優秀劍道選手上肢等速肌力與打擊速度相關性之研究

Relationship between Isokinetic Strength and Striking Speed in the Upper Limbs of Elite Kendo Athletes

陳安寶(An-Pao Chen)

《北體學報》 7期 (2000/04) Pp. 128-145

https://doi.org/10.6167/TPEC/2000.7.11

摘要

The purpose of the study was to investigate the relationship between striking speed and isokinetic strength in the upper limbs of kendo athletes. Fifteen subjects including post-collegiate athletes, college students, and high school students with average age of 22.47±3.02, height of 172±3.65cm, weight of 67.26±6.53kg, experience of 8.13±1.81 years, and certified level of 2.27±1.03dan. Biomechanical parameters of shinai striking with three different angles: 60, 180, 300 degree/sec were tested in the study. The values of contractile speed, strength, ratio of peak torque to body weight (absolute strength), average power, and percent ratio of average power to strength under the three different angular speeds were obtained. The data of isokinetic strength, maximal angular speed, and average acceleration within 0.05 sec before striking were used for Pearson's correlation analyses. One-way ANOVA was also utilized for comparison among three different age groups.
Following results were found:
1. In striking speed, the maximal angular speed was 1481.15±140.55 degree/sec. In seventy five percent of the subjects, the maximal striking speed was not occurred at the moment of striking on the target. The angular speed was about 1273.09±84.73 degree/sec 0.05 second before striking. No significant differences were found in angular speed among all three groups.
2. Significant correlation was found between the isokinetic speed of ulnar/radial deviation of the wrist and the angular speed measured 0.05 sec before striking (p＜0.05). Additionally, no significant relationship was found between the isokinetic speed of ulnar/radial deviation of the wrist and the maximal angular speed. Furthermore, significant difference was found between the isokinetic speed of ulnar/radial deviation of the wrist and the angular speed (p＜0.05).
3. Significant correlation was found between the right side of elbow extension/flexion and the maximal angular speed. Additionally, significant correlation was also found between the left side of elbow extension/flexion and the angular speed measured 0.05 sec before striking (p＜0.05). Furthermore, significant correlation was found between the elbow extension/flexion on both sides of the arm and the average angular speed.
4. No significant correlation was found between the isokinetic strength of shoulder flexion/extension and striking speed. This is probably due to the neuromuscular adaptation to small-angle striking in trained kendo athletes. Another possibility was that the experimental condition was confined in the striking position without moving forward. This will probably made the observation to non-significant. Our previous observation found that the removal of the experimental condition made the value more statistically significant.
5. No significant was found between the relative strength and the striking speed.
6. The isokinetic strength of upper limbs in kendo athletes (in the order of wrist, elbow, and shoulder) was: 1.Angular speed at 60 degree/sec, right hand: 1:1.44:3.67; 2. Angular speed at 60 degree/sec, left hand:1:1.07:1.96; 3. Angular speed at 180 degree/sec, right hand:1:1.40:3.81; 4. Angular speed at 180 degree/sec, left hand: 1:0.96:2.09n; 5. Angular speed at 360 degree/sec, right hand: 1:1.38:3.70; 6.Angular speed at 360 degree/sec, left hand: 1:0.88:1.80.

關鍵字

上肢關節 ； 等速肌力 ； 劍道 ； MEN面部 ； 角速度 ； 角加速度

並列摘要

The purpose of the study was to investigate the relationship between striking speed and isokinetic strength in the upper limbs of kendo athletes. Fifteen subjects including post-collegiate athletes, college students, and high school students with average age of 22.47±3.02, height of 172±3.65cm, weight of 67.26±6.53kg, experience of 8.13±1.81 years, and certified level of 2.27±1.03dan. Biomechanical parameters of shinai striking with three different angles: 60, 180, 300 degree/sec were tested in the study. The values of contractile speed, strength, ratio of peak torque to body weight (absolute strength), average power, and percent ratio of average power to strength under the three different angular speeds were obtained. The data of isokinetic strength, maximal angular speed, and average acceleration within 0.05 sec before striking were used for Pearson's correlation analyses. One-way ANOVA was also utilized for comparison among three different age groups.
Following results were found:
1. In striking speed, the maximal angular speed was 1481.15±140.55 degree/sec. In seventy five percent of the subjects, the maximal striking speed was not occurred at the moment of striking on the target. The angular speed was about 1273.09±84.73 degree/sec 0.05 second before striking. No significant differences were found in angular speed among all three groups.
2. Significant correlation was found between the isokinetic speed of ulnar/radial deviation of the wrist and the angular speed measured 0.05 sec before striking (p＜0.05). Additionally, no significant relationship was found between the isokinetic speed of ulnar/radial deviation of the wrist and the maximal angular speed. Furthermore, significant difference was found between the isokinetic speed of ulnar/radial deviation of the wrist and the angular speed (p＜0.05).
3. Significant correlation was found between the right side of elbow extension/flexion and the maximal angular speed. Additionally, significant correlation was also found between the left side of elbow extension/flexion and the angular speed measured 0.05 sec before striking (p＜0.05). Furthermore, significant correlation was found between the elbow extension/flexion on both sides of the arm and the average angular speed.
4. No significant correlation was found between the isokinetic strength of shoulder flexion/extension and striking speed. This is probably due to the neuromuscular adaptation to small-angle striking in trained kendo athletes. Another possibility was that the experimental condition was confined in the striking position without moving forward. This will probably made the observation to non-significant. Our previous observation found that the removal of the experimental condition made the value more statistically significant.
5. No significant was found between the relative strength and the striking speed.
6. The isokinetic strength of upper limbs in kendo athletes (in the order of wrist, elbow, and shoulder) was: 1.Angular speed at 60 degree/sec, right hand: 1:1.44:3.67; 2. Angular speed at 60 degree/sec, left hand:1:1.07:1.96; 3. Angular speed at 180 degree/sec, right hand:1:1.40:3.81; 4. Angular speed at 180 degree/sec, left hand: 1:0.96:2.09n; 5. Angular speed at 360 degree/sec, right hand: 1:1.38:3.70; 6.Angular speed at 360 degree/sec, left hand: 1:0.88:1.80.

並列關鍵字

Isokinetic strength in upper limb ； Kendo ； Men ； Angle ； Angular speed ； Angular accelerations