Association Between Core Muscles Activation and the 400-Meter Overground Sprinting Velocity in Wheelchair Racers

Kumnerddee, Wipoo; Senakham, Tanormsak; Theplertboon, Aungkana; Limroongreungrat, Weerawat

doi:10.55374/jseamed.v2i2.12

Cited by 2 publications

(6 citation statements)

References 21 publications

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Section: Discussionsupporting

confidence: 90%

“…The results of the present study ( Table 5 ) showed that, in comparison with EMG variables of the rectus abdominis, only propulsion speed at R-RMS was correlated with erector spinae, which is consistent with Kumnerddee et al.’s (2018) findings. This study found no correlation between the back muscle group of the trunk and propulsion speed ( Kumnerddee et al., 2018 ). In the present study, the correlation between rectus abdominis EMG activity and propulsion speed at multiple time points suggests that athletes encounter greater resistance when trunk overcoming flexion than when trunk overcoming raising.…”

Section: Discussionsupporting

confidence: 90%

“…( Chow & Chae, 2007 ; Chow et al., 2001 ; Goosey & Campbell, 1998b ; Goosey, Fowler & Campbell, 1997 ; Moss, Fowler & Goosey-Tolfrey, 2005 ; O’Connor, Robertson & Cooper, 1998 ; Ridgway, Pope & Wilkerson, 1988 ; Sanderson & Sommer, 1985 ; Wang et al., 1995 ) and upper limb movements ( Chow et al., 2000 ; Chow et al., 2001 ; Goosey, Fowler & Campbell, 1997 ; Ridgway, Pope & Wilkerson, 1988 ; Ridgway, Wilkerson & Pope, 1987 ; Sanderson & Sommer, 1985 ; Wang et al., 1995 ; Wang, Vrongistinos & Xu, 2008 ). Despite some previous studies on the trunk kinematics of wheelchair racing athletes ( Kumnerddee et al., 2018 ; Lewis et al., 2017 ), no research has yet investigated the trunk movement of T54 wheelchair racers at different speeds using both 3D motion capture and EMG. The purpose of this study was to examine the impact of the kinematics and EMG characteristics of the trunk in T54 wheelchair racers on propulsion speeds.…”

Section: Introductionmentioning

confidence: 99%

“…While these studies focused on upper-limb EMG features in wheelchair athletes, they did not include data on trunk EMG. Currently, only one study has been conducted on the EMG characteristics of the trunk in T54 wheelchair racing athletes ( Kumnerddee et al., 2018 ), which demonstrated that abdominal function was most activated and associated with propulsion speed. Moreover, elite athletes exhibit a proclivity towards utilizing their rectus abdominis to a greater extent than their slower counterparts ( Kumnerddee et al., 2018 ).…”

Section: Introductionmentioning

confidence: 99%

“…Currently, only one study has been conducted on the EMG characteristics of the trunk in T54 wheelchair racing athletes ( Kumnerddee et al., 2018 ), which demonstrated that abdominal function was most activated and associated with propulsion speed. Moreover, elite athletes exhibit a proclivity towards utilizing their rectus abdominis to a greater extent than their slower counterparts ( Kumnerddee et al., 2018 ). A study examining daily wheelchair propulsion via trunk EMG revealed that the simultaneous activation of both the abdominal and back muscles during the initial stage of movement enhanced handrim force efficiency ( Jones et al., 1992 ), with an increase in trunk muscle activation observed as propulsion speed escalated.…”

Section: Introductionmentioning

confidence: 99%

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The effects of trunk kinematics and EMG activity of wheelchair racing T54 athletes on wheelchair propulsion speeds

Guo

Liu

Huang

et al. 2023

PeerJ

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Background The purpose of this study is to examine the impact of trunk kinematic characteristics and trunk muscle electromyography (EMG) activity on propulsion speeds in wheelchair racing T54 athletes. Method The Vicon infrared high-speed 3D motion capture system was utilized to acquire kinematic data of the shoulders, elbows, wrists, and trunk from twelve T54 athletes at four different speeds (5.55 m/s, 6.94 m/s, 8.33 m/s, and personal maximum speed). Additionally, the Trigno Wireless EMG system was employed to collect synchronous surface electromyography (EMG) data from the rectus abdominis and erector spinae muscles. The kinematics and EMG data of the trunk were compared across various wheelchair propulsion speeds while also examining the correlation coefficient between wheelchair propulsion speeds and: (1) the range of motion of upper limb joints as well as the trunk; (2) the maximum angular velocities of the upper limbs joints as well as the trunk; and (3) rectus abdominis and erector spinae EMG activity. Two multiple linear stepwise regression models were utilized to examine the impact of variables that had been identified as significant through correlation coefficient tests (1) and (2) on propulsion speed, respectively. Results There were significant differences in the range of motion (p<0.01) and angular velocity (p<0.01) of the athlete’s trunk between different propulsion speeds. The range of motion (p<0.01, r = 0.725) and angular speed (p<0.01, r = 0.882) of the trunk showed a stronger correlation with propulsion speed than did upper limb joint movements. The multiple linear stepwise regression model revealed that the standardized β values of trunk motion range and angular velocity in athletes were greater than those of other independent variables in both models. In terms of the EMG variables, four of six variables from the rectus abdominis showed differences at different speeds (p<0.01), one of six variables from the erector spinae showed differences at different speeds (p<0.01). All six variables derived from the rectus abdominis exhibited a significant correlation with propulsion speed (p<0.05, r>0.3), while one variable derived from the erector spinae was found to be significantly correlated with propulsion speed (p<0.01, r = 0.551). Conclusion The movement of the trunk plays a pivotal role in determining the propulsion speed of wheelchair racing T54 athletes. Athletes are advised to utilize trunk movements to enhance their wheelchair’s propulsion speed while also being mindful of the potential negative impact on sports performance resulting from excessive trunk elevation. The findings of this study indicate that it would be beneficial for wheelchair racing T54 athletes to incorporate trunk strength training into their overall strength training regimen, with a specific emphasis on enhancing the flexion and extension muscles of the trunk.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The effects of trunk kinematics and EMG activity of wheelchair racing T54 athletes on wheelchair propulsion speeds

Guo

Liu

Huang

et al. 2023

PeerJ

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Effects of 3D-printed Customized Gloves on the Performance of Wheelchair Racers

Roh,

Bae

2024

Korean J Sport Sci

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PURPOSE This study seeks to contribute to the enhancement of the performance of domestic wheelchair racers by producing 3D-printed customized gloves and verifying their application effect. METHODS A total of three male wheelchair racers who belong to the T54 and have won gold medals in the National Para Games within the last three years were selected as subjects. Each subject performed three session s of muscle activity and maximum speed measurements before and after applying a 3D-printed glove during the stroke and recovery phases of wheelchair racing, focusing on the pectoralis major (PM), triceps brachii (TB), and erector spinae (ES) muscles. To standardize the muscle activity measurement data, the relative muscle activity level (%) for each section was calculated by maximum voluntary isometric contraction (MVIC) for each subject. All maximum speeds of each round of driving were calculated by the average record for comparative analysis. In addition, to verify the effectiveness of applying the 3D-printed glove, the Wilcoxon signed rank test, which is a non-parametric test method, was performed on all measured values using SPSS 24.0. RESULTS This study derived the following results. First, a statistically significant difference was observed in the muscle activity of each major muscle before and after using the 3D-printed glove. In common, an increase in muscle activity of the PM, TB, and ES was confirmed in the stroke section, and an increase in muscle activity of the TB was confirmed in the recovery section. Second, a statistically significant difference was documented in the maximum speed before and after using the 3D-printed glove. When using 3D-printed gloves, the maximum speed increased by 4.57, 3.63, and 1.06km/h for Payer A, and by 5.9, 6.04, and 7.86km/ h for Player B. In the case of Player C, the speed increased by 6.73, 2.27, and 0.83km/h, and all three players improved their maximum speed through the 3D-printed gloves.CONCLUSIONS Our study suggests that the application of 3D-printed customized gloves can have a positive impact on the performance of wheelchair racers. If the application of 3D-printed customized equipment is extended to athletes in a wider range of sports in the future, this could significantly contribute to the improvement of performance in domestic disability sport.

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Association Between Core Muscles Activation and the 400-Meter Overground Sprinting Velocity in Wheelchair Racers

Cited by 2 publications

References 21 publications

The effects of trunk kinematics and EMG activity of wheelchair racing T54 athletes on wheelchair propulsion speeds

The effects of trunk kinematics and EMG activity of wheelchair racing T54 athletes on wheelchair propulsion speeds

Effects of 3D-printed Customized Gloves on the Performance of Wheelchair Racers

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