This study aims to determine the kinematics of the men's 50 and 100 meter freestyle swimming athletes. Research method uses quantitative descriptive with 50 meter swimmers and 100 meter freestyle men at the 2019 IOAC championship. Instrument used was a Sony Rx-10Mark IV camera placed in the highest stands at a distance of 25 m in a 50-meter pool. Video results analyzed using the Kinovea 0.8.27 software by calculating the SF,SV,SR, and SL. The results showed that the average number of a 50meter had an SF of 13.06,SV of 1.89 m.s-1,SR of 59.08 cycles.min-1, and SL of 1.92 m.cycle-1. The 100 meter number, the average SF value is 11.8 at a distance of 50-meter and 12.08 at 100 meter. In comparison, the SV average is 1.73 m.s-1 at a distance of 50 and 1.72 m.s-1 at a distance of 100-meter. SR the average is 46.35 cycles.min-1 distance of 50 meter and 50, 2 100 m distance. SL the average is 2.25 m.cycle-1 distance of 50-meter and 2.08 distance of 100-meter. Conclusion, are differences in kinematics of swimming between the men's 50 meter and 100 meter freestyle in SV and SR,while those in SF and SL tend to be the same.

Covid-19 pandemic had an effect on students tegarding changes in sedentary lifestyle during studying at home, coupled with advances in technology which has caused student to prefer games that less phsycal activity, this is feared to still be a habit for students, after covid-19 pandemic. Studying at school that has been proclaimed by  Surabaya government, causing a decrease an increased risk of obesity in student. Therefore this study aims to provide an overview the physical activity level and nutritional status of elementary school in Surabaya. this study were examining nutritional status through Body Mass Index and physical activity level using (IPAQ) for student in three elementary schools in Surabaya. the average nutritional status of student based on BMI/age is 19,5±4,02,  1,02% severely thinnes, 21,94% thinnes 56,63% normal, 16,83% overweight and 3,57% obese, the average level of physical activity is 1037±851 MET-min/week, 46,42% low, 40,81% moderate, 12,75% high. This shows that elementary school student in Surabaya have good nutritional status but have a level activity that tends to be less.

Penelitian ini bertujuan untuk mengetahui kadar glukosa darah. ketika diberikan minuman air kelapa campur gula aren dibandingkan dengan minuman isotonik. Subjek dalam penelitian ini adalah pemain bola basket universitas berjumlah 10 orang, penelitian menggunakan uji klinis dengan desain penelitian single blind crossover. Parameter yang diukur adalah kadar glukosa darah. Hasil penelitian diperoleh kadar glukosa saat akhir kuarter kedua, kelompok percobaan tidak berbeda signifikan dengan kelompok isotonik maupun kelompok kontrol, namun kelompok kontrol berbeda signifikan (p< 0,05) dengan kelompok isotonik. 30 menit setelah pertandingan kelompok percobaan memiliki kadar glukosa paling tinggi (151,6 ±20,89) dan tidak berbeda signifikan dengan kelompok isotonik (144±32,79), kelompok percobaan berbeda signifikan (p < 0,001) dengan kelompok kontrol (111,7 ±19,03). Kesimpulan Minuman air kelapa campur gula aren mampu menjaga kadar glukosa darah saat dan setelah pertandingan dan dapat menjadi solusi pengganti minuman isotonik dari bahan alam yang relativ aman.

To assess and describe the vital capacity (VC), forced vital capacity (FVC), forced expiratory volume in one second (FEV1), and the ratio of FEV1/FVC measurements in smoking male physical education students, ranged between 18 -22 years. Also compare the FEV1 and ratio of FEV1/FVC between active and passive smoker. A cross-sectional study was applied on male physical education students (n=30) who undergo training for 2 months and between the age range of 18-22 years old. The lung VC, FVC, FEV1, and ratio of FEV1/FVC were measured and compared between active and passive smokers. Thirty male physical education students participated in this study with the average age of 19,53 ± 0,86 years old. All participants underwent training for 2 months in Surabaya. The average BMI was 23,16 ± 4,624. The active to passive smoker ratio was 7:3, with 21 active smokers and 7 passive smokers. The results of all pulmonary function tests in passive smokers were better than in active smokers. The average of VC in passive smokers was 3,45± 0,498, slightly higher than VC in active smokers which was 3,35 ± 1,032. The FVC average in passive smoker was 3,56 ± 0,489, also higher than active smoker with 3,43 ± 0,671. The higher FEV1 mean was in passive smoker with 1,84 ± 0,856, compared to active smoker with 1,53 ± 0,595. Similar results also could be seen in FEV1/FVC ratio. The FEV1/FVC ratio average in passive smokers was 2,39 ± 5,094, higher than those in active smokers with 0,60 ± 0,205. In this study, the total participants with normal results were higher in passive smoker which was 3 (33,333%) participants, and only 1 (4,761%) in active smoker. For moderate COPD, active smoker was higher with 3 (14,286%) participants, while passive smoker with moderate COPD was 2 (22,222%) participants. The amount of severe COPD was high in active smokers with 13 (61,905%) participants, and only 1 (11,111%) in passive smokers. Meanwhile the active smoker with very severe COPD was 4 (19,047%) participants, and in the passive smoker was 3 (33,333%) very severe COPD. Active and passive smokers have an equally greater risk of lung tissue damage. Most of the free radical (OH-) in cigarette will arrive at the alveolus that can damage the lungs while smoking cigarettes in active smoker or inhale cigarette smoke in passive smoker.