This study aims to compare the effect of sprint distance and repetition number on performance, physiological responses, and energy systems contributions. Eighteen male university league soccer players (age: 19.9 ± 1.6 years, height: 177.9 ± 4.7 cm, body mass: 72.4 ± 6.3 kg, percentage body fat: 8.9 ± 1.8, training experience: 7.4 ± 1.6 years) completed two different repeated sprint protocols: 20 × 20 m (20 × 20) and 10 × 40 m (10 × 40) with 15s and 30s rest intervals, respectively. Oxygen uptake (VO2) were measured during the rest, exercise, and recovery phases. Rest and peak blood lactate concentrations were determined. Using VO2 and lactate values, the energy system contributions were calculated using a mono-exponential model and mathematical calculations. Energy systems contributions and total energy expenditure (TEE) were calculated both for the entire protocol (overall) and for the sprints only. Ratings of perceived exertion (RPE), peak and mean heart rate (HR) responses were significantly higher in the 20 × 20 whereas lactate response was higher in the 10 × 40. TEE was similar between the 10 × 40 (586.3 ± 60.8 kJ) and 20 × 20 (595.6 ± 57.5 kJ). For overall estimations, the 10 × 40 and 20 × 20 presented similar results of oxidative (47.5 ± 5.4 vs 45.7 ± 5.1 kJ min−1) and phosphagen (44.7 ± 5.4 vs (42.9 ± 4.8 kJ min−1) systems contributions whereas glycolytic contribution was higher in the 10 × 40 (15.5 ± 2.2 vs 12.8 ± 2.3 kJ min−1). For sprints only estimation, the phosphagen (257.6 ± 31.5 vs 225.2 ± 28.2 kJ min−1), glycolytic (89.4 ± 13.4 vs 67.3 ± 12.5 kJ min−1), and oxidative (76.9 ± 6.9 vs 72.0 ± 7.9 2 kJ min−1) systems contributions were higher in the 10 × 40. Although HR and RPE responses were higher in the 20 × 20, phosphagen (during sprints) and glycolytic (during both sprints and overall protocol) were higher in the 10 × 40 protocol. Therefore, the 10 × 40 protocol seems more reasonable for developing or evaluating the anaerobic systems.

Previous studies were limited to physical measurements or included very few performance test batteries, which has hindered the determination of the best tests for predicting competition performance in weightlifters. This study aimed to examine the relationships between body composition, Wingate anaerobic power, vertical jump height, isokinetic strength, handgrip strength, trunk strength, and competition performance and to determine the best predictors of competition performance in male junior weightlifters. Sixty-seven male junior weightlifters (age 16.6±1.5 years, height 166.6±5.2 cm, body mass 67.0±9.3 kg) voluntarily participated in this study. After a national weightlifting competition, the participants were evaluated for anthropometric measurements, Wingate anaerobic power, isokinetic strength, vertical jump, handgrip strength, and trunk strength tests. The competition performance of the participants was calculated using the Sinclair equation and used as the dependent variable in statistical analysis. The correlations between the variables calculated from the five strength-power tests and the Sinclair score were significant (r=0.448 to 0.951, P≤0.05). The regression model suggested that the best predictors of weightlifting performance were Wingate mean power, the countermovement jump with arm swing, and body fat percentage, which accounted for approximately 88% of the common variance associated with competition performance in male junior weightlifters. The results of this study showed that the predictors of weightlifting performance were Wingate mean power, countermovement jump with arm swing, and body fat percentage.

Purpose: The aim of this study was to investigate the effect of plyometric and pull training added an Olympic weightlifting training program (twice a week for 8 wk) on performance and selected strength characteristics in junior male weightlifter. Material: The participants [n = 34; age: 16.03 ± 0.9 y; mass: 74.78 ± 14.86 kg; height: 170.53 ± 6.81 cm] were randomized into a pull (n = 11), a plyometric (n = 12), and a control (n= 11) groups. The groups trained 6 days a week during the 8-week study period. The pull group performed four pull exercises and the plyometric group performed four plyometric exercises added to Olympic weightlifting program for 2 days a week, and the control group performed an Olympic weightlifting program alone. Analysis of variance and Magnitude-based inferences used to determine whether a significant difference existed among groups on snatch clean and jerk total (SCT), squat (SQ), back strength (BS), countermovement jump (CMJ), 30 sec. repeated jump height (RJH) and peak barbell velocity (PV). Results: The ANOVA showed a time × group interaction for SCT, BS and RJH. The MBI indicated positive changes for SCT in control group, for BS in pull group and for RJH in plyometric group. The results for the PV decrease in plyometric and pull group indicated no significant time × group interaction, but there was a significant main effects. ASK "Inserisci l'aim" \* MERGEFORMAT ASK \* MERGEFORMAT Conclusions: The results of this study showed that the addition of pull or plyometric training to an Olympic weightlifting program interfered with weightlifting performances.

Bu çalışma, akademik araştırmalar için analiz ve raporlama süreçlerini kolaylaştırmak amacıyla geliştirilen “Kolaylaştırılmış İstatistik Programı (KİP)”in, referans yazılım SPSS (sürüm 27.0) ile karşılaştırmalı olarak değerlendirilmesini amaçlamaktadır. Çalışma, KİP’in parametrik ve non-parametrik test performansını, varsayım kontrollerindeki başarısını, grafik oluşturma yeteneklerini ve Word formatında çıktı üretim kapasitesini, analiz çeşitliliğini desteklemek amacıyla seçilen dört açık kaynaklı veri seti kullanılarak incelemektedir. Bulgular, KİP’in bu veri setlerinde SPSS ile büyük ölçüde tutarlı olduğunu, parametrik ve non-parametrik testlerde p değerleri, istatistiksel test değerleri ve etki büyüklüklerinin eşleştiğini, varsayım kontrollerinde ise tam uyum sağladığını göstermiştir. Sonuç olarak, KİP, akademik ve profesyonel kullanım için güvenilir ve kullanıcı dostu bir araç olarak öne çıkmakla birlikte, çoklu platform desteği eksikliği gibi sınırlamaları bulunmaktadır.

Electromyostimulation (EMS) and traditional resistance training (TradRT) are widely used methods for improving muscle strength and body composition. However, comparative studies employing a multi-week longitudinal design remain limited. This study aimed to investigate the effects of 20 weeks of EMS vs. TradRT on body composition and strength performance in physically active adults. Forty-six participants were randomly assigned to either the EMS group (n = 22) or the TradRT group (n = 24). The EMS group performed twice-weekly, 25-min whole-body EMS sessions, while the TradRT group completed twice-weekly, 90-min full-body resistance training sessions. Assessments of body weight, body mass index (BMI), fat percentage, and maximal strength were conducted at baseline, 10 weeks, and 20 weeks. A significant time effect was observed for all variables (p < 0.001), indicating improvements in both groups. However, group × time interactions revealed distinct adaptation patterns. The TradRT group exhibited greater reductions in body fat percentage and superior strength gains in bench press, leg press, shoulder press, and triceps pushdown, and abdominal strength. Conversely, the EMS group showed greater reductions in body weight and BMI. No significant interaction effect was observed for biceps curl strength. Both EMS and TradRT were effective in improving strength and body composition, but TradRT led to greater strength development and fat reduction, while EMS was more effective for weight and BMI reduction. These findings suggest that EMS may serve as a viable alternative for individuals unable to engage in high-load resistance training, whereas TradRT remains superior for maximizing strength and fat loss.