Effects of Plyometric Training with Rubber Jumping on Muscle Strength and Physical Fitness Performance of Students School Border Patrol in Chanthaburi Province

Abstract

              This research was to study the effect of plyometric training on muscle strength (Muscle of Leg) and physical fitness of students at Border Patrol Police School in Chanthaburi Province. It is a  quasi-experimental research. The study was conducted with a sample group of 78 male and female volunteers had In grade 4-6 aged 10-12 years participating in the training program. Plyometrics with rubber jumps been created by the researchers for 4 weeks. Data were collected prior to training  after the 1st week of training, after the 2nd week of training, after the 3rd week of training, and after the 4th week of training, testing strength of muscle using a Leg Dynamometer, comparing the  mean difference of test results before and after training and by gender. The mean difference of pretest results were compared after interval training with one-way repeated-measures ANOVA. When classified by gender the relationship between the strength of the lower back muscles after training affected four items of physical fitness test items, namely, sitting and bending forward 30 seconds of applied push-ups, 60 seconds of sit-ups and 3 minutes of standing up and down tests, and comparing the results of general physical fitness tests with physical fitness standards of elementary school students                (aged 7-12 years) of the Office of Sports Science, Department of Physical Education, Ministry of Tourism and Sports, 2019, classified by age. The study results were as follows:

1. The lower muscle strength (Muscle of Leg) of both males and females was higher. For comparing the commencement of the training program, the mean males were 1.71 kg, the standard deviation 0.64. After the training week 1, 2, 3 and 4, the mean was 1.89, 2.02, 2.06, 2.12 kg, and the standard deviation was 0.62, 0.63, 0.64, 0.64, respectively.


2. For comparing the mean difference of lower muscle strength (Muscle of Leg) test results over time with the repetitive statistical variance measure, it was found that males had differences in training results. The time interval between pre-training and post-training at Weeks 1, 2, 3 and 4 was statistically significant at the .05 level (Wilks' Lambda statistic: 0.27, F = 20.76, Sig. at .00) with females, there was a difference in interval training results between pre-training and post-training weeks 1, 2, 3 and 4 at the .05 level (Wilks' Lambda statistic was 0.25, F was 28.55, Sig. was at the .00 level).


3. The relationship between lower muscle strength and overall physical fitness test results of four items, both males and females, it was found that the strength after training was the most correlated with the 60-second sit-up test (with a correlation coefficient of 0.30 Sig., at the .05 level). It was a moderate correlation, followed by a 3 minute standing test with knees raised and down (having a correlation coefficient of 0.27 Sig. at the .05 level, a low correlation) (Songsak Phusri-on, 2013: 130). For the applied 30-second push-up test and the sitting-forward bent test item, there was no relation to strength or level correlation very low to insignificant.


4. For physical fitness results compared to benchmarks, males aged 10 years had a very good level with a 60- second sit-up test (times) ( = 38.64, S.D.= 9.48), a good level of a 30-second applied push-up test item (times) ( =24.54, S.D. = 4.53), a 3-minute standing test with knees raised up and down (times) (  = 143.45, S.D. =29.51), and a low level of sitting-bending forward (cm) ( =6.99,  S. D.=5.60).

        For males aged 11 years, a good level included a 3-minute of knees raised up and down (times) ( =153.75, S.D.=25.45), and a moderate level of a 3o-second applied push-up test (times) ( = 21.92, S.D. =4.40), a 60-second sit-up (times) ( = 29.08, S.D.=4.88), a 60-second sit-up (times) ( = 29.08, S.D.4.88), and a low level is the sitting-bending forward test item (cm) ( =7.46, S.D. 5.22)

For 12-year-old volunteers, a good level included a 3-minute standing test with a 3-minute of knees raised up and down (times) (  = 161.00, S.D. =54.55), a moderate level of a 3o-second applied push-up test item (times) (  = 22.90, S.D=6.54) a 60-second sit-up (times) ( = 30.36, S.D.=6.68) and a low level is a test item of sitting-bending forward (cm) (  =6.53, S.D. = 4.73).

For females aged 10 years, a good level consisted of standing with knees raising test (times)  (  =141.53, S.D.= 39.03), a moderate level of a 30-second applied push-up test item (times) (  = 16.40, S.D.= 64), a 60-second sit-up (times) (  = 24.40, S.D.=3.26), and a low level is a bending forward test item (cm) ( = 5.74, S.D.=8.21).

For 11-year-old volunteers, a moderate level included a 60-second sit-up test (times)   (  = 24.73, S.D. =4.94), a 3-minute standing test with knees up and down (times) (  =134.47,  S.D.=31.74), a 30-second applied push-up test item ( = 15.13, S.D. = 3.44), and sitting-bending forward ( =5.82, S.D.=4.94).

For 12-year-old volunteers, a good level included a 60-second sit-up test (times) (  = 23.50, S.D.=3.26), a 3-minute standing with knees up and down test (times) (  = 141.17, S.D.=19.81), a moderate level consisted of a 30 second applied push-up test item (times) (  = 17.50, S.D. = 3.58), and a low level is a sitting-bending test item (cm) (  = 8.49, S.D.=5.51)