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The study purpose. This study aims to evaluate the effect of the Tabata aquatic training method program in increasing the muscle power of beginner level athletes. Materials and methods. The researcher used a mixed method in this study. There were twenty swimming athletes (n = 20, age: 14.40 ± 1.18 years, height: 169.20 ± 3.18 cm, weight: 62.20 ± 2.26 kg) who agreed to participate in this study and were divided into two groups. The treatment group (n = 10) received the Tabata aquatic program and the control group (n = 10) swam every day without participating in any physical activity. The Tabata aquatic program was carried out for 9 weeks with a frequency of 3 times a week. After implementing the Tabata aquatic program, 10 athletes were interviewed. This study applied a quantitative research instrument, including squat jumps, and a qualitative research instrument, including individual in-depth interviews lasting for 30 minutes each. Analysis of quantitative data using IBM SPSS version 25.0 and qualitative data using thematic analysis was applied. Results. Quantitative study results showed that there was a significant increase in the squat jumps test (leg muscle power) in the treatment group and vice versa, there was no increase in the control group. However, in qualitative research results, most participants mentioned that the Tabata aquatic program is a fun training method and has a positive effect.  Conclusions. After carrying out the Tabata aquatic program for 9 weeks, we confirmed that this training method has a great impact on improving athletes’ leg muscle power in swimming.

Psychological elements, namely introverted and extroverted personalities, are currently one of the keys to determining success in academics at the University level, but it is not clear which type is more correlated with academic achievement. The purpose of this study is to investigate the correlation between introverted and extroverted personalities with student academic achievement. The subjects in this study come from the PJKR Department of the University of Suryakancana (N=20) and Halu Oleo (N=20). Data analysis uses SPSS version 25 to find descriptive statistics, normality, data linearity and person product moment correlation. The level of significance used is 0.05. The results of the study finds that introverted personality is significantly correlated with academic achievement in the high category (r= 0.749**), and extroverted personality is not significantly correlated with academic achievement (r= -0.120). Thus, it can be concluded that the personality of students with introverted type is far superior to extroverts in academic achievement at the University level. The contribution in this study contributes to knowledge in the field of physical education psychology, so that later lecturers can pay more attention and optimize academic achievement in students with both types, especially the extroverted type.

During the Covid-19 pandemic, pencak silat athletes experienced difficulty improving physical fitness because training could not be done together with a coach, so their physical fitness decreased significantly. This study aimed to test Tabata and Circuit's effectiveness to improve female Pencak silat athletes' physical fitness. This research was quantitative with experimental methods. The subject of this research consisted of Female Pencak silat athletes with low physical fitness levels (n=20). All subjects were randomly allocated to experiment I of the Tabata weight training (TWT) (n = 10) and experiment II of the Circuit weight training (CWT) (n = 10). The results showed that the physical training such as arm muscle strength (t= 11.00; P<0.05), leg muscle strength (t= 7.900; P<0.05), muscle endurance (t= 6.014; P<0.05), flexibility (t= 10.34; P<0.05), endurance VO2max (t= 17.39; P<0.05) and power (t= 19.20; P<0.05), increased significantly due to the intervention of Tabata weight training. A similar increase occurred in Circuit weight training, physical fitness components, such as arm muscle strength (t= 4.910; P<0.05), leg muscle strength (t= 12.230; P<0.05), muscle endurance (t= 4.792; P<0.05), flexibility (t= 6.107; P<0.05), endurance VO2max (t= 5.533; P<0.05) and power (t= 5.982; P<0.05) increased significantly. Home-based weight training between Tabata and Circuit positively improved the physical fitness of female Pencak silat athletes. This research contributes knowledge in coaching so that lecturers and coaches can use it to improve aspects of athlete's physical fitness.

The lack of information regarding exercise program assessment tools during the COVID-19 pandemic was the main gap in this research. The purpose of this study was to investigate lecturers' perceptions of computer-based and paper pencil-based performance to assess sports training programs during the COVID-19 pandemic. In this study, a combination of quantitative and qualitative (mixed) is used as a method. Participants in this study were male and female lecturers from Jakarta State University (N=15) and Sriwijaya University (N=10). Quantitative instruments use questionnaires and qualitative instruments use in-depth interviews with participants. Quantitative data analysis use the IBM SPSS version 25.0 to find descriptive data, namely mean, standard deviation and percentage of responses from participation. Meanwhile, qualitative data analysis use qualitative thematic data. The results of the study based on quantitative data found that the majority of lecturers strongly agreed to use computer-based instead of paper pencil-based to assess sports training programs. Meanwhile, research results based on qualitative data show that most lecturers favour computer-based over paper pencil-based during the COVID-19 pandemic. Thus, computer-based has better performance and advantages than paper pencil-based when used in the pandemic era. This research provides benefits for the development of science assessment tools in the field of sports.