Main Article Content
Abstract
The purpose of this study was to produce an effective and efficient digital-based sit and reach measurement test kit as a test development and measurement of back muscle flexibility. The type of research in this research is a mixed methods research with a Research & Development (R&D) research design from Borg and Gall. This research was conducted with 9 research stages namely, (1) Research and information collecting, (2) Planning, (3) Develop preliminary form of product, (4) Preliminary field testing, (5) Main product revision, (6) Main field testing, (7) Operational product revision, (8) Operational field testing, (9) Final product revision. The population in this study used students from the Faculty of Sports Science and Athletes of Pelatda Sumut. Furthermore, from the Phase I trial, totaling 15 people showed a score of 87.8% with the Eligible criteria, then from the Phase II trial, which totaled 30 Pelatda Sumut athletes, it showed a figure of 90% in the Very Eligible category. From the results of the research/feasibility test carried out by test and measurement experts, IT experts and sports academic experts, it shows a score of 96% in the Very Eligible category, so it can be used. Based on the data obtained, the development of a digital-based sit and reach test and measurement tool was declared feasible to be developed as a test tool and measurement of back muscle flexibility.
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Copyright (c) 2023 Abdi Korintinus Simangungsong, Nurkadri, Sabaruddin Yunis Bangun

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References
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References
Akhmad, I. (2016). Standar kompetensi mata pelajaran pjok. Kemendikbud Direktorat Jenderal Guru Dan Tenaga Kependidikan, 1–8.
Antoni, P. (2021). Hubungan Kelentukan Otot Pinggang Dengan Kemampuan Tolak Peluru Pada Siswa Smk Negeri 1 Tembilahan Hulu Kabupaten Indragiri Hilir. Jurnal Olahraga Indragiri (JOI), 8(1), 288–304.
Arifin, I., Amir Supriadi, & Ibrahim Sembiring. (2023). Development of Science and Technology in Sports Through Test and Measurement Tools Shoulder and Wrist Android Based. Kinestetik : Jurnal Ilmiah Pendidikan Jasmani, 7(2), 441–450. https://doi.org/10.33369/jk.v7i2.27332
Arni, M. E., & Indrayana, B. (2021). Tingkat Kondisi Fisik Atlet Cabang Olahraga Taekwondo Kota Jambi Menuju PORPROV 2021. Journal Coaching Education Sports, 2(2), 213–224. https://doi.org/10.31599/jces.v2i2.765
Bangun, S. Y., Supriadi, A., & Tarmizi, A. (2020). Development of Shoot the Ball After Dribble Practice Towards Soccer School Student Athletes. Journal Physical Education, Health and Recreation, 4(2), 79. https://doi.org/10.24114/pjkr.v4i2.14721
Dewi, R., Berutu, M., Pane, B. S., & Nurkadri, N. (2022). Development of Exercise Variations Instructional Videos Attack Using Punching Pad Taekwondo Beginner Athletes Year 2021. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga, 14(2), 185. https://doi.org/10.26858/cjpko.v14i2.32931
Dewi, R., Verawati, I., Sukamton, A., Hakim, H., Burhaein, E., & Lourenço, C. C. V. (2023). The Impact of Basic Motion Activities on Social Interaction in Elementary School Students. International Journal of Human Movement and Sports Sciences, 11(1), 143–151. https://doi.org/10.13189/saj.2023.110117
Endriani, D., Akhmad, I., & Daulay, B. (2022). Development of E-Book Based Volleyball Learning Model. Kinestetik : Jurnal Ilmiah Pendidikan Jasmani, 6(2), 363–370. https://doi.org/10.33369/jk.v6i2.21915
Endriani, D., Sitompul, H., Mursid, R., & Dewi, R. (2022). Development of a Lower Passing Model for Volleyball Based Umbrella Learning Approach. International Journal of Education in Mathematics, Science and Technology, 10(3), 681–694. https://doi.org/10.46328/ijemst.2508
Harahap, P. S., Rahma Dewi, & Nurkadri. (2023). Development of WEB Based Police Member Proficiency Test Application. Kinestetik : Jurnal Ilmiah Pendidikan Jasmani, 7(2), 353–362. https://doi.org/10.33369/jk.v7i2.27203
Hardiyono, B., Muslimin, Hartati, Fikri, A., Suharta, A., Nurkadri, & Neisya. (2023). Design of Power Sensor Based Test Instrument for Limb Muscle. International Journal of Human Movement and Sports Sciences, 11(2), 432–439. https://doi.org/10.13189/saj.2023.110221
Hendi Gunawan. (2013). Pengaruh Latihan Kelentukan Togok Terhadap Kemampuan Roll Depan Pada Senam Lantai. Jurnal Pendidikan Dan Pembelajaran, 2(7), 1–11.
Hilda Oktri Yeni, R. S. F. N. (2020a). Pengembangan Alat Tes Flexiometer Untuk Pengukuran Kelentukan/Kelenturan Pinggang Program Studi Pendidikan Jasmani Kesehatan Dan Rekreasi Fakultas Keguruan Dan Ilmu Pendidikan. Jurnal Pendidikan MINDA, 2(1), 13–25.
Hilda Oktri Yeni, R. S. F. N. (2020b). Pengembangan Alat Tes Flexiometer Untuk Pengukuran Kelentukan/Kelenturan Pinggang Program Studi Pendidikan Jasmani Kesehatan Dan Rekreasi Fakultas Keguruan Dan Ilmu Pendidikan. Jurnal Pendidikan MINDA, 2(1), 13–25.
Hutagalung, A. P., Akhmad, I., & M. Irfan. (2023). Development of Test and Measurement Tools Standing Stork Test Android Based. Kinestetik : Jurnal Ilmiah Pendidikan Jasmani, 7(2), 293–304. https://doi.org/10.33369/jk.v7i2.27333
Imran Akhmad, S. (2017). Bleep Test Countermeasures Test Using Infrared and Microcontroller Based Computer System. International Journal of Science and Research (IJSR), 7(8), 759–761. https://doi.org/DOI:10.21275/ART2019550
Kasih, I., Faridah, E., Siregar, S., Bangun, S. Y., & Sinulingga, A. (2022). Effectiveness of Sensor-Based Media to Improve Referee Education. International Journal of Education in Mathematics, Science and Technology, 10(2), 391–408. https://doi.org/10.46328/ijemst.2248
Komaini, A. (2021). Perbedaan Kondisi Fisik Saat Menstruasi Dan Tidak Menstruasi Pada Atlet Taekwondo. Angewandte Chemie International Edition, 6(11), 951–952., 2013–2015.
Kresnapati, P., Setyawan, D. A., & Setiyawan, S. (2020). Pengembangan Komponen Tes Kondisi Fisik Berbasis Android. Physical Activity Journal, 2(1), 42. https://doi.org/10.20884/1.paju.2020.2.1.3166
Mesnan, M., & Supriadi, A. (2022). Development of Shoulder and Wrist Test Instruments Based on Digital. Kinestetik : Jurnal Ilmiah Pendidikan Jasmani, 6(2), 328–334. https://doi.org/10.33369/jk.v6i2.21913
Nurkadri, N., Silwan, A., Sitepu, I. D., Nur, M., Akbar, T., & Gunri, R. N. (2021). Match Report Application for Match Commissioner (MC) Football Match. Kinestetik : Jurnal Ilmiah Pendidikan Jasmani, 5(2), 256–265. https://doi.org/10.33369/jk.v5i2.15666
prof. dr. sugiyono. (2010). prof. dr. sugiyono, metode penelitian kuantitatif kualitatif dan r&d. intro ( PDFDrive ).pdf. In Bandung Alf (p. 143).
Rachmat Agusli, R. T. dan N. K. (2021). Alat Ukur Tinggi Dan Berat Badan Berbasis Arduino Uno. AJCSR [Academic Journal of Computer Science Research] , 3(1), 26–31.
Ricardo Valentino Latuheru. (2019). Hubungan Antara Kelentukan Togok, Keseimbangan Badan, Dan Daya Ledak Tungkai Dengan Kemampuan Lompat Jauh.
Sinaga, F., Reza Destya, M., Negeri, S., Dairi, K., & Kepelatihan Olahraga, P. (2022). Giving Sports Burden to Behavior of Students of the Faculty of Sports Science, Universitas Negeri Medan. East Asian Journal of Multidisciplinary Research (EAJMR), 1(8), 1519–1526. https://journal.formosapublisher.org/index.php/eajmr/index
Suharta, A., Supriadi, A., & Nurkadri, N. (2021). Design of Digital Based Volley Ball Basic Techniques Test Instrument. Budapest International Research and Critics Institute (BIRCI-Journal): Humanities and Social Sciences, 4(2), 3170–3176. https://doi.org/10.33258/birci.v4i2.2049
Supriadi, A., & Mesnan, M. (2022a). Development of Application Based Football Learning. Kinestetik : Jurnal Ilmiah Pendidikan Jasmani, 6(2), 297–304. https://doi.org/10.33369/jk.v6i2.21852
Supriadi, A., & Mesnan, M. (2022b). Development of Application Based Football Learning. Kinestetik : Jurnal Ilmiah Pendidikan Jasmani, 6(2), 297–304. https://doi.org/10.33369/jk.v6i2.21852
Supriadi, A., & Nopember Haloho, J. M. (2022). Pengembangan Alat Tes dan Pengukuran Tinggi dan Berat Badan Berbasis Android. Jurnal Prestasi, 6(2), 48–57. https://jurnal.unimed.ac.id/2012/index.php/jpsi/index
Zega, Y., Supriadi, A., & Novita, N. (2022). Speed Test and Measurement Tools Shooting Sensor Based. Kinestetik : Jurnal Ilmiah Pendidikan Jasmani, 6(2), 335–340. https://doi.org/10.33369/jk.v6i2.22232
Zulyaden, A., Dewi, R., & Tantri, A. (2022). Football Talent Scouting Application Development “Sport Search” Method based on Android. Football Talent Scouting Application Development “Sport Search” Method Based on Android, 1–10. https://doi.org/10.4108/eai.20-9-2022.2324507