2.2 Experimental method
The experimental model process is shown in Fig. 1.The physical control of the athletes in both groups was assessed prior to training using the FMS test. The seven-movement test (deep squat, hurdle step, inline lunge, shoulder mobility, active straight leg raise, trunk stability push-up and rotary stability) developed by Gray Cook. The action demonstration is shown in Fig. 2.
The control group followed the traditional physical training components of postural control exercises, and the experimental group designed the athletes' FMS functional movement training program based on the assessment results. In conjunction with the FMS training model and the Aerobic Athlete Training System (AATS), a two-phase training program was developed over a 12-week period. Stage I(corrective training), lasted from 1 to 4 weeks and the training program as follows Table 2.
Table 2
FMS Functional Training Schedule Phase I (Corrective Training Phase)
No | Exercise Method | Deep squat | Hurdle step | Inline lunge | Shoulder mobility | Active straight leg raise | Trunk stability push-up | Rotary stability |
1 | Static steady state | Supine hip extension | Unilateral straight leg back bridge | Straddle hip external rotation control | Thoracic spine stretch | Supine leg raise control | Prone support | Unilateral support |
2 | Dynamic motion | Bulgarian split squat | Glute bridge hip lift | Squatslu-nges | Straight arm high five | Dead-lift | push-up | Dynamic anti rotation |
Single leg squat loaded squats | Box step rotation | Kneel down on one knee and twist | reverse support bridge | Alternate kicks while lying on your back | Push-ups with one foot on a medicine ball | Single leg hip bridge abduction |
Phase II as total movement (functional patterning),which ranges from week5 to week12. At the same time, the design concept of the training program is expressed in the increase in difficulty, also includes the process of moving from static stability to dynamic stability and then finally training the whole movement pattern. Training tools: Balance disc, Swiss ball, solid ball, foam shaft, massage stick. The training content is as follows Table 3.
Table 3
FMS Functional Training Schedule - Phase II (Elevation Training Phase)
No | Exercise Method | Exercise Parts | Exercise Content | Load | Equipment |
1 | Static steady state | Hip | Gluteal bridge | 30S/group, total 4 groups | Swiss Balls |
Gluteal bridge - Military stance bent knee pose | 30S/set, 4 sets | Foam Shaft |
Spine lumbar segment | Hand push-up bridge | 30S/set, 4 sets | Solid Balls |
side bridge | 30S/set, 4 sets | Balance Plate |
Shoulder | Press the bar against shoulders prone support | 30S/set, 4 sets | Swiss Balls |
2 | Dynamic motion | Hip | Suction leg jumps | 8reps/set, total 4 sets | Mats |
Lunge jump | 8 reps/set, total 4 sets | Mats |
Spine Lumbar | Side parallel turning face high five | 8 reps/set, total 4 sets | Cushion |
Arc cross step | 8 reps/set, total 4 sets | Balance Plate |
Shoulder | Aerobics arm routine | 8 reps/set, total 4 sets | Mats |
push-up shoulder circle | 8 reps/set, total 4 sets | Mats |
Through the FMS screening score, respectively, the low-scoring items for athletes to train, in the training program from the hip, lumbar spine section, shoulder joints, respectively, three parts to carry out targeted training: |
First of all, the hip part of the training content, the hip is an important part of body posture control, the hip can activate the muscles around the pelvis, and then improve the stability of the pelvis, the improvement of pelvic stability will naturally improve the stability of lower limb movement, laying the foundation for the transmission of lower limb power. In the training process, for the hip area training, gluteal bridge, gluteal bridge - military stance bent knee pose and other training methods were used. In the training load static support movements control in 30s for a group, dynamic exercises Suction Leg Jumps, Lunge Jump and other movements control in 10 times for a group, each time to carry out 4 groups, the interval of 60-90s. adopt the above training methods is mainly to improve the stability of the hip, and at the same time to increase the deep development of small muscle groups of the hip, to better improve the FMS score and body control ability.
Second, the spinal lumbar training content, the spinal lumbar section is the core of the relationship between the whole trunk strength, in the trunk strength of the spinal lumbar section relationship for the upper and lower power transmission, as well as control to provide a strong core control ability. Dancers are at an increased risk of low back pain (LBP) and lower extremity (LE) musculoskeletal injuries due to repetitive high velocity end range movements[20].In the training process for the spinal lumbar segment, hand push-up bridge, side bridge, side parallel turning face high five, arc cross step and other exercises are used, and in the static support movement training load can be controlled in 30s for a group, and the dynamic support movement is controlled in 8 times for a group, 4 groups each time and the dynamic support movement is controlled in 8 times for a group, 4 groups each time and the dynamic support movement is controlled in 8 times for a group. The static supporting movements can be controlled at 30 seconds for one set, and the dynamic supporting movements can be controlled at 8 times for one set, 4 sets each time, with an interval of 30–90 seconds. Through the above methods to recognize the activation of the core pillar deep muscle groups, enhance the stability of the lumbar spine section, improve the lumbar spine section of the power center transmission and control ability.
Table 4
Training Schedule for control group
Week | Training content | Load | Equipment |
1–2 | Sit-ups | 8 reps/4 | Mats |
Push-up | 10 reps/4 | Mats |
Prone back raise | 10 reps/4 | Mats |
Supine alternating leg Raises | 20 reps/4 | Mats |
Squat | 8 reps/4 | Mats |
3–6 | Kick-high | 10 reps/4 | Mats |
Plank support | 30 s/4 | Mats |
Push-up | 8 reps/4 | Mats |
Roll-ups | 12 reps/4 | Mats |
Bobbi Jump | 10 reps/4 | Mats |
7–10 | Russian somersault | 12 reps/4 | Mats |
Push-up | 8 reps/4 | Mats |
Supine Straight Leg Raise | 10 reps/4 | Mats |
Knee lift | 10 reps/4 | Mats |
Calf raise | 15 reps/4 | Mats |
11–12 | Push-up | 15 reps/4 | Mats |
Roll-ups | 20 reps/4 | Mats |
Sidestep | 10 reps/4 | Mats |
Open and close squat | 15 reps/4 | Mats |
lunge | 15 reps/4 | Mats |
Finally, the content of shoulder training, in functional movement training, the shoulder is the main part related to the control ability of the upper limbs, body posture control is the result of complex interactions between many systems and structures, and appropriate posture is necessary to initiate sustained movement of different parts (e.g. upper limbs) [21]. Shoulder training uses a combination of flexibility, mobility and strength training, bar shoulder presses, prone supports, aerobic arm combinations and overhead shoulder rounding. In the training load, static support movements are controlled in 30s as a group, dynamic support movements are controlled in 10s as a group, 4 groups are performed each time, with an interval of 30-90s.The experimental research is shown in Table 4.
2.3 Measuring instrument
A questionnaire was used to collect basic information on the athletes' age, height, weight and lung capacity. A 12-week training intervention was conducted from June 2023 to August 2023, with pre-intervention testing of FMS scores as the primary outcome and testing of baseline Y-jump times and competitive performance as secondary outcomes.
(1) Seven FMS tests. These included deep squat, hurdle step, inline lunge, shoulder flexibility, active straight leg raise, trunk stability push-up and rotational stability. The main equipment included: a set of FMS testers, a roll of yellow tape, a tape measure, a stopwatch and a test chart for each index.
(2) Posture control test. Test indexes and test requirements Lai Chung-ming, in his doctoral thesis "Comparative study of electromyography of stable and unstable exercises under different loads", proposed that postural control refers to an initiative of the body to maintain, achieve or restore the state of equilibrium at rest or in motion[22]. The test of body postural control under the condition of static movement surface change was divided into three parts: ① reflecting the control ability of the subject's body postural stability in the sagittal and horizontal planes under the static condition, an eight-step prone bridge test was selected; ② reflecting the control ability of the subject's body postural stability in the frontal plane under the static condition, a five-step lateral bridge test was selected; and ③ reflecting the subject's abdomen of the torso region under the static condition, back and hip in the sagittal axis on the body posture stability control ability, selected six supine bridge test.
(3) The body posture control test under the conditions of dynamic movement surface change, mainly using the suction leg lift, T-type running and Y-type jumping, to examine the control ability of the unilateral lower limb of the aerobic athlete's body posture in the rapid and dynamic state. The experimental process is shown in Fig. 3.
(4) Aerobics competitive performance test. Four groups of difficulty combinations ABCD and single competition routines were used for comprehensive scoring, and the scoring rules were adopted from the FISA Scoring Rules for Competitive Aerobics for the 2022–2024 Cycle[23].