Impacts of Aerobics and Cheerleading on High School Students

Balneo and PRM Research Journal

Murariu

2023

Background: Explosive strength or muscle power plays a decisive role in the motor performance of all athletes. Purpose: Analysis of muscle strength variations for female students of the Faculty of Physical Education and Sport/undergraduate level, according to sports specializations. Mate-rial and method: The study included 77 women (age = 20.48 ± 1.37 years, weight = 58.79 ± 8.92 kg, height = 166.24 ± 7.13 cm), divided into 3 evaluation subgroups (Non-athletes/NA = 40 cases, Team sports games/TSG = 17 cases and IS/Individual sports = 20 cases). Explosive strength rating was based on 7 lower body tests and 6 upper body tests. Manova parametric techniques were applied. Results: The analysis of variance indicates significant differences between the 3 defined groups, the F values correspond to thresholds p <0.05. Pairwise analysis highlights the statistical superiority of TSG and IS groups compared to NA. We noted better values of the TSG group of women in all upper body strength assessment tests, but these differences are not significant (p>0.05). Top performance values are dominated by sprinters and volleyball players for the low-er body, respectively by handball, volleyball and karate players for the upper body, as-pects confirmed by the studied sources. Conclusion: We did not identify significant differences be-tween the groups of athletes (TSG and IS), and the top values according to sports specialization reinforce the results of other similar studies, the specific effort obviously infusing the perfor-mance in the muscle strength tests. Keywords: specific effort, muscle power, rapid contractions, adaptation, university students

The influence of the specificity of sports specializations on the values of muscle power for female university students

Balneo and PRM Research Journal

Murariu

2023

The influence of the specificity of sports specializations on the values of muscle power for female university students

Balneo and PRM Research Journal

Murariu

2023

Body composition analysis for non-athlete urban schoolgirls in the pubertal stage

Postelnicu

Adam

et al. 2023

ppcs

Background and Study Purpose. Body composition analysis by bioimpedance is a modern investigation method that provides additional and relevant information, compared to the classical assessment, based only on BMI levels. The purpose of the research is to compare body composition parameters for secondary school girls, according to the stages of puberty and to identify the differences that appear between these stages. Material and Methods. The investigated group was made up of 115 non-athlete girls from the urban environment, divided into two distinct age categories: 10-12 years/55 cases (Under 12 with age=10.97±0.40, BMI=19.53±3.71, percentiles BMI=65.52± 25.78) and 12-13 years/end of puberty/60 cases (Over 12 with age=12.30±0.30 BMI=20.72±3.62, BMI percentiles=66.13±28.23). The assessment carried out with Inbody 720/Biospace (Korea). Results. Reporting to the percentile ranges indicates the absence of Underweight cases for the Over 12 group and only 7.27% of the Under 12 group falls within these values. In both groups, the Normal Weight class dominates (67.27% for Under 12 and 63.34% for Over 12), and the percentages of Overweight and Obese cases are higher for Over 12 (23.33% and 13.33%, respectively). The distribution according to body composition indicates the slim type for about a quarter of the students of both groups, but also the placement of a large number of subjects in the Chubby/normal type category (29.10% for Under 12 and 20% for Over 12). According to the percentage of mass fat, the Over 12 group has a double percentage of Obesity for high level, compared to Under 12 group (23.33% vs. 10.90%). The Over 12 group has statistically higher values (P<0.05) for body fat mass (BFM), Skeletal lean mass (SLM), fat free mass (FFM), total body water (TBW), Skeletal Muscle Mass (SMM) and has a much higher number of cases reporting abdominal obesity/ waist-to-hip ratio (WHR) (33.34% vs. 14.55%). Conclusions. The analysis of body composition by bioimpedance allowed the precise identification of the ratio between the main components of the body, clearly highlighting the cases with problems related to the very high percentage of fat mass. In this sense, for many girls who fell according to the BMI percentiles in the Normal Weight category, the low percentage of muscle tissue and the excessive amounts of fat generated the reclassification in the Chubby/normal type or Obese/excessive fat type categories. The results confirm the increase in percentages of overweight and obese children for the last stage of puberty.