KAFEİN TAKVİYESİNİN KISA SÜRELİ YÜKSEK YOĞUNLUKLU EGZERSİZE ETKİSİ: KAFEİN ALIM ZAMANI

Year 2019, Volume: 10 Issue: 1, 31 - 43, 19.04.2019

Zülkif Kara Halil Taşkın , Nurtekin Erkmen , Dede Baştürk

https://doi.org/10.17155/omuspd.457212

Abstract

Araştırmada, yüklenmeden 60 dk ve 120 dk önce gerçekleştirilen kafein
takviyesinin kısa süreli yüksek yoğunluklu performansa etkisinin tespit
edilmesi amaçlanmıştır. On iki amatör erkek futbol oyuncusu (yaş: 22,69 ± 2,16 yıl, boy uzunluğu: 174,0 ± 7,12 cm, vücut ağırlığı: 70,55 ± 8,76 kg, spor deneyimi: 5,92 ±
2,96 yıl) araştırmaya katılmak
için gönüllü olmuştur. Katılımcılar 2 farklı zamanda kafein takviyesi ve
plasebo (PL) koşulu olmak üzere rastgele olarak 3 deney koşulunda araştırmaya
dahil edildiler. Kafein takviyesi, ölçümlerden 60 dk önce (KAF60) ve 120 dk
önce (KAF120) olacak şekilde gerçekleştirilmiştir. Her bir deney koşulu
arasında en az 3 gün ara verilmiştir. PL koşulunda katılımcılara sadece su
verilmiştir. KAF60 ve KAF120 koşulları için katılıcılara 250 ml suya
karıştırılmış olarak 6 mg/kg toz formundaki kafein takviyesi yapıldı. Her bir
deney koşulu için 5 m, 10 m, 20 m ve 30 m sürat, çeviklik, dikey ve yatay
sıçrama testleri uygulanmıştır.
Futbolcuların PL, KAF60 ve KAF120 koşullarında sürat performansları, çeviklik,
dikey sıçrama ve eller belde durarak uzun atlama mesafelerinin istatistiksel
olarak anlamlı farklılık göstermediği tespit edilmiştir (p > 0,05). KAF60 ve
KAF120 gruplarının PL grubundan, KAF120 grubunun ise KAF60 grubundan daha yüksek
eller serbest durarak uzun atlama mesafesine sahip oldukları belirlenmiştir (p
< 0,05). Sonuç olarak; kafein takviyesinin amatör futbol oyuncularının kısa
süreli yüksek şiddetli aktivitelerdeki performansını değiştirmediği, kafeinin
yüklenmeden 60 dk veya 120 dk önce yapılmasının herhangi bir etkiye sahip
olmadığı söylenebilir.

Keywords

Çeviklik, futbol, güç, kafein alımı, sürat

EFFECTS OF CAFFEINE INTAKE ON SHORT-TERM HIGH-INTENSITY EXERCISE: CAFFEINE INTAKE TIME

Abstract

This study aimed to find out the effect of caffeine
supplement 60 min and 120 min before loading on short-term high-intensity
performance. Twelve male football players volunteered to participate in the
study (age: 22.69 ± 2.175 years, height: 174 ± 7.118 cm, weight: 70.55±8.760
kg, sporting experience: 5,92 ± 2,96 years). The participants
were included in the study randomly under three experimental conditions
consisting of caffeine supplement and placebo (PL) at two different times.
Caffeine supplement was carried out as 60 min before measurements (CAF60) and
120 minutes before measurements (CAF120). An interval of at least three days
was given in between each experimental condition. In PL condition, the
participants were given only water. In CAF60 and CAF120 trial conditions, caffeine
supplement as powder mixed with water – 6 mg/kg for per body weight- was given
to players. Sprint test (5/10/20/30m), vertical jumps and standing broad
jumps with / without the arm-swing, and agility test were applied to the
players for
each experimental conditions. Repeated measures ANOVAs were conducted to compare the
experimental conditions. No significant difference was found in sprint
performance, agility, vertical jumps, and standing broad jump with hands on
hips among PL, CAF60 and CAF120 (p > 0.05). 
Standing broad jump with hands free was higher in CAF60 and CAF120 than
PL (p < 0.05). Also, subjects in CAF120 had higher performance in standing
broad jump with hands free than CAF60 (p < 0.05). In conclusion; results of
the study revealed that caffeine intake did not change the performances of
amateur players in short-term high-intensity activities. Also, the results
suggest that taking caffeine 60 min or 120 min before exercise does not have an
effect on performance in high-intensity activities.

Keywords

Agility, caffeine ingestion, football, high intensity effort, sprint, power

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