Melola Discovery

← Melola Discovery

Jurnal

EFFECTIVENESS OF WHEY PROTEIN AND SOYMILK ON MUSCLE MASS AND HEMATOCRIT LEVELS OF VOLLEYBALL ATHLETES

Journal of Sport Science and Fitness · Vol. 10 No. 1 (2024) · hlm. 1–5

DOI
10.15294/jssf.v10i1.7229
ISSN
2745-5718, 2252-6528
Terbit
2024-07-31
Penerbit
Universitas Negeri Semarang
Bahasa
eng

Abstrak

Volleyball is one of the team sports that requires robust muscle mass for exceptional performance and endurance. Protein intake contributes to the formation of muscle mass and red blood cells that are tightly linked to hematocrit levels. The objective of this study was to determine the effectiveness of whey protein and soymilk on muscle mass and hematocrit levels in volleyball athletes. The study was a true experiment with a randomized pre-test and post-test design, involving 20 adolescent, male volleyball athletes divided into 2 groups: whey protein and the soymilk group selected by purposive sampling. The research variables were muscle mass and hematocrit levels. Statistical analysis used independent t-test and paired t-test. The results showed increased muscle mass in the whey protein group (3.50 ± 15.04), but the opposite was found in the soymilk (-1.82 ± 6.46), resulting in significant difference in muscle mass changes between groups (p=0.020). Both groups exhibited reduced hematocrit levels (whey protein group = -3.50±7.69; soymilk group= -1.20±6.30), with a significantly higher decrease shown in the whey protein group (p=0.019).

Kata kunci

Jaringan kolaborasi para penulis

7 penulis · 12 tautan kepenulisan bersama

Arahkan kursor atau ketuk sebuah nama untuk menyorot rekan penulisnya. Klik dua kali untuk membuka halaman penulis.

  • Universitas Muhammadiyah Semarang
  • Afiliasi tidak diketahui
  • Organisasi berbeda
  • Organisasi sama
  • Afiliasi tidak diketahui
  • Garis lebih tebal = lebih banyak artikel bersama · lingkaran lebih besar = lebih banyak artikel
Tampilkan sebagai tabel
Rekan penulisOrganisasiArtikel bersama
Ria Purniawan SulistianiAfiliasi tidak diketahui1
Hapsari Sulistya KusumaUniversitas Muhammadiyah Semarang1
Ali Akbar KarimullohUniversitas Muhammadiyah Semarang1

Afiliasi berasal dari OpenAlex; metadata OAI-PMH jurnal tidak memuatnya. Penulis tanpa ID OpenAlex dicocokkan berdasarkan nama, sehingga dua orang bisa tergabung atau satu orang bisa terpisah.

Sumber metadata: OAI-PMH (metadata jurnal) https://journal.unnes.ac.id/journals/jssf/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">EFFECTIVENESS OF WHEY PROTEIN AND SOYMILK ON MUSCLE MASS AND HEMATOCRIT LEVELS OF VOLLEYBALL ATHLETES</dc:title>
	<dc:creator xml:lang="en">Ulvie, Yuliana Noor Setiawati</dc:creator>
	<dc:creator xml:lang="en">Nabila, Aphrodhit Justicia</dc:creator>
	<dc:creator xml:lang="en">Rosidi, Ali </dc:creator>
	<dc:creator xml:lang="en">Labtrobdiba, Zahra</dc:creator>
	<dc:subject xml:lang="en">whey protein</dc:subject>
	<dc:subject xml:lang="en">soy milk</dc:subject>
	<dc:subject xml:lang="en">muscle mass</dc:subject>
	<dc:subject xml:lang="en">hematocrit levels</dc:subject>
	<dc:subject xml:lang="en">volleyball athlete</dc:subject>
	<dc:description xml:lang="en">Volleyball is one of the team sports that requires robust muscle mass for exceptional performance and endurance. Protein intake contributes to the formation of muscle mass and red blood cells that are tightly linked to hematocrit levels. The objective of this study was to determine the effectiveness of whey protein and soymilk on muscle mass and hematocrit levels in volleyball athletes. The study was a true experiment with a randomized pre-test and post-test design, involving 20 adolescent, male volleyball athletes divided into 2 groups: whey protein and the soymilk group selected by purposive sampling. The research variables were muscle mass and hematocrit levels. Statistical analysis used independent t-test and paired t-test. The results showed increased muscle mass in the whey protein group (3.50 ± 15.04), but the opposite was found in the soymilk (-1.82 ± 6.46), resulting in significant difference in muscle mass changes between groups (p=0.020). Both groups exhibited reduced hematocrit levels (whey protein group = -3.50±7.69; soymilk group= -1.20±6.30), with a significantly higher decrease shown in the whey protein group (p=0.019).</dc:description>
	<dc:publisher xml:lang="en">Universitas Negeri Semarang</dc:publisher>
	<dc:date>2024-07-31</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/jssf/article/view/7229</dc:identifier>
	<dc:identifier>10.15294/jssf.v10i1.7229</dc:identifier>
	<dc:source xml:lang="en">Journal of Sport Science and Fitness; Vol. 10 No. 1 (2024): Journal of Sport Science and Fitness; 1-5</dc:source>
	<dc:source>2745-5718</dc:source>
	<dc:source>2252-6528</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://journal.unnes.ac.id/journals/jssf/article/view/7229/1137</dc:relation>
	<dc:rights xml:lang="en">Copyright (c) 2024 Journal of Sport Science and Fitness</dc:rights>
</oai_dc:dc>