The purpose of this study was to determine whether the antioxidants in catechin reduce biomarkers of oxidative damage and mechanical muscle damage following a treadmill exercise at 70% MHR for 30 minutes. Thirty healthy subjects aged 18-22 years old were randomly assigned into 3 groups of 10 each. Group 1 received placebo while group 2 and 3 received 254 and 381 mg. single dose of catechin extract, respectively. In the exercise phase, the subjects started with 3 minutes walk-jog on the thread mill and then increased the speed until the subject heart rate reached 70% MHR and maintained this intensity until 30 minutes. The measurements and blood samples were taken pre- and post-exercise immediately and after 24 hours. Blood samples were analyzed for creatine kinase (muscle damage), lactic acid and malondialdehyde. Data analysis revealed that there was no significant difference of malondialdehyde, lactic acid and creatine kinase between catechin intake and placebo groups at any exercise periods (pre-and post-exercise, and 24 hour after). However, there was a significant difference of malondialdehyde, lactic acid and creatine kinase between catechin intake and placebo group. These results suggest that the protocol did induce oxidative stress and mechanical muscle damage. Morever, the results show no relationship between delayed onset muscle soreness and oxidative stress. This may be due to the protocol design and catechin extract dosage. Delayed onset muscle soreness was not related to oxidative stress production, and catechin supplementation did not attenuate markers of oxidative stress nor muscle damage in this study
The purpose of this research was to examine the effect of creatine monohydrate supplementation on muscle fitness of Ho Chi Minh City (HCMC) basketball players after 8 weeks of resistant training. In this study twelve male athletes of Ho Chi Minh basketball utilized a two–group match. Randomly assigned design in a single-blind fashion to either creatine (n=6, mean age: 25.50±2.95 years) or placebo (n=6, mean age: 23.83± 4.12 years) group with 8 weeks of resistant training was measured for muscular fitness: muscular strength used 1-RM testing for upper body strength (bench press test), leg strength (leg press test), handgrip test, and Sergeant jump test; muscular power used Wingate Anaerobic 30 cycle Test to evaluate Peak Power Output (PP); muscular endurance used Curl Up Test to evaluate abdominal strength. All data were analyzed by computer statistical program. Significant level was set at 0.05 The results of this study showed that there was a significant difference between creatine (105.00±13.784 kg) and Placebo group (85.00 ±15.166 kg) in mean bench press leg press (218.33±23.166(kg); 191.67±13.292 kg) and peak power (898.283±63.590 W; 831.000±32.437 W), relative peak power (11,967±0.585 W/kg; 10.917±0.741W/kg) and anaerobic capacity (9.517±0.256 W/kg; 9.000±0.410 W/kg). The muscular endurance was not statistically significant difference. It was concluded that after 8 weeks using creatine supplementation combined with resistant training and Creatine supplementation did not effect on muscular endurance, but had differences in the aspect of statistic significance in muscular strength and muscular power of HCMC basketball athletes.
OBJECTIVES: This descriptive research was aimed at examining the predicting factors of physical activity among university students. MATERIAL AND METHODS: Four hundred undergraduate students at Burapha University, Bangsaen campus, were invited to participate in this study. Data were collected by using questionnaires and multiple linear regressions statistic was used for analyzing the predicting factors of physical activity. RESULT: The research findings revealed that 41 percent of the research participants had a high level of physical activity. Their perceived self-efficacy (ß = 0.43, p < 0.01), interpersonal influences (ß = 0.19, p < 0.01) and perceived benefit (ß = 0.14, p < 0.01) were the significant predictors of physical activity, accounted for 37.9 % of the variance. CONCLUSION: Encouraging young adults to take care of their own health and motivating them to engage in physical activity organized by university health promotion agencies would finally result in their health benefits. Strategies targeted at physical activity, perceived self–efficacy, interpersonal influences and perceived benefit of physical activity should be developed for promoting behaviors of physical activity and exercise.
The aim of this study was to explore the combined effect of imagery with instrumental music, and aromatherapy on the muscle tone and heart rate in university student athletes. The participants were 20 student athletes at Burapha University (10 males and 10 females). The participants were randomized into two groups (10 in each group): 1) the seated rest group, and 2) the imagery with instrumental music and aromatherapy group. The instruments included a biofeedback measurement (microvolts: µV), a program comprising imagery with instrumental music, an ergometer bicycle, a lavender oil sprayer, and an heart-rate monitor. The experimental design included moderate exercise on an ergometer bicycle at 75% of maximum heart rate and a 1-minute rest before starting the experiment. The data were collected using pre/post tests and recorded in 4 states (recorded every 4 minutes). The statistics used to analyze the data were mean, standard deviation, and the Wilcoxon matched-pairs signed-ranks (WSR) test. The following results were found: 1. The EMG data means of quadriceps muscle decrease in the control group were 13.49, 9.26, 7.09, 4.30, and 2.41 µV. The means of the experimental group were 12.13, 6.02, 3.26, 1.99, and 0.96 µV. Moreover, The EMG analysis found a significant difference at .05 between the control and the experimental group in state 3. 2. The means of the measured heart rates decreased in the control group and were 151.40, 136.40, 122.20, 113.10, and 101.00 bmp. In addition, the means of the measured heart rates decreased in the experimental group and were 151.20, 112.20, 98.50, 87.70, and 82.40 bmp. The results of the HR analysis showed a significant difference at .05 in state 1 and state 4.
'%3e%3cpath fill='%23012169' d='M0 0v30h60V0z'/%3e%3cpath stroke='%23fff' stroke-width='6' d='m0 0 60 30m0-30L0 30'/%3e%3cpath stroke='%23C8102E' stroke-width='4' d='m0 0 60 30m0-30L0 30' clip-path='url(%23b)'/%3e%3cpath stroke='%23fff' stroke-width='10' d='M30 0v30M0 15h60'/%3e%3cpath stroke='%23C8102E' stroke-width='6' d='M30 0v30M0 15h60'/%3e%3c/g%3e%3c/svg%3e)