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Articles
Published: 2013-03-30

Diurnal Rhythms in Selected Physical Variables before and During Ramadan Fasting

Assistant Professor, Department of Physical Education and Sports Sciences, Annamalai University, Chidambaram, Tamilnadu, India
Ramadan fasting speed speed endurance agility and power

Abstract

The purpose of the present study was to assess diurnal variations in selected physical variables before and during Ramadan fasting. The physical variables (speed, speed endurance, agility and power) were documented around the clock at five 4-hourly intervals before Ramadan began and on the twenty-third day of Ramadan (daytime fasting). Ten healthy nonsmoking male handball players volunteers were included in the study after routine clinical and laboratory examinations. These subjects were selected from Department of Physical Education and Sports Sciences, Annamalai University. Their ages averaged 27 ± 1.9 years. Time series were analysed with repeated measures ANOVA which revealed that there was a statistically significant changes as a result of Ramadan fasting among experimental days and times on speed, speed endurance, agility and power. Experimental day and time interaction showed that during Ramadan, compared with control period, time related variations of speed, speed endurance, agility and power changed significantly. To evaluate rhythmicity, the single cosinor method was used. Cosinor analysis clearly shows the shift in acrophase obtained from the subjects before to the 23rd day of Ramadan fasting. Ramadan induces day time changes in speed, speed endurance, agility and power.

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References

  1. T. Reilly, G. Atkinson, J. Waterhouse, Biological rhythms and exercise, Oxford, Oxford University Press (1997).
  2. P.N. Ainslie, I.T. Campbell, K.N. Frayn, S.M. Humphreys, D.P. MacLaren, T. Reilly, K.R. Westerterp, Energy balance, metabolism, hydration and performance during strenuous hill walking: the effect of age, Journal of Applied Physiology, 93 (2002) 714–23.
  3. M. Apfelbaum, A. Reinberg, P. Nillus, F. Halberg, Rythmes circadiens de l‘alternance veille-sommeil pendant l‘isolement de sept jeunes femmes, La Presse Médicale, 77 (1969) 879–82.
  4. M.J. Zigmond, W.J. Shoemaker, F. Larin, R.J. Wurtman, Hepatic tyrosine transaminase rhythm: interaction of environmental lighting, food consumption and dietary protein content, Journal of Nutrition 98 (1969) 71–75.
  5. A. Reinberg Chronobiologie et Chronothérapeutique; Heure Optimale d‘Administration des Médicaments. Paris: Flammarion Médecine-Sciences, (1991).
  6. F. Halberg, Protection by timing treatment according to bodily rhythms, An analogy to protection by scrubbing before surgery, Chronobiologia, (1974) (1) [Suppl. 1] 27–72. on gastric pH, Journal of Clinical Endocrinology and Metabolism, 82 (1997) 1261–1273.
  7. Y. Touitou, E. Haus, Biologic Rhythms in Clinical and Laboratory Medicine, Berlin, New York, London, Paris, Tokyo, Hong Kong, Barcelona, Springer Verlag, 1994.
  8. L. Iraki, A. Bogdan, F. Hakkou, A. Abkari, Y. Touitou, Ramadan diet restrictions modify the circadian time structure in humans. A study on plasma gastrin, insulin, glucose and calcium and
  9. A. Bogdan, B. Bouchareb, Y. Touitou, Ramadan fasting alters endocrine and neuroendocrine circadian patterns. Meal–time as a synchronizer in humans?, Life Sciences, 68 (2001) 1607–1615.
  10. G. Atkinson, B. Drust, T. Reilly, J. Waterhouse, The relevance of melatonin to sports medicine and science, Sports Medicine, 33 (2003) 809–831.
  11. W. Nelson, L.E. Scheving, F. Halberg, Circadian rhythms in mice fed a single daily meal and different stages of lighting regimen, Journal of Nutrition, 105 (1975) 171–184.
  12. W. Nelson, L.Y. Tong, J.K. Lee, F. Halberg, Methods of cosinor rhythmometry, Chronobiologia, 6 (1979) 305-323.
  13. G. Atkinson, T. Reilly, Circadian variation in athletic performance, Sports Medicine, 21 (1996)292–312.
  14. B.J. Edwards, W. Edwards, J. Waterhouse, G. Atkinson, T. Reilly, Can cycling performance in an early morning, laboratory- based cycle time-trial be improved by morning exercise the day before?, International Journal of Sports Medicine, 26 (2005) 651–66.
  15. R. Roky, I. Houti, S. Moussamih, S. Qotbi, N. Aadil, Physiological and chronobiological changes during Ramadan intermittent fasting, Annals of Nutrition and Metabolism, 48 (2004) 296–303.
  16. N. Kadri, A. Tilane, M. El-Betal, Y. Taltit, S.M. Tahiri, D. Moussaoui, Irritability during the month of Ramadan, Psychosomatic Medicine, 62 (2000) 280–285.
  17. S. Ennigrou, M. Zenaidi, F. Ben Slama, B. Zouari, T. Nacef, Ramadan and customs of life: investigation with 84 adult residents in the district of Tunis, La Tunisie Medicale, 79 (2001) 508–514.
  18. D. Kirkendall, Y. Zerguini, H. Dembri, A. Junge, J. Dvorak, Impact of Ramadan on biochemical and performance indices in professional soccer players, Medicine & Science in Sports & Exercise, 38 (2006) S240.

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How to Cite

B, C. (2013). Diurnal Rhythms in Selected Physical Variables before and During Ramadan Fasting. International Journal of Physical Education, Fitness and Sports, 2(1), 25-29. https://doi.org/10.26524/1315

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