The Influence of Menstrual Cycle Phases on Selected Physiological Variables and Mood State for Female in the Faculty of Physical Education at An- Najah National University

The aim of this study was to investigate the influence of different stages of the menstrual cycle on some physiological variables and the mood of female in the Faculty of Physical Education at the An-Najah National University. To achieve this objective, the study was conducted on a sample of (15) volunteer female from the Faculty of Physical Education at An- Najah National University. The study adopted a descriptive approach due to its relevance for the purposes of the study. The study measured the variables of (systolic blood pressure, diastolic blood pressure, body temperature, heart rate, RMR, body composition, VO2Max, anaerobic power, grip strength, and mood). data collected and processed by using the statistical packages of Social Sciences (SPSS): using the Repeated Measures test and Wilks Lambda. The results of the study revealed the following: - There were a significant differences at (0.05 = α) in resting heart rate and body temperature according to the different phases of the menstrual cycle in favor of the ovulation stage. - There were a significant differences at (0.05 = α) in resting metabolic rate (RMR) according to the different phases of the menstrual cycle in favor of the menstruation phase. - There were no significant differences at (0.05 = α) in the body composition according to the different phases of the menstrual cycle. -There were a significant differences at (0.05 = α) in the grip strength and anaerobic power according to the different phases of the menstrual cycle in favor of the follicular phase. - There were no significant differences at (0.05 = α) in the maximum oxygen consumption(VO2Max) according to the different phases of the menstrual cycle. -There were a significant differences at (0.05 = α) in tension , anger and depression according to the different phases of the menstrual cycle in favor of the stage of ovulation, and the confusion for the follicular phase. - There were no significant differences at (0.05 = α) in the the variables of fatigue and dynamic according to the different phases of the menstrual cycle. Based on the findings of the study the researcher recommended the following recommendations: - The coaches must taking into account the menstrual cycle in the process of sports training. - Taking into account the high heart rate in the stage of ovulation in determining the components of athletic training, as well as concern for the Sportswear light cotton during training and at this stage due to the high body temperature. Key words: Menstrual Cycle, Body Mass Index, Resting Metabolic Rate, Maximum Oxygen Consumption, Anaerobic Power, Mood.