HUBUNGAN DAYA LEDAK OTOT TUNGKAI DAN KECEPATAN REAKSI DENGAN PERFORMA TRACK START PADA ATLET RENANG

MAGDALENA RENIA SABINA, . (2026) HUBUNGAN DAYA LEDAK OTOT TUNGKAI DAN KECEPATAN REAKSI DENGAN PERFORMA TRACK START PADA ATLET RENANG. Sarjana thesis, UNIVERSITAS NEGERI JAKARTA.

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Abstract

Penelitian ini bertujuan untuk : 1) mengetahui hubungan daya ledak otot tungkai dengan performa track start renang. 2) mengetahui hubungan kecepatan reaksi dengan performa track start renang. 3) mengetahui hubungan daya ledak otot tungkai dan kecepatan reaksi secara bersama-sama dengan performa track start renang. Penelitian ini menggunakan metode deskriptif korelasional dengan pendekatan kuantitatif. Populasi penelitian ini adalah atlet renang dalam pembinaan KEMENPORA dan DISPORA DKI Jakarta. Sampel penelitian ini menggunakan teknik total sampling yang berjumlah 27 atlet. Variabel penelitian terdiri atas daya ledak otot tungkai (X₁), kecepatan reaksi (X₂), dan performa track start renang (Y). Pengumpulan data dilakukan melalui tes daya ledak otot tungkai, tes kecepatan reaksi, dan tes performa track start renang. Data kemudian diolah menggunakan korelasi Product moment dan korelasi ganda. Hasil penelitian menunjukkan bahwa: (1) terdapat hubungan yang signifikan antara daya ledak otot tungkai dengan performa track start renang dengan koefisien korelasi sebesar r = 0,78 dan kontribusi sebesar 61% dimana hal ini menunjukkan thitung = 6,28 > ttabel = 2,06, dengan perhitungan regresi sebesar Ŷ = 10,85 + 0,78 X₁ dengan demikian kenaikan variabel X₁ sebesar 0,78 diikuti pula oleh variabel Y sebesar 10,85; (2) terdapat hubungan yang signifikan antara kecepatan reaksi dengan performa track start renang dengan koefisien korelasi sebesar r = 0,44 dan kontribusi sebesar 19% dimana hal ini menunjukkan thitung = 2,48 > ttabel = 2,06, dengan perhitungan regresi sebesar Ŷ = 72,20 - 0,44 X₂ dengan demikian setiap peningkatan 1 satuan skor X₂ akan diikuti penurunan skor performa track start sebesar 0,44 satuan; (3) terdapat hubungan yang signifikan antara daya ledak otot tungkai dan kecepatan reaksi secara bersama-sama dengan performa track start renang dengan koefisien korelasi ganda sebesar R = 0,79 dan kontribusi sebesar 62% dimana hal ini menunjukkan Fhitung = 20,58 > Ftabel = 3,40, dengan perhitungan regresi sebesar Ŷ = 39,50 + 1,19 X₁ - 0,98 X2 dengan demikian daya ledak otot tungkai (X₁) dan kecepatan reaksi (X₂) secara bersama-sama berkontribusi dengan performa track start. Hasil uji hipotesis menunjukkan bahwa H₀ ditolak dan H₁ diterima pada ketiga hipotesis penelitian. Dengan demikian, daya ledak otot tungkai dan kecepatan reaksi memiliki hubungan dengan performa track start pada atlet renang. ***** This study aimed to: (1) determine the relationship between leg muscle explosive power and swimming track start performance; (2) determine the relationship between reaction speed and swimming track start performance; and (3) determine the relationship between leg muscle explosive power and reaction speed simultaneously with swimming track start performance. This study employed a quantitative approach using a descriptive correlational method. The population consisted of 27 swimming athletes participating in the training programs of the KEMENPORA and DISPORA DKI Jakarta. The sample was selected using a total sampling technique, resulting in 27 athletes. The research variables included leg muscle explosive power (X₁), reaction speed (X₂), and swimming track start performance (Y). Data were collected through a leg muscle explosive power test, a reaction speed test, and a swimming track start performance test. The data were analyzed using the Pearson Product-Moment correlation and multiple correlation analyses. The results showed that: (1) there was a significant relationship between leg muscle explosive power and swimming track start performance, with a correlation coefficient of r = 0.78 and a contribution of 61%, where tcount = 6.28 > ttable = 2.06. The regression equation was Ŷ = 10.85 + 0.78X₁, indicating that every one-unit increase in X₁ was associated with an increase of 0.78 units in Y; (2) there was a significant relationship between reaction speed and swimming track start performance, with a correlation coefficient of r = −0.44 and a contribution of 19%, where tcount = 2.48 > ttable = 2.06. The regression equation was Ŷ = 72.20 − 0.44X₂, indicating that every one-unit increase in X₂ was associated with a decrease of 0.44 units in swimming track start performance; and (3) there was a significant simultaneous relationship between leg muscle explosive power and reaction speed with swimming track start performance, with a multiple correlation coefficient of R = 0.79 and a contribution of 62%, where Fcount = 20.58 > Ftable= 3.40. The multiple regression equation was Ŷ = 39.50 + 1.19X₁ − 0.98X₂, indicating that leg muscle explosive power (X₁) and reaction speed (X₂) jointly contributed to swimming track start performance. The hypothesis testing results showed that H₀ was rejected and H₁ was accepted for all three research hypotheses. Therefore, leg muscle explosive power and reaction speed are significantly related to swimming track start performance in competitive swimmers.

Item Type:	Thesis (Sarjana)
Additional Information:	1). Prof. Dr. Abdul Sukur, S.Pd., M.Si. ; 2). Dr. Juriana, S.Psi., M.Si., Psikolog.
Subjects:	Olah Raga dan Seni Pertunjukan > Pendidikan Olah Raga > Aneka Olah Raga > Renang Olah Raga dan Seni Pertunjukan > Pendidikan Olah Raga Olah Raga dan Seni Pertunjukan > Pendidikan Olah Raga > Aneka Olah Raga
Divisions:	FIO > S1 Pendidikan Kepelatihan Olahraga
Depositing User:	Magdalena Renia Sabina .
Date Deposited:	20 Jul 2026 02:57
Last Modified:	20 Jul 2026 02:57
URI:	http://repository.unj.ac.id/id/eprint/66726

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