The effect of continuous running on body hydration levels: A comparison between treadmill and outdoor environments

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Dehydration, Performance, Treadmill


The literature indicates a negative impact of changes in body hydration levels, particularly on aerobic performance in athletes. The objective of this study is to determine the effect of completing an 8 km run in an outdoor setting and on a treadmill on body hydration levels. Fifteen female volunteer volleyball players with a minimum of 3 years of volleyball training experience participated in the study. However, only 10 individuals completed the study according to all study protocols. Body composition analysis was conducted before and after the runs in both environments. Additionally, specific gravity measurements of urine were taken to determine body hydration levels. Furthermore, completion times, minimum-maximum, and average heart rates of the runs were recorded. The statistical analyses revealed statistically significant differences in body hydration level changes before and after the run in both protocols (p<0.05). Comparison of hydration levels between run protocols also showed significant differences (p<0.05). No significant differences were found in minimum, maximum, and average heart rates between the two run protocols (p>0.05). However, significant differences were observed in completion times between the run protocols (p<0.05). In conclusion, it is evident that treadmill running has a higher impact on body weight and body hydration changes.


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How to Cite

Demirkan, E., Yilmaz, B., & Tosun, M. İsmail. (2024). The effect of continuous running on body hydration levels: A comparison between treadmill and outdoor environments. Journal of ROL Sport Sciences, 5(1), 20–29.