Özkan Güler

Prof. Özkan Güler

Ankara university, Faculty of Sport Sciences
orcid

Research Focus & Metrics

Academic Career Length

9Years (2018-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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Fatma Nese SahinFatma Nese Sahin
Fatma Nese Sahin
LEVENT CEYLANLEVENT CEYLAN
LEVENT CEYLAN
Hamza KüçükHamza Küçük
Hamza Küçük
TCTülay Ceylan
Tülay Ceylan
Gökhan ArıkanGökhan Arıkan
Gökhan Arıkan
ÖGÖzkan Güler
Özkan Güler
The foot absorbs shocks with its arches, muscles, ligaments and joints, and bodyweight transmission and it pushes the body forward during all movement patterns. Pes planus is more important in sports activities that include balance and sports performance, such as walking, running, jumping, or transferring weight to a single lower limb. This study, conducted with this information in mind, aims to examine the effects of pes planus deformity on balance and vertical jump performance. Fifty athletes were included in the study. The presence of pes planus was evaluated according to the Feiss line. Balance measurements were performed with a Balance System SD Biodex. Vertical jump performance was recorded using an Omegawave jumping mat. The relationship between the pes planus grades of the participants and their balance and jump performances was analyzed using the Spearman correlation method. Vertical jump and Limit of stability (LOS) was significantly correlated with pes planus.

28 April 2020 in Frontiers in Psychology
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Journal Article
Open access
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Ambra GentileAmbra Gentile
Ambra Gentile
SBStefano Boca
Stefano Boca
FŞFatma Neşe Şahin
Fatma Neşe Şahin
ÖGÖzkan Güler
Özkan Güler
Simona PajaujieneSimona Pajaujiene
Simona Pajaujiene
MAMarianna Alesi
Marianna Alesi
Purpose: The effects of physical exercise on executive functions (EFs) are well-documented. EFs are involved in daily activities, and their development determines the quality of people’s future life, both in terms of mental health and quality of life. The purpose of the current paper is to evaluate the effects of a physical education program, elaborated within the Enriched Sports Activity Program (ESA Program), an Erasmus + Project, on EFs, namely, visuospatial working memory, inhibitory control, cognitive flexibility, and task switching. Method: Data were collected on November 2017 (t1) and May 2018 (t2). At t1, a sample of 357 children from four European countries (Italy, Germany, Lithuania, and Turkey) performed a cognitive test battery made up of Digit Span Forward/Backward, Stroop Task, and Trail Making Test (TMT), whose order was randomized. From November until May, classrooms from the experimental group followed the ESA Program, while classrooms from the control continued with the ordinary physical education class. At t2, children from both experimental and control groups performed again the cognitive battery. Result: The repeated measures ANOVA showed a significant effect of the ESA Program on the TMT B and on Digit Span Backward, but no significant effects were found on Digit Span Forward and Stroop Task. Conclusion: The introduction of a sport program enriched with cognitive stimuli has beneficial effects for children working memory and cognitive flexibility.

Ewan ThomasEwan Thomas
Ewan Thomas
Antonino BiancoAntonino Bianco
Antonino Bianco
GTGarden Tabacchi
Garden Tabacchi
Carlos SilvaCarlos Silva
Carlos Silva
Nuno LoureiroNuno Loureiro
Nuno Loureiro
Antonio PaoliAntonio Paoli
Antonio Paoli
Background: Physical fitness in youth is a predictor of health in adulthood. The main objective of the present study was to understand if an enriched sport activity program could increase physical fitness in a population of schoolchildren. Methods: In a sample of 672 children aged 10.0 ± 1.90 years, different motor skills were tested by the 1 kg and 3 kg ball throw (BT), the standing broad jump (SBJ), the 30 m sprint (30mS), the leger shuttle run (LSR), the illinois agility test (IGT), and the quadruped test (QT). Within the controlled-trial, the intervention group (ESA) underwent an additional warm-up protocol, which included cognitive enhancing elements, for 14 weeks while the control group continued with ordinary exercise activity. Results: A significant increase was present regarding the 1 kg and 3 kg BT, the SBJ, the 30mS, and the IGT, while no significant difference was shown regarding the QT and the LSR in the ESA group between pre and post intervention. In the control group, no differences were present for any test except for the QT and the LSR post-test. Conclusion: A 14-week structured physical intervention had moderate effects regarding throwing, jumping, sprinting, and agility in a sample of schoolchildren.

ÖGÖzkan Güler
Özkan Güler
DADicle Aras
Dicle Aras
FIRAT AKCAFIRAT AKCA
FIRAT AKCA
Antonino BiancoAntonino Bianco
Antonino Bianco
GLGioacchino Lavanco
Gioacchino Lavanco
Fatma Nese SahinFatma Nese Sahin
Fatma Nese Sahin
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 efforts against a resistance equivalent to 0.075 kg/body mass for 30 s with three-minute rest intervals. In aerobic exercise, subjects performed the Bruce protocol on a motorized treadmill. After each exercise, subjects subsequently performed a single-leg stability test and then repeated the same test for four times with five-minute passive rest periods. In accordance with the results, it was found that the impairment observed right after the aerobic loading was higher (p < 0.001) compared to the anaerobic one. However, the time-related deterioration in both aerobic and anaerobic loadings was similar. The B-pre value was lower than Bpost and B5 (p < 0.01) and B10 (p < 0.05) in both conditions. Subjects could reach the initial balance level at B15 after aerobic and anaerobic loadings. The lactate level did not reach resting value even after 20 min of both fatigue protocols. Although the fatigue after aerobic and aerobic exercise negatively affects a single-leg dynamic balance level, single leg balance ability returns to the baseline status after 10 min of passive recovery duration.

21 January 2021 in Sustainability
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Open access
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ÖGÖzkan Güler
Özkan Güler
OTOguzhan Tuncel
Oguzhan Tuncel
Antonino BiancoAntonino Bianco
Antonino Bianco
Functional movement deficiencies cause falls and injuries in adults. Functional strength training (FST) is emerging as a new training method for athletes, middle-aged and older adults, to improve functional movement: The present study was conducted in order to investigate the effects of FST on balance and functional movement in healthy and independent middle-aged adults. The sample for this study consisted of 46 physically active individuals (24 female and 22 male). A total of 46 subjects were divided based on randomly into the functional strength training (FST) group (n = 26) aged: 51.55 ± 3.73 years; height: 168.69 ± 8.8 cm; body mass: 75.88 ± 12.18; and traditional strength training (TST) group (n = 20) age: 52.85 ± 4.01; height: 166.9 ± 9.98; body mass: 76.15 ± 10.45. Each group performed 24 sessions of a training protocol three-time a week. The functional movement was assessed using the functional movement screen (FMS) protocol. Balance performance was determined by using the balance error scoring system (BESS). Bodyweight and body fat ratio were measured using bioelectric impedance. There was a significant statistical difference between FMS total scores after an eight-week FST in the FST group. After the intervention, the functional strength group tended to have significantly better balance control than the traditional strength group (p = 0.01). Statistically, significant differences were observed between pre-test and post-test in the intervention group on BMI, body fat, and body mass (p = 0.01). There were not found significant differences in balance control and FMS score in TST group. As a result of this study, FST positively affected the FMS total score and balance performance in middle-aged adults. Early detections of the deficiencies in functional movement and balance in the middle ages may reduce the risk of insufficiency and fall in adults through targeted functional strength training intervention.

5 February 2025 in Life
Verified
Journal Article
Open access
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EÇErdem Çakaloğlu
Erdem Çakaloğlu
HYHidayet Suha Yuksel
Hidayet Suha Yuksel
Fatma Nese SahinFatma Nese Sahin
Fatma Nese Sahin
ÖGÖzkan Güler
Özkan Güler
Erkal ArslanoğluErkal Arslanoğlu
Erkal Arslanoğlu
Hamza KüçükHamza Küçük
Hamza Küçük
There is growing interest in examining acute effects of exercise on cognitive functions and neurocognitive outcomes. These behavioral and neurocognitive outcomes have been most frequently investigated in healthy young individuals, but relatively few studies have examined healthy older adults. This study aimed to systematically review the effects of acute moderate-intensity aerobic exercise (MIAE) on core executive functions, including inhibition, working memory, and cognitive flexibility, in healthy older adults. A database search of PubMed, Scopus, and Web of Science was conducted using a systematic search strategy. Acute MIAE interventions assessing core executive functions using randomized or stratified controlled trials investigating healthy older adults were reviewed. Eleven studies were identified, and the behavioral results from all included studies revealed that acute MIAE can improve core executive functions in healthy adults. However, incompatible results were observed in activated areas of the prefrontal cortex following MIAE in older adults. The limited number of studies investigating the effects of MIAE on core executive functions in older healthy adults with moderate overall quality restricts the conclusions. Therefore, more robust quality studies using neuroimaging techniques to investigate core executive functions, especially working memory and cognitive flexibility, are needed to explain the neural and behavioral mechanisms.