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The Effect of Jack Knife Stretching and Nordic Hamstring Exercise on the Hamstring Muscle Flexibility of Futsal Athletes

Journal of Physical Education Health and Sport · Vol. 12 No. 1 (2025) · hlm. 236–241

DOI
10.15294/jpehs.v12i1.31739
ISSN
2354-7901, 2354-8231
Terbit
2025-07-31
Penerbit
Universitas Negeri Semarang
Bahasa
eng

Abstrak

The purpose of this study is to examine whether there is a significant effect of jack knife stretching and Nordic hamstring exercise on the hamstring muscle flexibility of futsal extracurricular students at state junior high school 7 Cimahi, and to determine whether there is a significant difference in the effects between jack knife stretching and Nordic hamstring exercise on the hamstring muscle flexibility of these students. The method used in this study is an experimental method with a Two Groups Pretest and Posttest Design. The population in this study consisted of 22 male students from state junior high school 7 Cimahi who participated in the futsal extracurricular program. The sample also consisted of 22 students, selected using the total sampling technique, which means the entire population was used as the sample. The sample was then divided into two groups using the ABBA formula. The treatment was conducted over 15 sessions (3 times per week). To measure hamstring muscle flexibility, the researcher used the Sit and Reach Test instrument. The Shapiro-Wilk test was used to test data normality, the Paired t-test was used to test the effect, and the Independent t-test was used to compare the effects. The results after the data analysis, a significance value of 0.000 was obtained, indicating that there is a significant effect from the treatment of jack knife stretching and nordic hamstring exercise. Data analysis showed that there was no significant difference in the effects between jack knife stretching and Nordic hamstring exercise. It can be concluded that both jack knife stretching and Nordic hamstring exercise have an effect on hamstring muscle flexibility.

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  • Indonesia University of Education
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Rekan penulisOrganisasiArtikel bersama
Mochamad Yamin SaputraIndonesia University of Education22
Komarudin KomarudinIndonesia University of Education6
Alen RismayadiIndonesia University of Education5
Siti NursabaIndonesia University of Education3
Mona Fiametta FebriantyIndonesia University of Education3
MulyanaAfiliasi tidak diketahui3
Dede Rohmat NurjayaIndonesia University of Education3
Yadi SunaryadiIndonesia University of Education2
KomarudinIndonesia University of Education2
Mustika FitriIndonesia University of Education2
Salma Maharani SopandiIndonesia University of Education2
Berliana BerlianaIndonesia University of Education2
Wildhan Rahmadian SofyanIndonesia University of Education2
Muhammad Gilang RamadhaIndonesia University of Education2
Patriana Nurmansyah AwwaludinIndonesia University of Education2
Sandey Tantra ParamithaIndonesia University of Education2
Falah Tri Nur AfifahIndonesia University of Education2
Dea DestianIndonesia University of Education2
Putri MeidianaIndonesia University of Education2
Alodia Syahda NadindraIndonesia University of Education2
Sadira SusilawatiIndonesia University of Education2
Yusuf HidayatIndonesia University of Education1
Ahmad FalahudinIndonesia University of Education1
Muhammad AlkhalishIndonesia University of Education1
Triana Puspa DewiIndonesia University of Education1
Nida'ul HidayahAfiliasi tidak diketahui1
Feisal Farras AssyukurIndonesia University of Education1
- Muhamad Ryan NugrahaIndonesia University of Education1
Muhamad TafaqurIndonesia University of Education1
Helmi Akmal FauzanAfiliasi tidak diketahui1
Nawang Wulan FebrianiIndonesia University of Education1
Pipit PitrianiIndonesia University of Education1
Kanaya Siti Nur Syari'ahIndonesia University of Education1
Karina AdityaAfiliasi tidak diketahui1
Megawati AgustiandhoIndonesia University of Education1
Nada Nadia SalsabilaIndonesia University of Education1

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Sumber metadata: OAI-PMH (metadata jurnal) https://journal.unnes.ac.id/journals/jpehs/oai, pertama di-harvest 6 Nov 2026, terakhir terlihat 8 Nov 2026.
Metadata asli (oai_dc) 
<oai_dc:dc xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/  http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en">The Effect of Jack Knife Stretching and Nordic Hamstring Exercise on the Hamstring Muscle Flexibility of Futsal Athletes</dc:title>
	<dc:creator xml:lang="en">Ilham Jaya Kusumah</dc:creator>
	<dc:creator xml:lang="en">Komarudin</dc:creator>
	<dc:creator xml:lang="en">Widi Kusumah</dc:creator>
	<dc:creator xml:lang="en">Geraldi Novian</dc:creator>
	<dc:subject xml:lang="en">Futsal; Hamstring muscles flexibility; Jack knife stretching; Nordic Hamstring Exercise</dc:subject>
	<dc:description xml:lang="en">The purpose of this study is to examine whether there is a significant effect of jack knife stretching and Nordic hamstring exercise on the hamstring muscle flexibility of futsal extracurricular students at state junior high school 7 Cimahi, and to determine whether there is a significant difference in the effects between jack knife stretching and Nordic hamstring exercise on the hamstring muscle flexibility of these students. The method used in this study is an experimental method with a Two Groups Pretest and Posttest Design. The population in this study consisted of 22 male students from state junior high school 7 Cimahi who participated in the futsal extracurricular program. The sample also consisted of 22 students, selected using the total sampling technique, which means the entire population was used as the sample. The sample was then divided into two groups using the ABBA formula. The treatment was conducted over 15 sessions (3 times per week). To measure hamstring muscle flexibility, the researcher used the Sit and Reach Test instrument. The Shapiro-Wilk test was used to test data normality, the Paired t-test was used to test the effect, and the Independent t-test was used to compare the effects. The results after the data analysis, a significance value of 0.000 was obtained, indicating that there is a significant effect from the treatment of jack knife stretching and nordic hamstring exercise. Data analysis showed that there was no significant difference in the effects between jack knife stretching and Nordic hamstring exercise. It can be concluded that both jack knife stretching and Nordic hamstring exercise have an effect on hamstring muscle flexibility.  </dc:description>
	<dc:publisher xml:lang="en">Universitas Negeri Semarang</dc:publisher>
	<dc:date>2025-07-31</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en">Peer-reviewed Article</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://journal.unnes.ac.id/journals/jpehs/article/view/31739</dc:identifier>
	<dc:identifier>10.15294/jpehs.v12i1.31739</dc:identifier>
	<dc:source xml:lang="en">Journal of Physical Education Health and Sport; Vol. 12 No. 1 (2025); 236 - 241</dc:source>
	<dc:source>2354-7901</dc:source>
	<dc:source>2354-8231</dc:source>
	<dc:source>10.15294/jpehs.v12i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://journal.unnes.ac.id/journals/jpehs/article/view/31739/6070</dc:relation>
	<dc:rights xml:lang="en">Copyright (c) 2025 Journal of Physical Education Health and Sport</dc:rights>
</oai_dc:dc>