การวิเคราะห์อัตราการเต้นหัวใจและกรดแลกติกในเลือดระหว่างการแข่งขันแบดมินตันประเภทเดี่ยวของนักกีฬาระดับเยาวชน / ณธร พงษ์วิชชุลดา = Health rate and blood lactic acid analysis of junior badminton players during single badminton competition / Nathorn Pongwichulada
The purpose of this research was to analyze heart rate, energy expenditure, blood lactic acid, temporal structure and movements in junior badminton players during single badminton competition. Eight males and two females (aged 17 – 19 years) who were training with the Badminton Association of Thailand under the Royal Patronage for Youth Olympic Games in 2010 in Singapore, were purposively selected and volunteered to be subjects. The obtained data were collected in SCG All Thailand Badminton Championships 2010 and Victor Bangkok–Chiangmai Badminton Tournament 2010 and analyzed to determine means, standard deviations, independent t-test and ANOVA with repeated measures. The statistical difference at .05 significant level was determined. The results were as follow : 1.The average heart rate for male in the first round of set 1 and 2 were 169 and 179.6 beats/min and the second round of set 1 and 2 were 171.5 and 179.1 beats/min while the average energy expenditure for male in the first round of set 1 and 2 were 111.8 and 124.9 Kcal and the second round of set 1 and 2 were 119.6 and 146 Kcal and the average blood lactic acid for male during the warm up, immediately after competition finish and 5 minutes after competition were 2.5, 3.5 and 3.3 millimole respectively. The comparisons of average heart rate, energy expenditure and blood lactic acid between the first round and the second round with paired t-test were not statistically different. 2.The comparisons between average heart rates among four sets of two competitions were found that the average heart rate of subject no. 6 was statistically lower than the others. at 0.05 level. 3.From the temporal structure, an average number of rallies was 7.3 per one point. The average duration of one set was 14 minutes consisting of 5.6 minutes performance time and 8.5 minutes rest time. The middle left side of the court was the most likely area that players hit the shuttlecock (32.1%). Badminton coaches can take an advantage of these findings to develop better training program and nutrition for the success of junior badminton players in the future.
