he Effect of Hot Weather on the Level of Blood PH – Lactic Acid and the Performance of Some Offensive Skills in Basketball among Students of the Faculty of Physical Education and Sport Sciences

الملخص

The aim of this study was to evaluate the effect of training in hot and dry (45°C) compared to cold and moderate climates (19°C) on the level of blood pH and lactic acid concentration, and the performance of some offensive skills (peaceful shooting, high patting, chest handling) in basketball players.

The researcher used the experimental method by designing the pre- and post-measurement for a sample of 30 students from the Faculty of Physical Education and Sport Sciences. The results showed that there were statistically significant differences between the pre- and post-measurements of all variables.

  In hot weather, the blood  pH  level decreased significantly while the concentration of lactic acid increased significantly and skill performance was negatively affected, as the accuracy of peaceful aiming decreased, and the performance time of both the high typing test and the pectoral pass increased.

These results are attributed to the increased reliance on the anaerobic system to produce energy under heat stress, resulting in the accumulation of hydrogen and lactic acid ions, causing a state of metabolic acid. This, in turn, negatively affects muscular function, neuromuscular coordination, and mental concentration, and the study reached several conclusions, including that the application of practical lessons in basketball in hot and dry climates leads to heat stress, especially without sufficient hydration, and thus the high level of lactic acid, as the researcher recommended important recommendations based on the results of the research, including working to provide air-conditioned or shaded indoor halls for practical lessons during peak times of heat.