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Syaputra, Irfan
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Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Health Professions Medicine & Pharmacology Public Health

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The Effect Of Arm Power, Eye Coordination Through Waist Muscle Flexibility On The Ability To Swim In 50 M Breaststroke For Junior Swimming Athletes Syaputra, Irfan; Neldi, Hendri
STAMINA Vol 7 No 4 (2024): Jurnal Stamina Edisi Desember
Publisher : DEPARTEMEN KESEHATAN DAN REKREASI FAKULTAS ILMU KEOLAHRAGAAN

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Abstract

The problem in this study is that the breaststroke swimming ability of junior athletes in the city of Bukittinggi still looks stiff and underpowered. The purpose of this study was to determine the effect of arm muscle power, ankle coordination through flexibility on the breaststroke swimming ability of junior athletes in the city of Bukittinggi. This type of research is quantitative, namely casual comparative using path analysis techniques. This research was conducted from January to February 2021 in the swimming pool in the city of Bukittinggi. The population in this study were all junior swimming athletes in the city of Bukittinggi, totaling 32 people. The sampling technique used total sampling technique, so the number of samples in this study were 32 athletes. The instruments in this study were: 1) Arm muscle endurance test by carrying out the Pull-Up test, 2) Eye Coordination Using the Mitcel Soccer Test, Hip Muscle Flexibility Using the Sit and Reach Test, 4) The Ability to Swim in the Breaststroke 50 M. Technique data analysis using statistical path analysis or path analysis. The results of this study are: 1) Arm muscle power has a direct and significant effect on the 50 M breaststroke swimming ability of 12.96%. 2) Coordination of the ankles has a direct and significant effect on the 50 M Breaststroke swimming ability of 12.18%. 3) Waist muscle flexibility has a direct and significant effect on the 50 M Breaststroke Swimming Ability by 8.82%. 4) Arm Muscle Power has an indirect effect on the Ability to Swim 50 M Breaststroke through Waist Muscle Flexibility by 20.61%. 5) Coordination of the ankles has an indirect effect on the ability to swim 50 m breaststroke through waist muscle flexibility by 15.13%. 6) Arm muscle power, ankle coordination and waist muscle flexibility have a simultaneous effect on the 50 M breaststroke swimming ability by 80.80%.
PENGUJIAN UNSUR LOGAM Co, OKSIDA MgO DAN Al2O3 PADA JENIS TANAH LIMONITE DENGAN MENGGUNAKAN METODE X-RAY FLOURESCENCE (XRF) Wahab, Nurhikmah; Octavia, Rizka; Ramli, Irawati; Syaputra, Irfan
Jurnal Ilmiah Teknik Kimia Vol. 9 No. 1 (2025): JURNAL ILMIAH TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia, Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/jitk.v9i1.44851

Abstract

Nickel Laterite Laterite is defined as one of the various products of the chemical weathering process. This research aims to analyze the content of the metal elements cobalt (Co), magnesium oxide (MgO), and aluminum oxide (Al₂O₃) in limonite soil types using the X-Ray Fluorescence (XRF) method. Limonite soil was chosen because it is rich in iron minerals and its potential to contain valuable element.The test results show variations in the concentrations of Co,MgO,and Al₂O₃ in the various limonite soil samples analyzed, namely an average of 0.07% cobalt (Co),an average of 5.18% of Magnesium Oxide, and an average of Aluminum Oxide of 7.34%. Differences in element levels are influenced by mineralogical composition, geological origin, and environmental conditions in the sampling area.This research makes an important contribution to understanding the distribution of important elements in limonite soils,which can be the basis for more effective management of mineral resources in the future
Co-Authors Hendri Neldi Octavia, Rizka Ramli, Irawati Wahab, Nurhikmah