Explosive power is an important factor in sports. The aim of this research is to design a sensor-based leg muscle explosive power instrument that is suitable with the characteristics of the explosive power, which has a working unit kg.m / s. and instruments that are effective, efficient and economical. development research was carried out by adapting the Borg & Gall model. This study involved 4 experts as validator tools for validation tests namely tests and measurements, exercise physiology, training science and IT. Data collected using a questionnaire. the results obtained from expert validation are an average percentage of 91%. The conclusion of this study is that the design and work of the developed instrument is acceptable or feasible to be developed.

No abstract

Penelitian ini bertujuan untuk mengetahui pengaruh dari kebugaran jasmani, status gizi dan motivasi terhadap hasil belajar PJOK. Sampel dari penelitian ini adalah siswa SMK Abdurrab Kota Pekanbaru. Metode yang digunakan dalam penelitian ini adalah metode kuantitatif dengan menggunakan pendekatan analisi jalur (path analysis), yaitu menggunakan persamaan struktural yang melihat kualitas dimensi pengaruh- pengaruh Kesegaran Jasmani (X1), Status Gizi (X2), Motivasi Siswa (X3) Terhadap Hasil Belajar PJOK (Y). Penelitian ini dilakukan untuk melihat ada atau tidaknya pengaruh langsung dan tidak langsung variabel penyebab terhadap variabel akibat. Dari hasil penelitian yang telah dilakukan pada variabel kebugaran jasmani, status gizi, motivasi belajar dan hasil belajar peserta didik kelas XI SMK Abdurrab Pekanbaru, ditemukan bahwa terdapat pengaruh secara simultan Kebugaran Jasmani (X1), Status Gizi (X2), Motivasi Belajar (X3) dan Hasil Belajar (Y) didapatkan Rsquare = 0,330 atau pengaruh sebesar 33%, dimana terdapat pengaruh secara simultan antara kebugaran jasmani, status gizi, motivasi belajar dan hasil belajar peserta didik kelas XI SMK Abdurrab Pekanbaru.

This research aims to determine development of swimming sport, that viewed from Coach qualifications, athlete conditions, supporting facilities conditions, and mechanism of swimming sport organizations in Tanjungpinang City, Riau Islands Province. This research is qualitative research, informant from this research is swimming coach, organization committee, and athlete in Tanjungpinang City. Colecting data in this research were obtained by observation, interview, and documentation studies, while secondary data in this research through the document archive data held by swimming management and coach. Others informant will be added with snowball sampling. The result of this research showed that : (1) Qualification of swimming coaches in Tanjungpinang City is good enough and still need attentions, in quality needs to be improved again. (2) Conditions of swimming athletes in Tanjungpinang still not appropriate from ideal. (3) Supporting facilities of swimming sport in Tanjungpinang city looks very inadequate in quality and quantity, and must be managed spesifically (4) Performance of swimming sport organization in Tanjungpinang City is considered to provide support fairly well, while there is still work program that has not done well. It is suggeested to relate parties such as coach, athletes and organization committee to be able to pay attention for this four factors, to be a development of swimming sport in Tanjungpinang City can go according to plan.

The problem in this study originated from asthma complaints suffered by elementary school students in Nanggalo Lapai Subdistrict, Padang City, such as SD Negeri 06 and SD Negeri 18, Nanggalo Lapai Subdistrict, Padang City. This causes, students have limitations in physical activity, fatigue, lack of enthusiasm, less ideal posture (tend to be a bit thin), and have below average academic value. This study aims to determine the effect of swimming style and nutritional status on asthma complaints of elementary school students in Nanggalo Lapai Subdistrict, Padang City. This type of research is an experiment with factorial design by level 2 x 2. The population in this study were all students of SD Negeri 06 and 18 of Nanggalo Lapai District of Padang City who suffered from asthma complaints totaling 32 people. The sampling technique uses saturated sampling, so that all populations are sampled. The asthma complaint instrument uses peak flow meter and nutritional status using anthopometry. Data were analyzed with ANOVA 2 x 2, and Tukey's further test if there was an interaction between swimming style and nutritional status at the significance level α = 0.05. Hypothesis testing results show, (1) there is a difference in effect between breaststroke and freestyle swimming against asthma complaints (Qh = 3.05 > Qt = 3.00), (2) there is an interaction between breaststroke and freestyle swimming with nutritional status (Fh = 8.11 > Ft = 4.20), (3) there is a difference between the groups that are given breaststroke and freestyle swimming treatments seen from the ideal nutritional status of asthma complaints (Qh = 5.00 > Qt = 3,26), and (4) there is no difference between the groups that were given treatment of breaststroke and freestyle swimming seen from the nutritional status not ideal for asthma complaints (Qh = 0.69 < Qt = 3.26).