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Surface electromyography (SEMG) is an application that helps coaches and athletes recognize and understand muscle contractions during practice and matches. Unfortunately, this tool is very expensive, so it is necessary to develop SEMG, which is cheap but has the potential to detect muscle contractions during movement. This research aims to develop an inexpensive SEMG for detecting muscle contractions. 10 sports students participated in this study, and they were active in carrying out measured and programmed physical activities four times a week. This research is an experimental study; all students will do barbell squats at 80% of the maximum load. Differences in muscle contractions on the SEMG sensor during concentric and eccentric contractions will be analyzed using the paired sample t-test. The results of this study found a difference in the amplitude of the two muscle contractions with p

The research aims to develop a digital application for preparing an exercise program to make it easier for trainers to prepare an exercise program. This research uses Agile Development Methods. This research was conducted at the Faculty of Sports Science, Unesa, involving a sample of 50 students. The sampling technique in this study used a purpose random sampling technique. Data collection techniques using surveys. Based on the results of observations made to the sample, a total of 78% of the sample stated that the development of this application was going very well, 14% was good and 8% was sufficient. It can be concluded that this digital-based training program web is suitable for use by trainers in preparing training programs.

Latihan fisik memiliki konsekwensi yang cukup besar terhadap perubahan sistem anatomi dan fisiologi tubuh seorang atlet. Perubahan yang paling besar dan langsung terjadi adalah pada perubahan ritme denyut nadi sebelum, saat dan setelah melaksanakan aktifititas fisik olahraga. denyut nadi pemulihan adalah salah satu contoh perubahan yang sangat jelas setelah melakukan aktifitas fisik olahraga. Penelitian ini memiliki tujuan untuk mengetahui perubahan denyut nadi pemulihan dengan proses penghitungan yang berbeda yaitu berdiri, duduk dan tidur. 12 lelaki dewasa umur kurang lebih 19 tahun mengikuti penelitian ini, mereka dibagi menjadi tiga kelompok pengukuran denyut nadi. Seluruh sampel akan melakukan prosedur tes naik turun tanggan menggunakan protokol YMCA step test. Setelah melakukan protokol tes semua sampel akan dihitung denyut nadi pemulihan setelah 3 menit istirahat. Dari hasil penelitian didapat prosentase penurunan denyut nadi pemulihan setelah istirahat 3 menit adalah dengan pengukuran posisi berdiri sebesar 28.9%, posisi duduk 31.7% dan pada posisi tidur 34.4%. kesimpulan pada penelitian ini adalah posisi tubuh saat pengukuran denyut nadi memiliki kontribusi yang berbeda-beda dimana proses pemulihan dengan tidur terlentang memiliki prosentase tertinggi dalam menurunkan denyut nadi.