsis In Neonates With Bacterial Infection Risk
  11. Effect Of Coffee Drinks To The Reaction Time Of 18-22 Years Old Male University Students
  12. Influence Of Weightlifting On The Emergence Of Partial And Full Thickness Rotator Cuff Tear Detected By Ultrasound Imaging
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