Yazar "Atar, Ozdemir" seçeneğine göre listele

Listeleniyor 1 - 7 / 7
  • [ X ]
    Öğe
    Isokinetic knee strength as a predictor of cardiorespiratory responses during loaded aerobic capacity test in elite athletes
    (Nature Portfolio, 2025) Car, Bekir; Kurtoglu, Ahmet; Atar, Ozdemir; Turkmen, Musa; Eken, Ozgur; Soyler, Mehmet; Aldhahi, Monira I.
    This study aimed to investigate the predictive capacity of knee isokinetic strength parameters on cardiorespiratory responses during aerobic capacity test (ACT). It provides novel insights into the interplay between muscular strength and cardiorespiratory function through comparative analyses of loaded and unloaded ACT protocols in elite athletes. Thirty elite modern pentathlon athletes (age: 21.43 +/- 0.77 years) underwent isokinetic knee strength assessments at angular velocities of 60 degrees/s and 240 degrees/s. Cardiorespiratory parameters-average breath volume (ABV), average breath frequency (ABF), auxiliary oxygen density (AOD), and heart rate (HR)-were recorded during the Bruce Protocol conducted under two conditions: unloaded and with a 10 kg loaded vest. Relationships between isokinetic strength metrics and cardiorespiratory parameters were analyzed using linear regression models. There were no significant differences in ABV, ABF, or AOD between loaded and unloaded ACT conditions (p > .05). However, HR was significantly lower during loaded ACT (p < .05). Linear regression revealed that at 60 degrees/s, several knee strength parameters, including peak torque extension (PT-EXT), peak torque flexion (PT-FLX), total work flexion (TW-FLX), average power flexion (AP-FLX), and agonist strength (AGANT), significantly predicted ABV during loaded ACT (R-2 = 0.804, p = .004). A similar pattern was observed at 240 degrees/s, where comparable predictors explained a significant variance in ABV (R-2 = 0.761, p = .012). No significant predictive relationships were identified during unloaded ACT. Isokinetic knee strength parameters significantly predict cardiorespiratory responses during loaded ACT but not during unloaded protocols. These findings suggest that isokinetic strength assessments may be a valuable tool for optimizing ACT prescription and monitoring training adaptations in elite athletes.
  • [ X ]
    Öğe
    Persistent neuromuscular deficits in the posterior kinetic chain following hamstring strain injury: EMG insights from nordic hamstring curl, kettlebell swing, and supine sliding leg curl
    (Bmc, 2025) Gulgosteren, Erkan; Yuksel, Oguzhan; Gurol, Baris; Yildirim, Onur; Atar, Ozdemir; Soylu, Caglar; Altundag, Emre
    Background Hamstring strain injuries (HSIs) are among the most common non-contact injuries in football, often resulting in prolonged rehabilitation, high recurrence rates, and persistent neuromuscular deficits. Although rehabilitation focuses on restoring strength and flexibility, alterations in posterior chain muscle activation patterns may remain undetected, potentially contributing to reinjury risk. This study aimed to compare posterior chain muscle activation patterns between football players with a history of hamstring injury and healthy controls during three functional exercises: Nordic Hamstring Curl (NHC), Kettlebell Swing (KS), and Sliding Single-Leg Curl (SSLC). Methods Forty-two male football players (mean age: 23.4 +/- 3.1 years; 21 previously injured, 21 healthy controls) participated in the study. Surface electromyography (sEMG) was used to record activation of the biceps femoris long head (BF), gluteus maximus (GM), latissimus dorsi (LD), and iliocostalis lumborum (IL) during each exercise. Results Mean activation values were Across all exercises, injured players demonstrated significantly lower muscle activation compared with healthy controls. In NHC, BF (- 23.9%, p < 0.001), GM (- 21.3%, p < 0.001), LD (- 15.4%, p = 0.005), and IL (- 14.6%, p = 0.001) activations were reduced in the injured group. During KS, reductions were observed in BF (- 28.7%, p < 0.001), GM (- 24.3%, p < 0.001), LD (- 17.3%, p = 0.008), and IL (- 16.8%, p = 0.007). In SSLC, BF (- 20.8%, p < 0.001), GM (- 19.7%, p < 0.001), LD (- 12.5%, p = 0.008), and IL (- 15.8%, p = 0.004) activations were significantly lower in injured participants. Conclusion The largest differences were found in BF and GM during hip-dominant exercises, with consistent but smaller deficits in LD and IL, indicating a widespread neuromuscular inhibition beyond the hamstring itself. Conclusions: Football players with a history of hamstring injury present persistent deficits in posterior chain muscle activation, particularly in BF and GM, even after return to play. These impairments extend to trunk musculature (LD, IL), suggesting that rehabilitation should incorporate multi-segmental posterior chain retraining, especially in hip-dominant tasks, to mitigate reinjury risk. Clinical trial registration: The clinical trial was registered retrospectively on 09 June 2025 under the identifier NCT07171385.
  • [ X ]
    Öğe
    THE EFFECT OF AEROBIC EXERCISES ON THE PHYSICAL AND PSYCHOLOGICAL CONDITIONS OF MOTHERS OF CHILDREN WITH CEREBRAL PALSY
    (Univ Ljubljana, 2022) Yeniay, Sibel; Atar, Ozdemir; Ozen, Gokmen; Koc, Hurmuz
    The aim of study is to examine the physical and psychological effects of aerobic exercises applied to mothers of children with CP. The study was conducted with 27 mothers of children with CP and diagnosed with Spastic Quadriplegia. During exercises, muscular strength, muscular endurance, flexibility and cardiac exercises were applied. The SF-36 Quality of Life Scale was used to obtain health-related data. In order to measure muscle strength, manual muscle test and dynamometer measurements were used. Before and after the exercises, which were held three days a week for 8 weeks, measurements were made. T-test for dependent groups was performed in order to identify the difference between measurements. According to SF-36 Quality of Life Scale, significant differences were observed in terms of the variables of physical function, physical role difficulty, pain, vitality, social functionality, mental health, emotional role difficulty, and perception of general health (p < 0.05). Moreover, it was determined that the difference between the variables of the leg, back and left-hand grip was significant p < 0.05, but the difference in the measurement of the right-hand grip was not significant (p > 0.05). When the pretest and posttest scores obtained from the manual muscle test were compared, significant differences were determined in right arm supination, left arm supination, right arm pronation, and left arm pronation (p < 0.05). It was determined that various exercises performed had positive effects in terms of eliminating functional deficiencies, alleviating pain, socialization, and beck health in individuals who experienced problems related to physical and psychological health.
  • [ X ]
    Öğe
    The effect of resistance exercises performed at home on swimming performance of adolescent swimmers during the covid-19 pandemic period
    (Univ Antioquia, Inst Univ Educacion Fisica & Deporte, 2022) Umay, Busra; Atar, Ozdemir; Koc, Hurmuz
    Aim: to examine the effect of resistance exercises performed at home on swimming performance in adolescent swimmers during the COVID-19 pandemic period. Method: a total of 114 adolescent swimmers aged between 10-17 years, (N=66) male and (N= 48) female, performing at the Turkish Olympic Preparation Center (TOHM) participated in the research voluntarily. The research was designed as a quasi-experimental study, since there was no control group. The resistance exercise program, which was performed at home for 8 weeks during the pandemic period, was applied for the athletes participating in the research through video conference method and by expert swimming trainers. The pre-test swimming degrees of the athletes were requested from the institution with the archive scanning method, and the post-test values were taken by the expert swimming trainer after the applied training program. To determine the effect of the applied training program, 50m, 100m, 200m and 400m swimming degrees of the athletes were determined in the pool environment with the Castimolap D-308 hand chronometer. The data obtained as a result of measurement, calculation and tests in the research were analyzed in the SPSS 22.00 statistical analysis software. Paired-Samples T test was applied to determine the difference between pretest and posttest in the statistical analysis. The significance level was accepted as p < 0.05. Results: as a result of the statistical analysis, a statistically significant difference was determined between the freestyle swimming degrees (50-100-200-400m) pre-test and post-test values of the athletes. Conclusion: our results demonstrated that resistance exercises performed at home did not have a positive effect on swimming performance. In this respect, it is very important for the athletes in the swimming performance group to train in the pool environment in order to maintain and improve their performance.
  • [ X ]
    Öğe
    The Effects of A 6-Week Plyometric Training Programme on Sand Versus Wooden Parquet Surfaces on the Physical Performance Parameters of Well-Trained Young Basketball Players
    (Montenegrin Sports Acad, 2020) Ozen, Gokmen; Atar, Ozdemir; Koc, Hurmuz
    The purpose of this study was to investigate the effect of plyometric training on sand and wooden parquet training surfaces on the physical performance parameters of young male basketball players. Twelve well-trained young male basketball players with age 17.58 +/- 0.5 years, body mass 87.73 +/- 9.82 kg, and height 193.75 +/- 7.02 cm were voluntarily involved in the study. All participants were grouped randomly as sand and wooden training groups. A six-week plyometric training programme was performed on the sand and wooden parquet surfaces. Anthropometric measurements and physical performance tests; vertical and standing long jump, box agility, and 30m sprint tests were performed. Data were collected before and after six weeks of plyometric training and were analysed using ANCOVA. The results indicated that the plyometric training programme significantly improved jumping, agility and 30m sprint performance for both groups. Significant differences were found between the post-test mean values of two groups in the box-drill agility and 30m sprint test scores (p < .05). The results of this study suggest that while the plyometric training performed on a wooden or sand surface does not cause a different effect on the improvement of jumping performance, plyometric training on the sand surface may be a more effective training surface to improve the agility and sprint performance of young players.
  • [ X ]
    Öğe
    The impact of health anxiety on life satisfaction among male university students in sports sciences
    (Mre Press, 2025) Pepe, Osman; Dalbudak, Ibrahim; Atar, Ozdemir; Kocyigit, Berat; Dindar, Mustafa Deniz
    Background: In recent decades, there has been a notable decline in healthy lifestyle activity levels and a rise in unhealthy habits, particularly among university students. These trends are concerning, as behaviors developed during university years can negatively affect long-term life satisfaction. The aim of this study is to examine the effect of health anxiety on life satisfaction levels of male university students enrolled in sports sciences. Methods: The study population consisted of male university students studying sports sciences, with a sample of 421 students selected by a simple random sampling method. Data were collected using a researcher-designed personal information form, and the health anxiety and life satisfaction scales in the literature. Statistical analysis were conducted using SPSS 22.0 (IBM SPSS Statistics, Chicago, IL, USA). Pearson correlation analysis was applied to determine the relationships between variables and simple regression analysis was employed to assess the effect of health anxiety on participants' life satisfaction. Results: The findings revealed a weak level of negative correlation between health anxiety and life satisfaction among male university students in sports sciences. Furthermore, health anxiety was found to significantly impact life satisfaction. Conclusions: This study highlights the need for targeted interventions to promote physical activity among university youth. Addressing the physical activity in university years may contribute to healthier lifestyles, and reduced health anxiety and improved life satisfaction in the long term.
  • [ X ]
    Öğe
    THE RELATIONSHIP BETWEEN LIFE SATISFACTION AND BODY IMAGE IN AMPUTEE AND DISABLED SOCCER PLAYERS IN TURKIYE
    (Univ Catolica Petropolis, 2022) Sanal, Alperen; Atar, Ozdemir; Ozen, Gokmen; Dindar, Mustafa Deniz
    The purpose of this study was to the relationship between life satisfaction and body image in amputee and disabled soccer players in Turkiye. 102 football players with lower extremity competing in different leagues in the 2019-2020 amputee football season voluntarily participated in the study. A quantitative research method was used in the research. Satisfaction with Life Scale and Amputee Body Image Scale (ABIS) were used to collect data. SPSS package program was used for the data analysis. Pearson correlation coefficient was used to identify the relationship between satisfaction with life scale and amputee body image scale. As a result of the study, it was found that, in amputee football players with lower extremity amputation, there was a highly negative relationship between satisfaction with life score and ABIS overall score (r=-0.790; P=0.000) and between satisfaction with life score and ABIS social factor score (r=-0.776; P=0.000), and a moderately negative relationship between satisfaction with life score and ABIS personal factor score (r=-0.684; P=0.000) and between satisfaction with life score and ABIS functional factor score (r=-0.610; P=0.000). In conclusion, as the amputee football players' level of satisfaction with life increased, so did their positive perception about their body image.