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https://hdl.handle.net/20.500.12451/9133

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Determination of the functional, nutritional, and some quality properties of kefir produced with the addition of germinated chickpeas
(John Wiley and Sons Ltd, 2025) Kahve, Ayşe Nur; Bayrak, Ebru
Global population growth and rising health consciousness have increased the demand for sustainable and functional foods. This study aimed to enhance the nutritional value of chickpeas (Cicer arietinum L.) and evaluate the functional and quality characteristics of kefir enriched with germinated chickpeas. Germination conditions were optimized, and chickpea samples were analyzed for protein, moisture, ash, and total phenolic content. Principal component analysis (PCA) identified the optimal germination parameters. Kefir samples were prepared by incorporating ungerminated chickpeas, inulin, or optimally germinated chickpeas at concentrations of 0.5%, 1%, and 2%, and stored at 4°C ± 1°C for 7 days. Physicochemical, microbiological, and sensory analyses were performed on Day 1 and 7. The highest protein (14.99%) and total phenolic content (9.05 mg GAE/g) were observed in chickpeas soaked for 12 h at 30°C and germinated for 72 h. Kefir pH values ranged from 4.01 to 4.75 (p < 0.05). Increasing the concentration of germinated chickpeas significantly improved the total phenolic content (p < 0.05), and yeast growth was detected exclusively in these samples (p < 0.05). However, sensory evaluation scores declined with higher chickpea concentrations. In conclusion, kefir enriched with germinated chickpeas demonstrates enhanced nutritional and microbiological properties, indicating its potential as a functional beverage. Nevertheless, further improvements are necessary to optimize its sensory characteristics for consumer acceptance.
Relationship between exercise behavior change, physical activity levels and healthy eating attitudes in ındividuals using mobile phone applications
(Manisa Celal Bayar Üniversitesi, 2025) Yıldız, Yağmur
This study aimed to examine exercise behavior change, physical activity levels and attitudes toward healthy eating among individuals who perform physical activity using HisApp mobile phone application. The present study was conducted with 246 participants (144 male and 102 female) using the HisApp application (mobile application of the Turkish Sport for All Federation). The weight, height, levels of physical activity and body mass index of the participants were recorded. An exercise behavior changes questionnaire, and a healthy nutrition attitude scale were administered to the participants through Google online survey. Findings showed that exercise behavior changes sub-dimensions and Health Attitude Scale sub-dimensions have a positive correlation. Physical activity positively affects healthy eating attitude sub-dimensions, while no effect was observed on knowledge about nutrition, feelings about nutrition, and malnutrition. The stages of exercise behavior change were related to the attitude scale toward healthy eating. There was a significant positive correlation between physical activity level and positive nutrition variables and a significantly negative correlation with malnutrition (p<0.05). This research concluded that positive attitudes towards healthy eating and encouraging people to make healthier choices can be attributed to a combination of education, accessibility, social norms, individual variables, and environmental factors. Additionally, it was found that individuals using the HisApp physical activity mobile application on their phones showed positive improvements in exercise behavior changes.
Examination of physical activity and body composition levels of adolescents
(Selçuk Üniversitesi, 2022) Yıldız, Yağmur; Ceylan, Halil İbrahim; Bayrakdar, Akan
Purpose of the Study: The study aimed to examine adolescents' physical activity and body composition levels according to various variables. Materials and Methods: The participant group of this study consisted of a total of 1104 children (551 girls and 553 boys between the ages of 10-14, enrolled in primary schools in Ankara. In our study, physical activity questionnaire for children (PAQ-C) scale was used to determine the weight, height, BMI measurements, and physical activity level. Result: According to the findings, a significant difference was found in the physical activity levels of boys according to the types of transportation to school (p<0.05). When children's sleep duration is examined, boys' and girls' BMI and physical activity levels are similar (p>0.05). Significant differences were found in the BMI and physical activity levels of both boys and girls during the daily use of the technological device (p<0.05). A negative correlation (p<0.05) was found between the daily use of technological devices, sleep duration, and physical activity levels of boys and girls, and a positive correlation with BMI (p<0.05). Conclusions: Prolonged screen time is thought to affect body composition and physical activity level negatively. It is thought that the sleeping time should be 8 hours and the screen time should be less in order for BMI and physical activity level to be at appropriate levels.
Blood flow restriction training prescription: percentage of lower limb arterial occlusion pressure at fixed values and based on brachial systolic blood pressure
(Springer Nature, 2025) de Queiros, Victor S.; Rolnick, Nicholas; Kamış, Okan; Alves, Julio M.; Neto, Gabriel R.; Amorim, Samuel; Gonzaga, Jozilma Medeiros; Aniceto, Rodrigo R.; Cabral, Breno Guilherme de Araujo Tinoco
Blood flow restriction (BFR) exercise is recommended with personalized pressures between 40 and 80% of arterial occlusion pressure (AOP) to ensure safety and efficacy. However, many studies use fixed pressures or personalized pressures based on brachial blood pressure, such as 130% of resting brachial systolic pressure (rbSBP), which may lead to inconsistencies. This study aimed to estimate the percentage of AOP in the thigh when using fixed pressures (e.g., 100, 200, and 300 mmHg) or 130% of SBP.MethodsFifty-one healthy participants (18-40 years) underwent anthropometric measurements, brachial blood pressure assessment, and AOP determination in the thigh in supine, seated, and standing positions using an 18 cm cuff. AOP measurements were randomized and compared to fixed pressures and 130% of SBP.ResultsAOP was higher than 100 mmHg in all positions, with 100 mmHg corresponding to 80.5%, 62%, and 56.9% of AOP in the supine, seated, and standing positions, respectively. Conversely, 200 mmHg exceeded AOP, reaching 160.9%, 124.2%, and 113.7% in the same positions. Compared to SBP, supine AOP was lower than 130% of rbSBP, standing AOP was higher, and seated AOP showed no significant difference (p = 0.595). In the seated and standing positions, 130% of rbSBP corresponded to 92.5% and 84.7% of AOP, respectively.ConclusionA fixed pressure of 100 mmHg may fall within the recommended range for BFR prescription, but findings are specific to AOP assessment with an 18 cm cuff. Personalization remains crucial for accuracy and safety.
Differences in foot pressure distribution of males with and without basketball training in early adolescence
(MRE Press, 2025) Kırıkoğlu, Nagihan; Pekel, Aylin Özge; Ceylan, Tülay; Eliöz, Murat; Yavaşoğlu, Belma; Beykümül, Ayşegül; Kurt, Kemal Arda; Çalışan, Hande Yazıcıoğlu; Baykal, Cihan; Karaman, Merve; Türkoğlu, Hayati; Ceylan, Levent
In this study, the Rsscan V9 (RsScan International, Olen, Belçika) foot scanning system was used to determine the potential foot pressure distribution and foot contact times of individuals in early adolescence who did not receive sports training and those who received regular basketball training. Methods: The study involved 120 adolescent volunteers aged 11–14 years of which 60 did not receive sports training, and the other 60 received basketball training in Ankara for at least two years. The socio-demographic data of the study participants were documented. The foot pressure analyses were carried out in both fixed and moving postures. Results: When pressure values were compared between adolescents with and without basketball training, statistically significant differences were found between Q1 (left forefoot pressure) and Q2 (right forefoot pressure) values. Specifically the mean value (p < 0.05) of Q2 (right forefoot pressure) variable was higher in basketball participants compared to non-athletes. In non-athletes, Q1 (left forefoot pressure) (p < 0.05) was significantly higher than in participants who received basketball training. Similarly, with regard to the left forefoot pressure duration (left ms) variable, participants with basketball training showed significantly higher mean scores than non-athletes (p < 0.001). The findings revealed that there were differences in pressure imbalances and ground contact times between basketball players and non-players. Conclusions: If not controlled regularly, pressure imbalances can lead to serious discomfort in the feet, knees, hips and lower back, and serious injuries can be prevented if detected early. Minor injuries that develop due to repetitive movements and stress on joints from years of training can be treated early, and preventive applications can becarried out by recognising potential injuries. For this reason, it is recommended that basketball players have a regular foot pressure analysis carried out at the start of the season.
Does running performance relate to the market value of elite male soccer players? A case study from the FIFA world cup
(BioMed Central Ltd, 2025) Kılcı, Abdullah; Koç, Muhammed Emin; Binokay, Hülya; Erdoğan, Ali; Kamış, Okan; Oliveira, Rafael
The study main aim was to investigate: the relationship between running performances and market values of soccer players playing in the 2022 FIFA World Cup, by playing position and all players; the comparisons by playing position; to analyse the relationship between running metrics and market values of the highest and lowest players ranked players. The relationship between running metrics and market values of 306 soccer players who participated in the tournament and played full time, as well as the 40 players with the highest (n = 20) and lowest (n = 20) market values was analysed. Overall, there was a very weak correlation between market values and total distance (r = 0.149), zone 3 (r = 0.153), zone 4 (r = 0.139), zone 5 (r = 0.160), high-speed runs (r = 0.132), sprints (r = 0.147), and top speed (r = 0.194) for all players (p < 0.05). Defenders showed very weak positive correlation between market values and top speed (r = 0.155, p < 0.05). Midfielders showed weak positive correlations between market values and zone 4 (r = 0.302, p < 0.05) and zone 5 (r = 0.369, p < 0.001), sprints (r = 0.367, p < 0.001), and top speed (r = 0.304, p < 0.05). Forwards showed no correlations (p > 0.05). While there is no significant correlation between running metrics and market value for players with the lowest market value (p > 0.05), there was a moderate negative correlation between total distance (r=-0.577) and zone 2 (r=-0.612) for the 20 players with the highest market value (p < 0.05). Moreover, there was a weak correlation with zone 5 (r = 0.450) and a moderate correlation with the top speed values (r = 0.596) (p < 0.05). Weak correlations between soccer players’ running performance and market values suggest that different running thresholds are important metrics, although other factors (e.g., technical skill, age, national and team club) may influence this relationship. In conclusion, since coaches and scouts aim to recruit relatively talented players within the limits of their budgets, selecting athletes with high aerobic and anaerobic performance, particularly those with a strong high-intensity running profile, can contribute to team success and potentially generate high transfer revenues in the future.
Continuous vertical jump test is a reliable alternative to wingate anaerobic test and isokinetic fatigue tests in evaluation of muscular fatigue resistance in endurance runners
(BioMed Central Ltd, 2025) Acar, Nasuh Evrim; Umutlu, Gökhan; Ersöz, Yasin; Akarsu Taşman, Gizem; Güven, Erkan; Sınar Ulutaş, Derya Selda; Kamış, Okan; Erdoğan, Murat; Aslan, Yunus Emre
Background: Endurance athletes face the challenge of sustaining performance while managing cumulative fatigue during half marathons and ultra-marathons while the evaluation of muscular fatigue resistance in endurance runners is essential to optimize training and race-day performance. This study aimed to assess the validity of total work measured during the continuous vertical jump test (CVJT) as an alternative to Wingate anaerobic power test (WAnT) and isokinetic fatigue test (ISO FAT) for evaluating muscular fatigue resistance and to test whether these measures correlated to race performance during half marathon (HM) and ultra marathon (UM) races. Methods: Twenty-two male recreational distance runners (age: 35.23 ± 21.12 years, height: 171.13 ± 21.35 cm, weight: 69.49 ± 11.25 kg) were recruited in this study. Anthropometrics, WAnT, ISO FAT, and CVJT were interspersed 24 h of recovery, within 7 weeks. Results: Total work during WAnT was highly associated with the measures of ISO FAT and CVJT both pre-race and post-race conditions (p < 0.001). Bland Altman limits of agreement (LOA) revealed that total work measures of ISO FAT and CVJT both during baseline and following HM and UM races (Hedge’s g: 0.411; 0.353; 0.428; 0.435) were lower than WAnT while their 95% LOA represented 23.46%, 32.81%, 35.02%, and 36.79% of WAnT, respectively. Conclusion: Strong internal consistency and reproducibility in total work measures and the magnitude of the difference among tests suggests that CVJT, WAnT, and ISO FAT warrant interchangeability in assessing muscular fatigue resistance. These findings offer important implications and highlight the utility and feasibility of CVJT as an alternative to WAnT and ISO FAT for training load assessment.
Relationship between serum vitamin D deficiency, nutrition status and anemia parameters in women with obesity
(Sociedad Chilena de Nutricion Bromatologia y Toxilogica, 2024) Kahve, Ayşe Nur; Ayhan, Nurcan Yabancı
La deficiencia de vitamina D es un problema de salud pública significativo asociado con muchas enfermedades crónicas. Objetivo: Demostrar el impacto de la deficiencia de vitamina D en los parámetros de anemia y la composición corporal en mujeres con obesidad. Métodos: El estudio se realizó en un total de 75 mujeres con obesidad (Índice de Masa Corporal ?30,0 kg/m²) entre las edades de 19-55 años que viven en Aksaray, compuestas por 43 con deficiencia de vitamina D (<30 nmol/L) y 32 sin deficiencia (>50 nmol/L). Se recopiló información personal, estado de salud general, algunos hábitos nutricionales y un formulario de consumo de alimentos a través de entrevistas cara a cara con las mujeres y tomando formularios de consentimiento. Se realizaron mediciones antropométricas y se examinaron los criterios de anemia y los valores bioquímicos. Resultados: Los valores de hierro sérico, ferritina, hemoglobina, hematocrito y vitamina B12 fueron más bajos en mujeres con niveles de vitamina D <30 nmol/L en comparación con aquellas con niveles >50 nmol/L, y esta diferencia fue estadísticamente significativa (p<0,05). Conclusión: La deficiencia de vitamina D está asociada con los niveles séricos de hierro, ferritina, hemoglobina y hematocrito. Los resultados confirmaron nuestra hipótesis de que la deficiencia de vitamina D en suero podría ser un peligro potencial para el desarrollo de la anemia.
Effect of bodyweight squat exercise with blood flow restriction on sprint and jump performance in collegiate soccer players
(Pamukkale University, 2024) Kamış, Okan; Kurt, Muhammet; Blaisdell, Robert; Macdonald, Christopher; Nobari, Hadi
This study investigated the effect of bodyweight squat (BWS) with blood flow restriction (BFR) exercise on sprint and jump performance in collegiate male soccer players. Twenty-four male collegiate soccer players (age: 19.3±1.0 years; height: 178.8±5.8 cm; body mass: 73.5±10.7 kg) were randomly divided equally into BFR or control groups. The BFR group performed BWS with BFR, while the Control group performed BWS without BFR 3x/week for eight weeks on nonconsecutive days. Both groups performed BWS for 30-15-15-15 repetitions with 30-second rest between sets (with continuous BFR pressure between sets). Limb occlusion pressure (LOP) was measured in a supine position after 10 min of passive rest by the automated device. Progressive overload was achieved by increasing LOP % weekly. The pressure was set at 60% LOP for the first four weeks and then was increased to 70% LOP for weeks 5 and 6 and then to 80% LOP for weeks 7 and 8. Countermovement jump (CMJ) and 30m sprint performance were assessed before and after the exercise program. No statistically significant differences between groups were identified. Both groups significantly increased sprint and CMJ performance (p<0.05). BFR and control groups increased jumping performance by 7% (ES: 0.55) and 2% (ES: 0.13), respectively. As for sprint performance, BFR and control groups increased by 5% (ES: 1.53) and 3.5% (ES: 1.14), respectively. In conclusion, the BFR group showed a larger effect size for sprint performance, suggesting that BFR may have a moderate to large effect on performance.
Impact of limb occlusion pressure assessment position on performance, cardiovascular, and perceptual responses in blood flow restricted low-load resistance exercise: A randomized crossover trial
(Taylor & Francis, 2025) Kamış, Okan; Rolnick, Nicholas; de Queiros, Victor S; Akçay, Neslihan; Keskin, Kadir; Yıldız, Kerem Can; Werner, Tim; Hughes, Luke; Sofuoğlu, Cem
This study investigated the effect of limb occlusion pressure (LOP) position on exercise performance, cardiovascular responses, and perceptual experiences during seated bilateral leg extensions with and without blood flow restriction (BFR). Thirty resistance-trained males (age: 22?±?2?years; weight: 74.4?±?13.6?kg; height: 177.4?±?6.4?cm; BMI: 23.5?±?3.3?kg/m2) participated. Each performed exercise to failure (4 sets, 30% 1RM, 1?min rest) in three conditions: Supine LOP-BFR, Seated LOP-BFR, and no-BFR. BFR was applied at 60% LOP. Significant interaction effects were found for RPE (p?=?0.021, d?=?0.76), RPD (p?
Effects of different pre-exercise strategies on jumping performance in female volleyball players
(Edizioni Minerva Medica, 2025) Keskin, Kadir; Akçay, Neslihan; Özmen, Tarık; Contarlı, Nurcan; Yıldız, Kerem C.; Sofuoğlu, Cem; Kamiş, Okan; Rolnick, Nicholas; de Queiros, Victor S.; Montoye, Alexander
The present study aimed to compare different pre-exercise strategies on jumping performance in female volleyball players. METHODS: Fifteen healthy female volleyball players (age=18 +/- 0.6 years; training experience = 7.3 +/- 1.4 years; height = 164.8 +/- 5.4 cm; body mass = 57.2 +/- 8.1 kg) volunteered to participate in the study. Three different pre-exercise conditions (5 repetition maximum knee extension, electromyostimulation [EMS] and ischemic preconditioning [IPC]) were applied to the subjects and compared to a control condition performing a standardized warmup. Subjects performed the squat jump and 15 sec repeated countermovement jumps following a rest period. Measures associated with jumping performance were collected and compared between conditions. Rating of perceived exertion was also collected after each performance test. RESULTS: No pre-exercise condition outperformed a standardized warm-up on inducing improvements in jumping performance and in fact, EMS and IPC conditions resulted in performance decrements compared to control (P<0.05). CONCLUSIONS: We conclude that a standardized warm-up is enough to induce improvements in jumping performance in female volleyball players. Future research should examine alternative strategies alongside standardized warm-up to determine how best to prepare for jumping and related sport-specific tasks in female volleyball players.
Relationship between hip flexion range of motion, leg strength, and shooting speed in young soccer players
(Ankara Üniversitesi, 2024) Başkaya, Gizem; Bostancı, Sare; Uzgur, Kamil; Çar, Bekir; Kamış, Okan
This study aimed to determine the relationship between hip flexion range of motion, leg strength, and shooting speed in young soccer players. Twenty-three volunteer male soccer players actively competing in the Turkish U17 league participated in the study. Leg strength was determined by the Activforce 2 device, hip flexion range of motion by the MyRom application, and shooting velocity by radar device (Stalker Solo 2 Sports Radar). The Pearson Correlation Test was applied to determine the relationship between the parameters. Moderate and high positive correlations were found between 11m, 18m and 25m shooting speeds and right hip flexion ROM at moderate level and between left hip flexion ROM at moderate and high level; moderate and high positive correlations were found between 18m and 25m shooting speeds and non-dominant leg peak force and average force. It can be concluded that the correlations at different levels or no correlations will provide an effective result for coaches to prepare training programmes and will contribute to which parameters should be focused on to improve shooting performance and it can be said that the mobility and strength levels of the hip flexors in both dominant and non-dominant legs should be increased in order to improve the shooting speed performance of young soccer players.
Low-load resistance exercise with blood flow restriction versus high-load resistance exercise on hamstring muscle adaptations in recreationally trained men
(NSCA National Strength and Conditioning Association, 2024) Kamiş, Okan; Gürses, V. Volkan; Şendur, H. Nahit; Altunsoy, Mustafa; Pekel, H. Ahmet; Yıldırım, Erkan
Kamis‚, O, G ¨urses, VV, S‚ endur, HN, Altunsoy, M, Pekel, HA, Yıldırım, E, and Aydos, L. Low-load resistance exercise with blood flow restriction vs. high-load resistance exercise on hamstring muscle adaptations in recreationally trained men. J Strength Cond Res XX(X): 000–000, 2024—Low-load resistance exercise with blood flow restriction (BFR-RE) has been suggested as a viable alternative exercise for traditional high-load resistance exercise (HL-RE). However, very little is known about hamstring muscle thickness, stiffness, and strength after BFR-RE. This study aimed to compare the effects of 6 weeks of BFR-RE and HL-RE on hamstring muscle thickness, stiffness, and strength. Twenty-nine recreationally trained men were pair matched and randomly assigned to the BFR-RE (n 5 15) and HL-RE (n 5 14) groups. The BFR-RE groups performed bilateral lying leg curl exercise (30-15-15-15 reps, 30- second rest between the sets, 30% 1RM) with BFR cuffs (60% of limb occlusion pressure), whereas HL-RE performed the same exercise (3 3 12 reps, 90-second rest between the sets, 70% 1RM) without BFR cuffs. Hamstring muscle thickness, muscle stiffness, isokinetic muscle strength, and 1RM were assessed at baseline and follow-up after completing a 6-week resistance exercise program (33 a week). Hamstring muscle thickness was assessed by ultrasonography, whereas muscle stiffness was evaluated by shear wave elastography. Isokinetic dynamometry and a 1RM strength test were used to determine muscular strength before and after the exercise program. Statistical significance was set at p , 0.05. No significant effect was found for hamstring muscle strength, thickness, and stiffness for group and group 3 time interaction, and only a significant main effect of time (p , 0.001) was observed for all outcomes. Both groups experienced significant improvements for all outcomes from baseline to followup without any between-group differences. In conclusion, results revealed that BFR-RE can provide similar hamstring muscle strength, thickness, and stiffness compared with HL-RE.
Body position and cuff size influence lower limb arterial occlusion pressure and its predictors: implications for standardizing the pressure applied in training with blood flow restriction
(Frontiers Media SA, 2025) de Queiros, Victor S.; Rolnick, Nicholas; Kamış, Okan; Formiga, Magno F.; Rocha, Roberto F. C.; Alves, Júlio César Medeiros; Vieira, João Guilherme; Vianna, Jeferson Macedo
Arterial occlusion pressure (AOP) is a relevant measurement for individualized prescription of exercise with blood flow restriction (BFRE). Therefore, it is important to consider factors that may influence this measure. Purpose: This study aimed to compare lower limb AOP (LL-AOP) measured with 11 cm (medium) and 18 cm (large) cuffs, in different body positions, and explore the predictors for each of the LL-AOP measurements performed. This information may be useful for future studies that seek to develop approaches to improve the standardization of pressure adopted in BFRE, including proposals for equations to estimate LL-AOP. Methods: This is a cross-sectional study. Fifty-one healthy volunteers (males, n = 25, females, n = 26; Age: 18–40 years old) underwent measurement of thigh circumference (TC), brachial blood pressure, followed by assessments of LL-AOP with medium and large cuffs in positions supine, sitting and standing positions. Results: The large cuff required less external pressure (mmHg) to elicit arterial occlusion in all three-body positions when compared to the medium cuff (p < 0.001). The LL-AOP was significantly lower in the supine position, regardless of the cuff used (p < 0.001). Systolic blood pressure was the main predictor of LL-AOP in the large cuff, while TC was the main predictor of LL-AOP with the medium cuff. Body position influenced strength of the LL-AOP predictors. Conclusion: Our results indicate that LL-AOP and its predictors are substantially influenced by body position and cuff width.
Hypertrophic effects of low-load blood flow restriction training with different repetition schemes: a systematic review and meta-analysis
(PeerJ Inc., 2024) de Queiros, Victor S.; de Queiros, Victor S.; Schoenfeld, Brad J.; de França, Ingrid Martins; Guilherme Vieira, João; Veiga Sardeli, Amanda; Kamış, Okan; Rodrigues Neto, Gabriel; de Araújo Tinôco Cabral, Breno Guilherme; Moreira Silva Dantas, Paulo
This systematic review and meta-analysis analyzed the effect of low-load resistance training (LL-RT) with blood flow restriction (BFR) versus high-load resistance training (HL-RT) on muscle hypertrophy focusing on the repetition scheme adopted. Methods. Four databases were searched to identify randomized controlled trials that compared the effect of LL-RT with BFR versus HL-RT on muscle hypertrophy. Standardized mean differences (SMD) were pooled in a random effects meta-analysis. Results. The overall analysis did not demonstrate significant differences between conditions (SMD = 0.046; p = 0.14). A similar result was observed when we separately analyzed studies that used sets to momentary muscle failure (SMD = 0.033; p = 0.520), sets of 15 repetitions (SMD = 0.005; p = 0.937) and a fixed repetition scheme composed of 75 repetitions (SMD = 0.088; p = 0.177). The analysis considering body region indicates no difference in lower limb exercise between HL-RT and LL-RT with BFR (SMD = 0.00066; p = 0.795) while upper limb exercise favors HL-RT (SMD = 0.231; p = 0.005). Conclusion. LL-RT with BFR elicits muscle hypertrophy similar to HL-RT regardless of the employed repetition scheme, although there appears to be a small beneficial effect in favor of HL-RT in upper limb exercis
The relationship between reactive strength index and acceleration, sprint, change of direction performance and leg strength in football players: Descriptive research
(Türkiye Klinikleri Yayınevi, 2024) Başkaya, Gizem; Uzgur, Kamil; Kamiş, Okan; Bostancı, Sare
The aim of this study was to determine the re- lationship between reactive strength index and leg strength, accelera- tion, sprint, change of direction and eccentric utilisation rate parameters of young football players. Material and Methods: A total of 23 foot- ball players who competed in the U17 league in the 2022-2023 season voluntarily participated in the study. Height and body weight measure- ments were used to determine the physical parameters of the footballers and right-left leg strength, drop jump, countermovement jump, squat jump, 10 m acceleration, 40 m sprint and illinois agility tests were used as performance tests. Reactive strength index and eccentric utilisation ratio were calculated with the data obtained from jump tests. The nor- mal distribution of the data was analysed by Shapiro-Wilks test and the relationship between the variables was determined by Pearson correla- tion test. Results: Significant relationships were found between reactive strength index and eccentric utilisation ratio (r=0.547; p<0.05), right leg average strength (r=0.451; p<0.05) and left leg average strength (r=0.436; p<0.05). No significant correlation was found between reac- tive strength index and acceleration, sprint, change of direction and right-left leg peak strength performances (p>0.05).Conclusion: In con- clusion, it can be suggested that the reactive strength index parameter should be taken into consideration in the evaluation process of strength and eccentric utilisation rate of young football players.
Çimlendirilen tane ve filiz ürünlerin beslenmedeki rolü ve önemi
(Gıda Teknolojisi Derneği, 2023) Kahve, Ayşe Nur; Bayrak, Ebru
Son yıllarda tüketicilerin besin tercihlerini ve beslenme alışkanlıklarını değiştirme yoluna gitmesi sonucunda organik, glutensiz ve fermente gıdaların tüketiminin yanı sıra çimlendirilmiş tane ve filiz ürünlerinin de tüketimi artmıştır. Çimlendirilmiş tanelerin vitamin, mineral, antioksidatif özellikler ve çeşitli biyoaktif bileşenler yönünden daha zengin olduğu, ayrıca besinlerin yalnızca kimyasal özelliklerinde değil lezzet, koku ve renk gibi duyusal özelliklerinde de olumlu değişimler gözlemlendiği ortaya konulmuştur. Bununla birlikte çimlenme, makro ve mikro besin ögelerinin emilimini engelleyen enzimleri inaktive etmesinden dolayı yetersiz beslenme sorununa alternatif bir çözüm olarak değerlendirilmektedir. Bu derlemede, bazı besinlerin çimlendirilmesiyle besinsel kompozisyonunda ve fonksiyonel etkilerinde meydana gelen değişimlerin incelenmesi amaçlanmıştır.
Taekwondo Sporcularında Core Egzersizlerin Antropometrik Özellikler ve Bazı Performans Parametrelerine Etkisi: Deneysel Araştırma
(Türkiye Klinikleri Yayınevi, 2023) Yıldız, Yağmur; Ünlü, Hüseyin
Bu araştırmanın amacı, taekwondo sporcularında core egzersizlerin antropometrik özellikler ve bazı performans parametrele- rine etkisini incelemektir. Gereç ve Yöntemler: Araştırmanın katılım- cılarını 30 genç erkek taekwando sporcusu olu şturmuştur. Araştırma grubundaki taekwandocular dinamik core egzersiz (DCE) yapanlar (n=10), statik core egzersiz (SCE) yapanlar (n=10) ve kontrol (n=10) grubu olmak üzere 3 gruba ayrılmıştır. Dinamik Core Egzersiz ve Sta- tik Core Egzersiz grupları taekwondo branşına özgü teknik, taktik an- trenman programları sonrası yirmişer dakika, 8 hafta süreyle haftada 3 gün dinamik core ve statik core egzersizleri uygulamıştır. Araştırmada Dinamik Core Egzersiz, Statik Core Egzersiz ve kontrol gurubunun ön- test ve son-testlerinden elde edilen veriler SPSS program ı ile değer- lendirilmiştir. Bulgular: Araştırmadan elde edilen sonuçlara göre araştırmadaki taekwandocuların bel, kalça ve bel/kalça oranları gibi an- tropometrik özelliklerinde anlaml ı bir farkl ılığa rastlanmam ıştır (p>0.05). Bunun yanında erkek taekwandocuların performans özellik- lerinden bacak kaldırma, mekik, plank ve izometrik s ırt kuvveti pare- metrelerinde anlamlı bir farklılığa rastlanırken (p<0.05), şınav, 10 m sürat, 505 çeviklik ve arrowhead çeviklik paremetlerinde ise anlaml ı bir farklılığa rastlanmamıştır (p>0.05). Sonuç: Erkek Taekwandocu- larda antrenman sonras ı yapılan Dinamik Core Egzersizleri ve Statik Core Egzersizlerinin antropometrik özellikler üzerinde bir etkisi gö- rülmezken, özellikle Dinamik Core Egzersizlerinin performans para- metreleri üzerinde etkisi olduğu tespit edilmiştir. Bu nedenle farklı spor branşlarında da sporcuların branşa özgü teknik ve taktik antrenmanla- rına ek olarak core egzersizleri uygulamaları önerilebilir.
Relationships between training load, peak height velocity, muscle soreness and fatigue status in elite-level young soccer players: a competition season study
(BioMed Central Ltd, 2023) Nobari, Hadi; Eken, Özgür; Kamiş, Okan; Oliveira, Rafael; González, Pablo Prieto; Aquino, Rodrigo
Background This study aimed to compare training load parameters, delayed onset muscle soreness (DOMS), and fatigue status between season periods (1st and 2nd halves) in U14 soccer players and to analyze the relationships between training load parameters based on season periods (1st and 2nd halves) with peak height velocity (PHV), DOMS, and fatigue status in under-14 (U14) young elite soccer players. Additionally, it was intended to analyze if fatigue, DOMS and PHV could explain training load parameters across the season. Methods Twenty U14 players that competed in the national league participated in this study. The players were monitored during the whole season (26 weeks), and evaluations were carried out at the end of the in-season. Anthropometric and body composition parameters and the maturity ofset of each player were utilized to compute each player’s age at PHV. Players reported their levels of DOMS and fatigue status using Hooper index questionnaires. The internal load was monitored using the rating of perceived exertion (RPE). Acute weekly internal load (AW), chronic weekly internal load (CW), acute: chronic workload ratio (ACWR), training monotony (TM), and training strain (TS) were also obtained. Results The main results showed that TM was higher in the 2nd half, while CW, AW and DOMS were higher in the 1st half of the season. Moreover, the main correlations showed a positive correlation between PHV and TS (2nd half of the season) and between fatigue and TM (1st half of the season). Conclusion In conclusion, variations in well-being status and PHV cannot explain the variations in internal training loads in elite U14 soccer players. In addition, internal training load indices during the frst half of the competitive season can promote a fundamental base for progression loads during the second period of the competitive season.
Fiziksel aktivitenin korunmaya ihtiyacı olan çocuklarda bilişsel esnekliğe etkisi
(Aksaray Üniversitesi, 2022) Yazıcıoğlu Çalışan, Hande; Koçak, Çalık Veli
Bilişsel esneklik, farklı durumlara uyum sağlayabilme ve farklı sorunlar ile çözümlerine çok yönlü yaklaşabilme becerisi olarak açıklanmaktadır. Fiziksel aktivitenin bilişsel esnekliğe olumlu etkileri bilinmektedir. Bu araştırmanın amacı, fiziksel aktivitenin korunmaya ihtiyacı olan çocukların bilişsel esnekliğine etkisini incelemektir. Araştırmada ön test-son test kontrol gruplu yarı deneysel desen kullanılmıştır. Araştırmanın örneklemini 11-12 yaş aralığında deney grubunda 15, kontrol grubunda ise 15 olmak üzere toplam 30 çocuk oluşturmuştur. Araştırmada deney grubuna 8 hafta süresince haftada üç (3) gün, 60 dakika süren fiziksel aktivite programı uygulanmıştır. Araştırma verileri “Kişisel Bilgi Formu ve Bilişsel Esneklik Ölçeği’’ ile toplanmıştır. Araştırma verilerinin normal dağılım varsayımını karşıladığı belirlenmiştir. Araştırmanın istatistiksel analizlerinde parametrik testler kullanılmış ve anlamlılık düzeyi p<0,05 olarak kabul edilmiştir. Araştırma sonucunda, fiziksel aktivite programının korunmaya ihtiyacı olan çocuklarda bilişsel esnekliği geliştirdiği belirlenmiştir.

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