Rat Tongaim. Response time velocyty and force of the jab punch by Thai national amateur boxers. Master's Degree(Sports Science). Mahidol University. Mahidol University Library and Knowledge Center. : Mahidol University, 2009.
Response time velocyty and force of the jab punch by Thai national amateur boxers
Abstract:
The purpose of this study is to develop an instrument to simultaneously measure response
time and force of the punch as well as demonstrate its application. The equipment consisted of six load
cells with six LEDs stimuli aligned at different positions. The software was developed by using
LabVIEW to control the equipment and obtain the data from load cells. A high speed camera was used
to determine the wrist velocity of the punching hand.
Thai national amateur boxers (boxing group, BG; five male and five female; mean age
18.70±2.79 years, mean weight 55.75±5.03 kg and mean height 167.10±7.62 cm) and Taekwondo
athletes of Mahidol University team (Taekwondo group, TG; five male and five female; mean age
19.10±0.57 years, mean weight 59.68±9.83 kg and mean height 168.85±5.78 cm) were recruited as
participants in this study. Participants were asked to warm up and stretch and were instructed to jab the
target as fast as and as accurately as they could when the LEDs that corresponded to the target came on.
Six punches per target by randomized order of target constituted one trial. Three trials were collected
and the data averaged before analysis.
The result shown by response time was not statistically significantly different between
BG and TG or between target positions for each individual participant. Velocity of the wrist was
statistically significantly different for all targets between BG and TG. In BG, there was no statistically
significant difference between any targets. In TG, there was a statistically significant difference between
the 1st and 5th target position (p = .025), the 2nd and 3rd (p = .002), the 3rd and 4th target position (p =
.010) and the 4th and 5th target position. Force of the jab punch was statistically significantly different in
the 3rd (p = .044) and the 5th (p= .018) targets between the BG and TG. In BG, there was a statistically
significant difference between the 2nd and the 5th (p = .046) targets for each participant, but in the TG
there was none.
The study demonstrates that BG and TG were significantly different in wrist velocity and
jab force while response time was not. The results can be used to suggest coaches and practitioners
should focus on poor target response time, velocity and force in a training program.