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Journals / Yalova Üniversitesi Spor Bilimleri Dergisi / 2026 / Cilt: 5 Sayı: 2

The Effect of Whey Protein Supplementation on Some Performance Parameters in Female Tennis Athletes

Kadın Tenis Sporcularında Whey Protein Takviyesinin Bazı Performans Parametrelerine Etkisi

Gaye Kanık(SİNOP ÜNİVERSİTESİ)0009-0004-4762-1418
Zehra Kargın(SİNOP ÜNİVERSİTESİ)0009-0002-1005-1226
Halit Şar(SİNOP ÜNİVERSİTESİ)0000-0001-9866-5403
Ahmet Mor(SİNOP ÜNİVERSİTESİ)0000-0002-1181-1111
Pages
60–80
Publication Date
2026-10-23
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The results indicated no statistically significant differences in anaerobic power, ball speed, handgrip strength, vertical jump performance, RPE, or GSRS scores (p>0.05).

📌 3 Key Takeaways

🎯
Objective & Hypothesis:The aim of this study was to investigate the acute effects of pre-exercise whey protein supplementation on performance in female tennis players.
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Key Findings & Data:A total of 12 active and trained female tennis players aged 18–25 years voluntarily participated in the study.
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Conclusion & Impact:The results indicated no statistically significant differences in anaerobic power, ball speed, handgrip strength, vertical jump performance, RPE, or GSRS scores (p>0.05).
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Besin takviyesi · Sportif performans · Tenis

Abstract

The aim of this study was to investigate the acute effects of pre-exercise whey protein supplementation on performance in female tennis players. A total of 12 active and trained female tennis players aged 18–25 years voluntarily participated in the study. The study was conducted using a single-blind, counterbalanced crossover experimental design with three testing sessions separated by 48-hour intervals. Participants received whey protein (30 g + 300 mL water), placebo (non-caloric sweetener + 300 mL water), and water only (control condition). Thirty minutes after supplementation, participants completed a series of performance tests, including vertical jump, visual reaction time, T-agility test, 10-m and 20-m sprint, handgrip strength, and ball speed assessments. The Borg Rating of Perceived Exertion (RPE) Scale was used to assess perceived exertion, the Visual Analog Scale (VAS) was used to evaluate delayed onset muscle soreness, and the Gastrointestinal Symptom Rating Scale (GSRS) was used to assess gastrointestinal symptoms. The results indicated no statistically significant differences in anaerobic power, ball speed, handgrip strength, vertical jump performance, RPE, or GSRS scores (p>0.05). However, significant differences were observed in 10-m and 20-m sprint performance, T-agility performance, VAS scores, and the fastest and final visual reaction time measures (p<0.05). In conclusion, pre-exercise whey protein consumption may support sprint and visual reaction performance. Nevertheless, the superior sprint and agility performances observed in both the whey protein and placebo groups compared with the control condition suggest that placebo effects may also contribute to performance improvements. Therefore, although whey protein may exert beneficial effects on certain performance parameters, further research is needed to determine whether these effects are independent of placebo responses.

Özet

Bu çalışmanın amacı, kadın tenis sporcularında egzersiz öncesi whey protein takviyesinin performans üzerindeki akut etkilerini incelemektir. Çalışmaya 18-25 yaş grubu, aktif ve antrenmanlı 12 kadın tenisçi gönüllü olarak katıldı. Tek kör, çapraz-döngülü ve karşıt dengeli deneysel bir tasarım ile yürütülen çalışma, 48 saatlik aralıklarla üç test gününde gerçekleştirildi. Sporculara whey protein (30 g + 300 ml su), plasebo (kalorisiz tatlandırıcı + 300 ml su) ve 300 ml su (kontrol) verildi. Her katılımcıya, besin takviyesinden 30 dakika sonra, dikey sıçrama, görsel reaksiyon zamanı, T çeviklik testi, 10-20 m sürat, el kavrama kuvveti ve top hızı performans testleri uygulandı. Her ölçümün ardından Algılanan Zorluk Derecesini (AZD) değerlendirmek için Borg Skalası, ölçümden sonraki günde ise gecikmiş kas ağrısını belirlemek için Görsel Analog Skala (GAS) kullanıldı. Gastrointestinal sistem semptomlarını değerlendirmek için Gastrointestinal Semptom Derecelendirme Ölçeği (GSDÖ) uygulandı. Testler sonucunda, anaerobik güç, top hızı, el kavrama kuvveti, dikey sıçrama, AZD, GSDÖ değerlerinde istatistiksel olarak anlamlı fark olmadığı belirlendi (p>0,05). Bunun yanında, 10 m ve 20 m sürat, T çeviklik testi, GAS, görsel reaksiyonun en hızlı ve son değerlerinde istatistiksel olarak anlamlı farklılık olduğu belirlendi (p<0,05). Sonuç olarak, egzersiz öncesi whey protein tüketiminin sürat ve görsel reaksiyon performansını destekleyebileceği görülmüştür. Bununla birlikte, 10 m ve 20 m sürat ile çeviklik performanslarında hem whey protein hem de plasebo gruplarının kontrol grubuna göre daha iyi sonuçlar göstermesi, performans üzerindeki iyileşmelerde plasebo etkisinin de rol oynayabileceğini düşündürmektedir. Elde edilen bulgular whey proteinin bazı performans parametreleri üzerinde olumlu etkiler sağlayabileceğini göstermekle birlikte, bu etkilerin plasebo yanıtından tamamen bağımsız olarak değerlendirilmesi için ileri araştırmalara ihtiyaç vardır.

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Cite This Article

Kanık, G., Kargın, Z., Şar, H., Mor, A. (2026). The Effect of Whey Protein Supplementation on Some Performance Parameters in Female Tennis Athletes. Yalova Üniversitesi Spor Bilimleri Dergisi, Cilt: 5 Sayı: 2, 60–80. https://ajindex.com/articles/1626758

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