Effects of the movement velocity training on sprint performance / 体力科学

To investigate the effects of training focused on the movement velocity of the lower limbs (movement velocity training) on short sprint performance in young female non-athletes. Twenty-nine healthy young females (mean age: 20.1 ± 0.9 years) participated in this study. The subjects were randomized into a movement velocity training group (MV group, n=15) and a resistance training group (R group, n=14). MV group performed six lower limb exercises at high velocity (as fast as possible) with no load. R group performed five lower limb strength exercises using a resistance band. Both training programs were applied for 20 minutes per session, 5 days a week for 6 weeks. The following outcomes were measured at baseline and after 6 weeks of training: 30 m sprint time, 20- 26m running velocity, step length, step frequency, and muscle strength and movement velocity of knee extension. Significant group × time interactions were observed for the 30-m sprint time with the MV group exhibiting a significant improvement on simple main effect analysis. For the other parameters (step length, step frequency, and muscle strength and movement velocity of knee extension), group × time interactions were not observed and a significant main effect was observed. These findings suggest that training focused on the movement velocity of the lower limbs can be effective for improving sprint performance.

Visual Reaction Time And Visual Anticipation Time Between Athletes And Non-Athletes

@#An experimental investigation was conducted to explore visual reaction time and visual anticipation time between athletes and non-athletes. These visual perceptual skills form the base for cognitive processes required by the brain to respond instantaneously to a stimulus. A total of 228 adolescents, equally distributed between athletes and non-athletes, aged 13 to 16 years (mean age 14.69 ± 0.99 years) were examined. The visual reaction time and visual anticipation time were measured using a Lafayette Reaction Timer (Model 63035) and Bassin Anticipation Timer (Model 35575) respectively. The visual reaction time results revealed that athletes have faster reaction time scores as compared to non-athletes, whereas with visual anticipation time, athletes had fewer errors and a higher consistency compared to non-athletes. There was, however, no interaction between gender and sports participation noted for both these visual perceptual skills. These research findings indicate that gender was not an obstacle in sports participation, therefore not limiting the potential to excel in sports performance. Knowledge gained from these research findings will benefit the sports industry, specifically in athletic and sports training as well as provide a basis for the identification of an individual’s potential in their sports.

Self-perception of Venous Symptoms and Quality of Life Analysis in Wheelchair Athletes and Non-athletes: A Pilot Study.

Aims: Evaluate the impact of the physical activity in individuals with muscular atrophy on the inferior members (wheelchair users) considering two main aspects: the quality of life and the self-perception of the venous return symptoms. Place and Duration of Study: Data of handicapped non athletes were collected from a universitary physiotherapy clinic at the University of Ribeirão Preto, Ribeirão Preto, São Paulo, Brazil. Data of the athletes’ sample (basketball players) were obtained from Cava do Bosque, Ribeirão Preto, São Paulo, Brazil, between September 2013 and December 2013. Methodology: This is a cross-sectional study, with a convenience sampling of wheelchair users: non athletes (n=12) and athletes (n=13). A socio-demographic questionnaire was applied. Self-perception of functional performance and of venous symptoms was evaluated by the VEINES-QOL/Sym, and the quality of life was evaluated by the WHOQOL-Bref. The statistical analysis was performed by the Chi-square test for VEINES-QOL/Sym, Student’s t-test for WHOQOL-Bref and Student’s t-test, proportion test and G-test for the socio-demographic questionnaire. Results: Twenty-three subjects were men (92%). Data of physical conditions, environmental and psychological domains from WHOQOL-bref questionnaire demonstrated no significant differences between the groups. On the other hand, social relations domain had higher values in athletes compared to non athletes (P<.05). Results from VEINES-QOL/Sym questionnaire (the questions 1, 2, 3, 4(a, b, c), 5(b, c), 6, 7 and 8 showed no statistically significance between the groups. Analyzing the 4d (leisure activity) and 5a (time spent for daily activities) questions, higher values were observed for the athletes (P<.05). Conclusion: Considering the data obtained by WHOQOL/Bref survey, physical exercise improves the quality of life of wheelchair individuals. However, it has not been possible to establish the relationship between physical exercise and the improvement of self-perception on venous symptoms in wheelchair individuals.

Intra-familial transmission of Trichophyton tonsurans / 대한의진균학회지

Trichophyton(T.) tonsurans was an anthropophilic dermatophyte and has not been prevalent in Korea yet. Especially the infection of non-athletic patient was very rare and only 7 cases have been reported so far in Korea. We report 1 case of tinea capitis and 2 cases of tinea faciei due to T. tonsurans in a family, i.e grandfather, grandmother and grandson. Grand father and grand mother had pruritic scaly erythematous macule on their face and grandson had a 10 x 10 cm sized alopecia with black dots on the scalp. We confirmed T. tonsurans in all cases based on the microscopic findings and fungal culture. Although we could not confirm the source and the exact transmission route, these patients are not athletes and none of them had contact history with any athletes. So we think that T. tonsurns might have been already spreading among general population of Korea.