Gülfem Ersöz

ORCID: 0000-0001-8813-3032
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About
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Research Areas
  • Sports Performance and Training
  • Sports injuries and prevention
  • Muscle metabolism and nutrition
  • Thermoregulation and physiological responses
  • Exercise and Physiological Responses
  • Sports and Physical Education Research
  • Body Composition Measurement Techniques
  • Physical Education and Training Studies
  • Genetics and Physical Performance
  • Occupational Health and Performance
  • Obesity, Physical Activity, Diet
  • Cardiovascular Effects of Exercise
  • Lower Extremity Biomechanics and Pathologies
  • Cardiovascular and exercise physiology
  • Sports Dynamics and Biomechanics
  • Cultural and Sociopolitical Studies
  • Liver Disease Diagnosis and Treatment
  • Physical Activity and Health
  • Injury Epidemiology and Prevention
  • Liver Disease and Transplantation
  • Children's Physical and Motor Development
  • Dermatoglyphics and Human Traits
  • Diet and metabolism studies
  • Coffee research and impacts
  • Health and Lifestyle Studies

Hacettepe University
2011-2025

Ankara University
2011-2021

Ankara Sosyal Bilimler Üniversitesi
2017

Hitit Üniversitesi
2016

State University of Physical Education and Sport
2016

Pamukkale University
2011

Başkent University
2011

Cukurova University
2009

Loughborough University
2009

Izmir University
2004

Heat stress may contribute to decreased match performance when football is played in extreme heat. This study evaluated activity patterns and thermal responses of players during soccer matches different environmental conditions. Non‐acclimatized ( n =11, 20±2 years) two conditions moderate heat (MH) high (HH) index. Core temperature T c ) physical were measured using a telemetric sensor global positioning system, respectively. The average ambient relative humidity MH 34±1 °C 38±2%; HH 36±0...

10.1111/j.1600-0838.2010.01219.x article EN Scandinavian Journal of Medicine and Science in Sports 2010-10-01

We investigated the cognitive effects of exercising in heat on field players two football teams a series three matches. Different rehydration and cooling strategies were used for one during last games. Cognitive functions measured before, immediately after each match, as well core temperature, body mass, plasma osmolality glucose levels, allowing an estimate their differential impacts cognition. The pattern results suggests that mild–moderate dehydration exercise (up to 2.5%) has no clear...

10.1111/j.1600-0838.2010.01220.x article EN Scandinavian Journal of Medicine and Science in Sports 2010-10-01

During a football match played in warm (34.3 ± 0.6 °C), humid (64 2% rh) conditions, 22 male players had their pre-match hydration status, body mass change, sweat loss and drinking behavior assessed. Pre-match urine specific gravity (1.012 0.006) suggested that all but three commenced the euhydrated. Players lost 3.1 L of 45 9 mmol sodium during 90-min replaced 55 19% losses hence by end game were 2.2 0.9% lighter. The water volume consumed was highly variable (1653 487 mL; 741-2387 mL)...

10.1111/j.1600-0838.2010.01218.x article EN Scandinavian Journal of Medicine and Science in Sports 2010-10-01

Abstract Purpose The purpose of this study is to investigate the relationship between selected physical-physiological parameters and efficiency pistol shooting. Design/methodology/approach In all, 237 male volunteers, studying at a Turkish Police Academy within age range 19-20 years old were investigated. physical fitness levels evaluated by valid reliable test batteries. shooting was total points bullets which hit target from 10 m. Findings Significant differences found sets students...

10.1108/pijpsm-03-2013-0034 article EN Policing An International Journal 2013-11-04

The purpose of the present study was to investigate relationship between body composition, anaerobic performance and sprint amputee soccer players. Fifteen players participated in this voluntarily. Subjects’ height, weight, mass index, fat percentage (Jackson Pollock formula) somatotype characteristics (Heath-Carter system) were determined. at 10m, 20m 30m evaluated, whereas counter movement jump (CMJ), relative CMJ (RCMJ), squat (SJ) SJ (RSJ) tests used for determination performance....

10.2478/v10078-012-0088-3 article EN Journal of Human Kinetics 2012-12-01

Caffeine is widely consumed among elite athletes for its well-known ergogenic properties, and ability to increase exercise performance. However, studies date have predominantly focused on the anhydrous form of caffeine in male participants. The aim study was investigate effect caffeinated coffee ingestion lower-upper body muscular endurance, cognitive performance, heart rate variability (HRV) female athletes. A total 17 participants (mean ± standard deviation (SD): age = 23 2 years, mass 64...

10.3390/nu13010002 article EN Nutrients 2020-12-22

The purpose of this study was to examine the influence different team formation methods on physiological responses and time-motion characteristics 4-a-side small-sided games (SSG4) in young soccer players. Thirty-two players (age 16.2 ± 0.7 years; height 172.9 6.1 cm; body mass 64.1 7.7 kg) voluntarily participated study. Anthropometric measurements, technical tests, maximum oxygen uptake (V[Combining Dot Above]O2max) tests were carried out SSG4 teams then created using 4 methods: according...

10.1519/jsc.0b013e318244341d article EN The Journal of Strength and Conditioning Research 2011-12-09

[Purpose] The main purpose of our study was the evaluation effects long-term volleyball practice on knee joint proprioception and balance young female athletes. [Subjects Methods] An observational case-control performed. enrolled 19 players in experimental group sedentary counterparts as controls. A Biodex system dynamometer were used for evaluations. paired t-test to determine significance differences between performance athletes [Results] analysis showed a significant difference at 60°...

10.1589/jpts.27.437 article EN Journal of Physical Therapy Science 2015-01-01

Objectives To evaluate the demographic, clinical, laboratory, and prognostic data of children with acute disseminated encephalomyelitis respect to anti-myelin oligodendrocyte glycoprotein (MOG) antibody status. Methods Acute patients (n = 245) from 24 centers followed up between 2010 2022 were evaluated retrospectively. The short- long-term outcome characteristics (disease severity course, clinical relapse, recovery rates) assessed. Incomplete was defined as modified Rankin Score ≥1 or...

10.1177/08830738251334219 article EN Journal of Child Neurology 2025-05-08

Carbohydrate (CHO) and caffeine (CAF) mouth rinsing have been shown to enhance endurance sprint performance. However, the effects of CHO CAF on muscular cognitive performance in comparison between male female athletes are less well-established. The aim this study was examine effect squat bench press 1 repetition maximum (1-RM) strength, 3 sets 40% 1-RM both athletes. Thirteen fourteen resistance-trained participants completed four testing sessions following 25 ml i) 6% (1.5 g); ii) 2% (500...

10.1186/s12970-021-00462-0 article EN cc-by Journal of the International Society of Sports Nutrition 2021-01-02

Bu çalışmanın amacı, genç futbolcuların bazı fiziksel uygunluk ve somatotip özelliklerinin oynadıkları mevkilere göre karşılaştırılmasıdır. Çalışmaya Ankara'da süper ligde yer alan bir takımın altyapısında 16 yaş grubunda futbol oynayan toplam 36 (defans (n=12), orta saha(n=12) forvet(n=12)) gönüllü sporcu katılmıştır. katılan deneklerin boy uzunluğu, vücut ağırlığı, deri kıvrım kalınlığı, çevre çap ölçümleri yapılmıştır. Vücut yağ yüzdesi Açıkada formulü ile hesaplanırken özellikler...

10.1501/sporm_0000000151 article TR Ankara Üniversitesi Beden Eğitimi ve Spor Yüksekokulu SPORMETRE Beden Eğitimi ve Spor Bilimleri Dergisi 2009-01-01

Objectives:The aim of this study was to examine the multi-instrument assessment physical activity in female office workers.Material and Methods: Fifty healthy women (age (mean ± standard deviation): 34.8±5.9years, body height: 158±0.4cm, weight: 61.8±7.5 kg, mass index: 24.6±2.7 kg/m 2 ) workers from same workplace volunteered participate study.Physical measured with 7-day Physical Activity Assessment Questionnaire (7-d PAAQ), an objective multi-sensor armband tool, also a waist-mounted...

10.13075/ijomeh.1896.00710 article EN cc-by-nc International Journal of Occupational Medicine and Environmental Health 2016-08-30

Normal growth in children is regulated to a great extent through the actions of GH/IGF-I axis, system consisting GH and its mediators (ternary complex) that modulate many tissues. The ternary complex (IGF-I/IGFBP-3/ALS) provides an acute regulatory mechanism which IGF-I may be mobilized from circulating reservoir 150 kDa complexes Acute exercise known stimulus for secretion. beneficial effects scheduled on body composition are also well established. However, impact strenuous pubertal...

10.1515/jpem.2004.17.6.895 article EN Journal of Pediatric Endocrinology and Metabolism 2004-01-01

This study aims to determine the body weight and hydration levels of wrestlers within cadet super league investigate their affects upon performance. Measurements were recorded four times: on first day training, which is 17 days prior competition, three out from weigh ins, immediately weigh-in before competition. During these periods, urine specific gravity (Usg) measured. Body composition was measured in round testing. Results measurements compared competition results. did not change...

10.1080/21615667.2011.10878925 article EN International Journal of Wrestling Science 2011-09-01

Amerikan futbolu, ragbi, boks, kick boks (K1) ve bu sporlara benzer temas sporlarında, beyin sarsıntısı riski darbeler çarpışmalardan dolayı çok fazla görülmektedir. Oluşan sarsıntıları, taşıdığı riskler tedavi yöntemleriyle ilgili bilgiler sınırlıdır. Araştırmanın amacı, sarsıntısının nedenleri-sonuçları, bazı sporlardaki etkileri sakatlanma oranlarını inceleyip, yapılan araştırmalarla derleme sunabilmektir. Çalışmada, PubMed, Google Scholar, Ankara Kırıkkale Üniversitesi veri tabanları,...

10.33689/spormetre.792020 article TR Ankara Üniversitesi Beden Eğitimi ve Spor Yüksekokulu SPORMETRE Beden Eğitimi ve Spor Bilimleri Dergisi 2020-12-16

Bu çalışmanın amacı, literatürdeki çalışmalara dayanarak Wingate Anaerobik Güç Testi (WAnT) için en uygun optimal yükün belirlenmesidir. WAnT İsrail’de, Beden Eğitimi ve Spor Enstitüsü’nün Araştırma Sağlığı Bölümü’nde 1970’lerde geliştirilmiştir. İlk prototipi sunulduğundan beri tüm dünyada birçok laboratuarda kas gücünü, dayanıklılığını yorgunluğunu belirlemekte kullanılan bir test olarak kabul görmektedir (1). uygulaması basit, özel becerili personel gerektirmeyen, ucuz kolay edinilebilir...

10.1501/sporm_0000000193 article TR Ankara Üniversitesi Beden Eğitimi ve Spor Yüksekokulu SPORMETRE Beden Eğitimi ve Spor Bilimleri Dergisi 2011-01-01
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