Physical Data
The average age, height, body weight, body mass index (BMI) and training time of the 25 athletes in the observation group and the 25 athletes in the control group were not significantly different, and there was no statistical significance (P> 0.05) (Table 1).
Table 1 Comparison of 2 groups of physical data (±s)
Data
|
Observation group(n=25)
|
Control group (n=25)
|
t
|
P
|
Average age(year)
|
20.46±1.13
|
20.51±1.18
|
0.153
|
0.879
|
Average height(cm)
|
185.43±2.61
|
186.49±2.37
|
1.503
|
0.139
|
Average body weight(kg)
|
70.52±3.68
|
70.48±3.71
|
0.038
|
0.970
|
BMI(kg/m2)
|
20.60±1.39
|
20.43±1.45
|
0.423
|
0.674
|
Average training time(year)
|
2.83±0.56
|
2.76±0.53
|
0.464
|
0.652
|
Heart Rate Before Training
The heart rate level of the observation group before starting high-intensity training from 1st week to 8th week only fluctuated about 1 time/min, and the heart rate comparison between different times showed no statistical difference (P>0.05). The heart rate of the control group fluctuated only about 2 times/min before the beginning of high-intensity training from 1st week to 8th week. The comparison of heart rate between different times did not show statistical difference (P>0.05). There was no statistically significant difference between the observation group and the control group before starting high-intensity training from 1st week to 8th week (P<0.05) (Table 2).
Table 2 Heart rate analysis before training for two groups in 8 weeks(±s)
Time
|
Observation group (n=25)
|
Control group (n=25)
|
t
|
P
|
The first week
|
73.52±4.16
|
73.95±5.04
|
0.329
|
0.744
|
The second week
|
73.59±4.58
|
73.19±5.27
|
0.286
|
0.776
|
The third week
|
73.29±4.62
|
74.18±4.52
|
0.688
|
0.495
|
The fourth week
|
74.19±5.31
|
74.18±3.55
|
0.008
|
0.994
|
The fifth week
|
74.19±5.34
|
75.26±6.39
|
0.642
|
0.524
|
The sixth week
|
73.26±3.62
|
74.18±3.83
|
0.873
|
0.387
|
The seventh week
|
73.96±4.26
|
74.18±5.02
|
0.167
|
0.868
|
The eighth week
|
73.61±5.19
|
74.18±4.27
|
0.424
|
0.673
|
t
|
0.578
|
0.635
|
|
|
P
|
0.127
|
0.327
|
|
|
Instant Heart Rate After High-intensity Training
There was no statistically significant difference in the instant heart rate between the observation group and the control group at 1st, 2nd, and 3rd week after high-intensity training (P>0.05). There was no statistically significant difference in the instant heart rate in the observation group from 1st week to 8th week after high-intensity training (P>0.05). There was no statistically significant difference in the instant heart rate in the control group from 1st week to 8th week after high-intensity training (P>0.05). The observation group's instant heart rate from 4th week to 8th week after high-intensity training was lower than that of the control group (P<0.05) (Figure 1).
Compared with the control group's instant heart rate after 1st week, 2nd week, and 3rd week after high-intensity training, the observation group showed no significant difference (P>0.05). Compared with the instant heart rate after high-intensity training at 4th, 5th, 6th, 7th, and 8th week in the control group, the observation group was lower (P<0.05). * Indicates P<0.05 between the two groups.
Heart Rate After Resuming Training
There was no statistically significant difference in heart rate between the observation group and the control group after the resuming training at 1st, 2nd, and 3rd week (P>0.05). There was no statistically significant difference in the heart rate comparison of observation group from 1st week to 8th week after high-intensity training (P>0.05). There was no statistically significant difference in the heart rate comparison of control group from 1st week to 8th week after the recovery training (P>0.05). The heart rate of the observation group was lower than that of the control group from the 4th week until the end of the 8th week of resuming training (P<0.05) (Figure 2).
Compared with the heart rate of the control group after 1st week, 2nd week, and 3rd week of resuming training, the observation group had no significant difference (P>0.05). Compared with the heart rate of the control group after 4th, 5th, 6th, 7th, and 8th week of resuming training, the observation group was lower (P<0.05). * Indicates P<0.05 between the two groups.
Subjective Physical Sensation
There was no statistically significant difference between the observation group and the control group in the scores of subjective physical sensation degree at 1st week, 2nd week, and 3rd week (P>0.05). There was a statistically significant difference in the subjective physical sensation degree scores in the observation group from 1st week to 8th week(P<0.05). There was no statistically significant difference in the scores of subjective physical sensation between the control group for adjacent 2 weeks. From the 4th week to the 8th week, the observation group's subjective physical sensation score was lower than that of the control group (P<0.05) (Figure 3).
Compared with the scores of subjective physical sensation after 1st week, 2nd week, and 3rd week of resuming training in the control group, the observation group showed no significant difference (P>0.05). Compared with the scores of subjective physical sensation after 4th, 5tth, 6th, 7th, and 8th week of resuming training in the control group, the observation group was lower (P<0.05). * Indicates P<0.05 between the two groups.
Biochemical Index
There was no significant difference in the levels of biochemical indexes hemoglobin, blood urea nitrogen, and creatine kinase before the resuming training between the observation group and the control group (P>0.05). After 8 weeks of resuming training, the observation group had a slight increase in hemoglobin, a slight decrease in blood urea nitrogen, and a slight decrease in creatine kinase. Meanwhile, in the control group, hemoglobin decreased slightly, blood urea nitrogen increased slightly, and creatine kinase increased slightly. However, there was no statistically significant difference between the two groups before and after resuming training(P>0.05). After 8 weeks of resuming training, the observation group had higher hemoglobin than the control group, blood urea nitrogen and creatine kinase was lower than the control group (P<0.05) (Figure 4).
Compared with the level of hemoglobin, blood urea nitrogen, and creatine kinase before the start of resuming training in the control group, there was no statistical difference in the observation group (P>0.05). Compared with the control group after 8 weeks of resuming training, the observation group had higher level of hemoglobin and lower level of blood urea nitrogen and creatine kinase (P<0.05). * Indicates P<0.05 between the two groups.
Physical Fitness
Before the start of resuming training, the sitting body flexion test had no statistically significant difference between the observation group and the control group (P>0.05). After 4th week and 8th week of resuming training, the results of the sitting flexion test of the two groups were gradually increased, and the difference between the groups at different times was statistically significant (P<0.05). After 4th week and 8th week of resuming training, the observation group flexion test results were higher than the control group (P<0.05) (Table 3).
Table 3 Analysis of the results of the sitting body flexion test of the two groups before and after the resuming training(±s,cm)
Group
|
Number
|
Before resuming training
|
4th week
|
8th week
|
observation group
|
25
|
18.26±2.23
|
21.13±1.97*
|
25.34±1.02*&
|
control group
|
25
|
18.31±2.29
|
19.01±1.35
|
22.16±1.24*&
|
t
|
|
0.078
|
4.439
|
9.903
|
P
|
|
0.938
|
0.000
|
0.000
|
Note: Before resuming training, *P<0.05, and after 4 weeks of resuming training, &P<0.05.