Firat Akca

Firat Akca
  • PhD
  • Professor at Ankara University

About

58
Publications
31,992
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444
Citations
Introduction
Lecturer and researcher in exercise physiology and nutrition. Former international athlete and coach in rowing and sprint kayak.
Current institution
Ankara University
Current position
  • Professor
Additional affiliations
December 2015 - April 2022
Ankara University
Position
  • Professor (Associate)
Education
April 2010 - April 2011
Oxford Brookes University
Field of study
  • Sport Physiology and Nutrition

Publications

Publications (58)
Article
Full-text available
Authors submitted their contribution of the article to the editorial board. Accepted for printing The aim of this research was to develop different regression models to predict 2000 m rowing ergometer performance with the use of anthropometric, anaerobic and strength variables and to determine how precisely the prediction models constituted by diff...
Article
Full-text available
To examine the effects high intensity interval training (HIT) and supramaximal interval training (SMIT) on indoor rowing performance; 20 male lightweight collegiate rowers (age= 21.77±2.35 years, height= 178.4±6 cm, body mass= 69.6±3.1 kg,) participated in the study. Baseline testing involved a 2000 m time trial and incremental exercise test to det...
Article
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This study aimed to compare the effects of coach encouragement during the on-court tennis training drills (OTDs) on the psychophysiological and performance responses of young tennis players. Twenty-five young male tennis players (14.0 ± 0.3 years of age) performed six bouts of each of the four common OTDs; Star, Suicide, Box and Big X (30:60 s; 1:2...
Article
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Caffeine is widely consumed among elite athletes for its well-known ergogenic properties, and its ability to increase exercise performance. However, studies to date have predominantly fo-cused on the anhydrous form of caffeine in male participants. The aim of the study was to investigate the effect of caffeinated coffee ingestion on lower-upper bod...
Article
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Simple Summary Small-sided games are very popular training methods, among other commonly used strategies, for enhancing the functional and sport-specific skills of young soccer players. In addition, high-intensity interval training has the potential to increase the aerobic capacity of youths. No study has compared the order effects of combined smal...
Conference Paper
Full-text available
Fibromyalgia Syndrome (FMS) is a syndrome characterized by widespread and chronic musculoskeletal pain, which may be accompanied by sleep disturbance, fatigue, morning stiffness and cognitive impairment.FMS impairs the quality of life and causes loss of workforce and high medical expenses by preventing the person from daily life. The diagnostic cri...
Article
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Kafeinin fizyolojik ve psikolojik etkileri hususunda tüm sorular henüz yanıtlanamamıştır. Fakat sporcuların farklı fizyolojik belirteçler ve uyku kalitesine etkileri bilinmektedir. Bu çalışmada, futbolcularda aerobik kapasite ve algılanan uyku kalitesinde plasebo sakızının farklı dozları kullanıldığında oluşan değişikliklerin incelemesi amaçlanmışt...
Article
z Sedanter yaşam tarzındaki artış daha fazla kadının hamileliğe aşırı kilolu veya obez olarak girmesine yol açmakta ve birçoğu hamilelik sırasında da aşırı kilo almaktadır. 2011-2014 yılları arasında yapılan bir araştırmada doğurganlık çağındaki (20-39 yaş arası) ABD'li kadınların %34,4'ünün fazla kilolu veya obez olduğu görülmüştür. 2016 yılında d...
Article
Full-text available
Sedanter yaşam tarzındaki artış daha fazla kadının hamileliğe aşırı kilolu veya obez olarak girmesine yol açmakta ve birçoğu hamilelik sırasında da aşırı kilo almaktadır. 2011-2014 yılları arasında yapılan bir araştırmada doğurganlık çağındaki (20-39 yaş arası) ABD’li kadınların %34,4’ünün fazla kilolu veya obez olduğu görülmüştür. 2016 yılında doğ...
Conference Paper
Full-text available
Son yıllarda egzersize olası etkileri ile dikkatleri üzerine toplayan polifenollerin; performansa, antrenmana, adaptasyona, toparlanmaya ve bağışıklık fonksiyonuna birçok olumlu etkisi olduğu saptanmıştır. Bu derleme çalışması, polifenollerin spor performansı üzerine etkilerini mevcut literatür ışığında özetlemeyi amaçlamaktadır.
Article
Full-text available
This study aimed to investigate the anthropometric and somatotype characteristics, explosive power and agility characteristics of tennis-player and sedentary girls and boys age between 10-12. Participants were separated by gender and formed as experımental group (EG) and control group CG). Body weight (BW), body mass index (BMI), body fat percentag...
Article
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This study aimed to investigate the effects of the 6-week small-sided games training (SSGs) vs. high-intensity interval training (HIIT) on the psychophysiological and performance responses, and technical skills of young basketball players. Thirty-two male players (age: 14.5 0.5 years of age) were randomly divided into SSGs group (n = 16) and HIIT g...
Article
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Carbohydrate (CHO) mouth rinse has been shown to enhance aerobic endurance performance. However, the effects of CHO mouth rinse on muscular strength and endurance are mixed and may be dependent on dosage of CHO. The primary purpose was to examine the effects of different dosages of CHO rinse on strength (bench press 1 repetition maximum [1-RM]) and...
Article
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Futbol günümüzde yaklaşık 270 milyon kişi tarafından profesyonel veya rekreasyon amacı ile oynan ve sakatlık sıklığı en yüksek olan sporlardan bir tanesidir. Fonksiyonel Hareket Analizi (FMS) zayıf nöromusküler kontrolün, akut yaralanma riskini arttırdığı düşünüldüğü için sporcularda hareket paterni kalitesini değerlendirmek amacıyla kullanılan bir...
Article
Full-text available
Sixteen female soccer players (age = 20.19 ± 1.52 years; body mass = 56.52 ± 4.95 kg; body height = 164.81 ± 4.21 cm) with no history of lower extremity injury participated in the study. The Biodex SD Balance system was used to determine the non-dominant single-leg stability. In anaerobic exercise, each subject performed four maximal cycling effort...
Article
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Abstract Purpose: Electromyostimulaiton (EMS) has been used for both physical therapy and strength improvements for a few decades. This study aimed to investigate the effects of a four-week local-EMS training performed on a fingerboard (FT) in wrist strength and endurance. Material: Sixteen physically active, non-climber students were divided into...
Article
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Öz: Bilişsel yorgunluk (BY) egzersiz ve sporda performansa etki eden faktörlerden biri olarak değerlendirilmektedir. Bu derlemenin amacı bilişsel yorgunluk kavramını, bilişsel yorgunluğun nasıl oluşturulduğunu, nasıl değerlendirildiğini açıklamak ve konuyla ilgili çalışmaların sonuçlarını tartışmak ve böylece gelecekteki araştırmalar için önerilerd...
Article
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Öz: Son yıllarda aktif kaslara oksijen taşınmasını artırmaya yönelik beslenme uygulamalarından yüksek nitrat içeriği dolayısı ile kırmızı pancar suyu ön plana çıkarak spor beslenmesinde popülerliğini arttırmaya başlamıştır. Literatürdeki çalışmalar kırmızı pancar suyu tüketiminin çeşitli spor dallarında performansı arttırdığını ve genel toplum sağl...
Article
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Öz: Yetenek seçimi birçok parametreyi içeren karmaşık bir süreçtir ve yetenek seçim modelinin spora özgü uyarlanması gereklidir. Bu araştırmanın amacı Türkiye Dağcılık Federasyonu (TDF) Spor Tırmanış Sporcu Tarama Komisyonu tarafından geliştirilen, spor tırmanış yetenek seçimi test bataryasının (STYSTB) uygulanmasıydı. Bununla birlikte sporcuların...
Article
Full-text available
Purpose: In order to sustain the performance in sport, it is necessary to constantly struggle with the factors which disrupt balance, and maintain the desired balance. The purpose of the present study is to compare and demonstrate the effects of sight grade on static and dynamic balance, and fall risk parameters in visually impaired and non-impaire...
Article
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Background: The aim of the current paper was to compare the anxiety and sensation seeking levels of the mountaineers in the urban environment and at the extremely high altitude. Material and methods: A total of seven male mountaineers participated in the study voluntarily. The participants filled out the Sensation Seeking Scale-Form V (SSS-V, 1994...
Article
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In recent years, the repeated sprint ability (RSA) training has become more popular method as top-up training in team sports. This training method has also been applied in the hypoxic condition, named repeated sprint training in hypoxia (RSH). Even though there are some studies reporting that there is no effect on RSA performance in normobaric cond...
Article
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Besides being an important factor in preventing musculoskeletal injuries in daily life, the sport of rock climbing affects balance as well. Hence, the purpose of the study was to compare the postural balance level between experienced sport climbers and sedentary adults. A total of 10 advanced sport climbers and 10 sedentary adults participated in t...
Article
Introduction: Citrulline malate supplementation has been shown to increase strength performance, but data for females is limited. Likewise, the data about the effects of capsaicin on humans is very limited, especially for females. There is a recent investigation that shows the positive effects of capsaicin supplementation on strength performance of...
Article
Introduction: Though the effects of capsaicin on performance rarely studied on human subjects, there is a large evidence about the positive effects of caffeine on performance. Potential synergistic effects of using caffeine-capsaicin combination is yet to be researched in humans. Therefore, the aim of this study was to compare the acute supplementa...
Article
Full-text available
In order to investigate the effects of different warm-up conditions on one repetition maximum (1RM) bench press performance, eleven highly trained male sprint kayakers completed 1RM bench press tests after 4 different general warm-up condition with a standardized bench press specific warm-up. The workloads of the warm-up protocols were individually...
Article
Full-text available
Probiyotiklerin sağlığımız için faydalı olma potansiyeline sahip olduğuna dair kanıtlar bulunmaktadır. Probiyotiklerin, bağırsak mikrobiyatasında yaratılan olumlu değişimlerle ilişkili olduğu, bağışıklık sistemi modülasyonu ve metabolik etkileri aracılığıyla pek çok diğer fonksiyonda da gelişme sağladığı bildirilmiştir. Bu çalışmanın amacı; probiyo...
Article
Full-text available
In order to investigate the effects of different warm-up protocols on one repetition maximum (1RM) leg press performance, 23 rowers (age 21.48±3.12 years, height 185.17±8.22 cm, body mass 83.86 ±8.7 kg.) completed 1RM leg press tests after four different general warm-up conditions with a standardized specific warm-up. The workloads of the warm-up p...
Article
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Öz: Kafein dünya genelinde en yaygın olarak kullanılan besin maddeleri ve besin takviyelerinden biridir. Kafein tüketiminin büyük oranı kahve yoluyla olmakla birlikte birçok başka gıda, ilaç ve içecekte de kafein bulunmaktadır. Kafein son dönemde kullanımı yaygınlaşan enerji içeceklerinin de etken maddesi olarak işlev görmekte ve fizyolojik etkiler...
Article
Full-text available
Abstract: The purpose of this study was to determine the percentage of domestic players produced by the youth academies of their recent teams playing in Turkish Football Super League. In addition, other domestic player sources of Turkish Super League Teams were determined. The official data about teams in Turkish Super League was obtained from the...
Article
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ZET Çalışmanın amacı tenisçilerin bazı fiziksel parametreleri, antropometrik ve somatotip özelliklerinin, servis hızı ve Türkiye klasman sıralaması ile arasındaki ilişkiyi incelemektir. Bunun için boy, vücut ağırlığı, deri kıvrım kalınlığı, servis hızı, çeşitli çap ve çevre ölçümleri alınmıştır. Çalışmaya 10-12 yaş grubu aralığında 26 erkek ve 14 k...
Article
The purpose of this study was to compare values of aerobic performance in the 1-mile run test (1-MRT) using different formulae. Aerobic capacities of 351 male volunteers working for the Turkish National Police within the age range of 20-23 years were evaluated by the 1-MRT and the 20-metre shuttle run (20-MST). VO2max values were estimated by the p...
Conference Paper
Full-text available
THE EFFECT OF CARBOHYDRATE INTAKE AFTER INTENSE PHYSICAL ACTIVITY ON HEART RATE VARIABILTY Dicle Aras, Fırat Akça School of Physical Education and Sports, Ankara University, Ankara, TURKEY / diclearasx@gmail.com Aim: The effect of carbohydrate (CHO) intake on heart rate variability (HRV), after %70 intensity running exercise has been investigat...
Conference Paper
Full-text available
THE EFFECT OF CREATINE MONOHYDRATE SUPPLEMENTATION ON FUNCTIONAL ANAEROBIC POWER, STRENGTH AND BODY COMPOSITION IN COLLEGIATE ROWERS Fırat Akça, Dicle Aras School of Physical Education and Sports, Ankara University, Ankara, TURKEY / firatakca@gmail.com Aim: To investigate the effect of creatine (CR) supplementation on body composition, strength...
Conference Paper
Full-text available
The aim of this study was to demonstrate and compare physiological performance and different anaerobic threshold determination methods in rowers. 18 rowers participated in this study voluntarily (age 17.38±0.6 years). Besides the measurements of height and weight, subjects performed 2000 meter maximal rowing ergometer test and incremental rowing er...
Article
Full-text available
The purpose of this study was to determine physical fitness and somatotype characteristics of Turkish National Police. A total of 351 male police from a Turkish General Directorate of Security participated in this study voluntarily ( :21.49±1.06 yrs). Subjects’ height, body weight, body mass index, body fat percentage and somatotype characteristics...
Conference Paper
Full-text available
The purpose of the present study was to determine the role of Body Composition, Somatotype, Anaerobic Performance and Maximal Oxygen Consumption capacity in Turkish National police. 351 male police from Turkish General Directorate of Security participated in this study voluntarily ( :21.49±1.06 yrs). For the determination of Body Composition, Body...
Conference Paper
Full-text available
Many leading health problems are caused by physical inactivity and the consequences of consuming more calories than expended. The aim of this study was to demonstrate the relationships between body composition and daily energy expenditure and physical activity level in children. 80 children (43 male) voluntarily participated in this study (age: 10....
Article
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ET T A Am ma aç ç: : Bu çalışmada; kürekçilerde anaerobik eşiğin belirlenmesi için Ventilasyon eşiği (VE) ve Laktat eşiğine (LE) verilen fizyolojik cevapları karşılaştırmak, aralarındaki ilişkileri belirlemek ve birbirleri yerine kullanılabilirliklerini araştırmak amaçlanmıştır. G Ge er re eç ç v ve e Y Yö ön nt te em ml le er r: : Çalışmaya 12 kür...
Article
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ZET Bu çalışmada elit genç kürekçilerin laktat ve oksiken tüketimi profillerini analiz ederek ortaya koymak amaçlanmıştır. Çalışmaya 10 elit genç kürekçi gönüllü olarak katılmıştır (yaş 18.8±2.1 yıl). Denekler boy ve vücut ağırlığı ölçümlerinin yanısıra, Avustralya Spor Enstitüsü'nün önerdiği yedi aşamalı kürek ergometresi testini tamamlamışlardır....
Conference Paper
Full-text available
Bu araştırmanın amacı; Türkiye Futbol Süper Ligi takımlarının kadrolarında yer alan profesyonel statüsündeki futbolcuların ne kadarının takımların kendi altyapılarından yetiştiği ve kendi altyapılarından yetişmemiş diğer futbolcuların altyapı eğitimlerini hangi lig seviyesindeki takımlarda tamamladıklarının belirlenmesidir.
Article
Full-text available
The aim of this study was to investigate some physical and strength characteristics and relationships of these characteristics with performance of Turkish national flatwater kayak team male athletes. Eleven male Turkish national team paddlers, mean (SD) age 21,5 (2,16) years old, participated in this investigation. Testing was conducted over 5 days...
Article
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Bu araştırma yaşları 21.5 ± 2.16 olan 11 büyük erkekler kategorisinde yarışan Türkiye kano milli takımı durgunsu kayak sporcusunun somatotip özelliklerinin belirlenmesi amacıyla gerçekleştirildi. Araştırma grubunun somatotip özelliklerinin belirlenmesinde Heath-Carter metodu, vücut yağ yüzdesinin hesaplanmasında Siri formülü, Siri formülünün uygul...

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