Background/Objectives: Despite extensive research on caffeine’s (CAF’s) ergogenic effects, evidence regarding its impact on anaerobic performance in female athletes remains limited and inconclusive. The aim of this study was to investigate the acute effects of 6 mg/kg⁻¹ caffeine on anaerobic performance, functional strength, agility, and ball speed in female soccer players. Methods: A randomized, double-blind, placebo-controlled crossover design was employed. Thirteen moderately trained female soccer players (age: 21.08 ± 1.11 years; height: 161.69 ± 6.30 cm; weight: 59.69 ± 10.52 kg; body mass index (BMI): 22.77 ± 3.50 kg/m²; training age: 7.77 ± 1.16 years; habitual caffeine intake: 319 ± 160 mg/day) completed two experimental trials (caffeine vs. placebo (PLA)), separated by at least 48 h. Testing sessions included performance assessments in vertical jump (VJ), running-based anaerobic sprint test (RAST), bilateral leg strength (LS), handgrip strength (HS), single hop for distance (SH), medial rotation (90°) hop for distance (MRH), change of direction (COD), and ball speed. Rating of perceived exertion (RPE) was also recorded. Results: CAF ingestion significantly improved minimum (p = 0.011; d = 0.35) and average power (p = 0.007; d = 0.29) during RAST. A significant increase was also observed in SHR (single leg hop for distance right) performance (p = 0.045; d = 0.44). No significant differences were found in VJ, COD, ball speed, LS, HS, SHL, MRHR, or MRHL (p > 0.05). RPE showed a moderate effect size (d = 0.65) favoring the CAF condition, though not statistically significant (p = 0.110). Conclusions: In conclusion, acute CAF intake at a dose of 6 mg/kg⁻¹ may enhance anaerobic capacity and lower-limb functional strength in female soccer players, with no significant effects on jump height, agility, or upper-body strength.

This study aims to investigate anxiety states of students in Faculty of Sport Sciences during coronavirus (Covid19) in terms of some variables. Total number of 166 students as 67 female and 99 male chosen by simple random sampling from Sinop University Faculty of Sport Sciences participated in this study. Informed consent form and Beck Anxiety Inventory were used as data collection tool. To disclose differences in statistical evaluation of the data Mann-Whitney U Test and for multiple comparisons Kruskal-Wallis Test were used. In paired comparison of the total scores in anxiety inventory, it was detected statistically difference with regards to gender variable in favor of males (p0,05). Anxiety levels of females participated in this study were found higher than males. No statistically significant difference was found in home exercise. But, anxiety levels of the participants exercised at home were observed lower compared to the others who did not.

Caffeine (CAF) has been shown to be an effective ergogenic aid in enhancing sports performance, including vertical jump (VJ), sprint, balance, agility, and freestyle swimming performance (FSP). However, whether acute CAF supplementation improves FSP in moderately trained female swimmers has not been well documented. Therefore, this study aimed to investigate the effects of CAF intake on vertical jump, balance, auditory reaction time (ART), and swimming performance in female swimmers. In a double-blind, cross-over design, eight moderately trained female swimmers (age: 21.3 ± 1.4 years, height: 161.2 ± 7.1 cm, body mass: 56.3 ± 6.7 kg, body mass index (BMI): 21.9 ± 1.3 kg/m², and habitual CAF intake: 246.4 ± 111.4 mg/day) ingested caffeine (CAF) (6 mg/kg) or a placebo (PLA) 60 min before completing VJ, balance, ART, and 25/50 m FSP. CAF supplementation resulted in a significantly lower time both in 25m (p = 0.032) and 50m (p = 0.033) FSP. However, CAF resulted in no significant difference in VJ, ART, and RPE (p > 0.05). Balance test results showed a non-significant moderate main effect (d = 0.58). In conclusion, CAF seems to reduce time in short-distance swimming performances, which could be the determinant of success considering the total time of the race. Thus, we recommend coaches and practitioners incorporate CAF into swimmers’ nutrition plans before competitions, which may meet the high performance demands.

Bu çalışmanın amacı; geleceğin antrenörlerinin egzersiz bağımlılık düzeylerinin incelenmesidir. Araştırmanın örneklem grubunu, 2019-2020 Eğitim Öğretim Yılı içerisinde Sinop Üniversitesi Spor Bilimleri Fakültesi Antrenörlük Eğitimi Bölümünden basit tesadüfi örneklem yöntemiyle seçilen 163 öğrenci (79 kadın, 84 erkek) oluşturmaktadır. Araştırmada veri toplama aracı olarak “Kişisel Bilgi Formu” ve “Egzersiz Bağımlılığı Ölçeği” kullanılmıştır. Ölçekten elde edilen puanlar için ikili karşılaştırmalarda Independent Samples t-test, çoklu karşılaştırmalarda ise One-Way ANOVA ve Tukey HSD testinden yararlanılmıştır. Araştırmada cinsiyet değişkenine göre egzersiz bağımlılığı ölçeğinin alt boyutlarından “bireysel-sosyal ihtiyaçların ertelenmesi ve çatışma” alt boyut puanı hariç, diğer alt boyutlar arasında anlamlı fark tespit edilmemiştir (p>0,05). Egzersiz yapma sıklığı ve lisans yılı değişkenleri “aşırı odaklanma ve duygu gelişimi” alt boyutu haricinde anlamlılık göstermemektedir (p>0,05). Diğer taraftan katılımcıların egzersiz süresi değişkenine göre egzersiz bağımlılıkları “aşırı odaklanma ve duygu gelişimi” ve “egzersiz bağımlılığı ölçeği genel toplam” alt boyutları puanlarında istatiksel olarak anlamlılık tespit edilmiştir (p0,05). Sonuç olarak; elde edilen verilere göre katılımcıların genel egzersiz bağımlılık düzeylerinin bağımlı grupta olduğu sonucuna ulaşılmıştır.

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 muscular endurance (40% of 1-RM repetitions to failure) in female athletes. Sixteen resistance-trained females (age: 20 ± 1 years; height: 167 ± 3 cm; body mass: 67 ± 4 kg; BMI: 17 ± 2 kg/m²; resistance training experience: 2 ± 1 years) completed four conditions in random order. The four conditions consisted of a mouth rinse with 25 mL solutions containing either 6% of CHO (Low dose of CHO: LCHO), 12% CHO (Moderate dose of CHO: MCHO), 18% CHO (High dose of CHO: HCHO) or water (Placebo: PLA) for 10 s prior to a bench press strength and muscular endurance test. Maximal strength (1-RM), muscular endurance (reps and total volume), heart rate (HR), ratings of perceived exertion (RPE) and glucose (GLU) were recorded each condition. There were no significant differences in strength (p = 0.95) or muscular endurance (total repetitions: p = 0.06; total volume: p = 0.20) between conditions. Similarly, HR (p = 0.69), RPE (p = 0.09) and GLU (p = 0.92) did not differ between conditions. In conclusion, various doses of CHO mouth rinse (6%, 12% and 18%) have no effect on upper body muscular strength or muscular endurance in female athletes.

Joint Diseases and Related Surgery (JDRS), the official journal of the Turkish Joint Diseases Foundation, is an international, peer-reviewed, immediate open access journal. All published articles in JDRS has been free for everyone, without embargo, since 1990.