The Effect of Eight-week Specific Core Training on Core Stability, Balances and Jumps in Young Rhythmic Gymnasts
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 44
- 试验地点
- 2
- 主要终点
- Balance results from expert judging
研究概览
简要总结
The aim of the study is to evaluate the effect of an eight-week specific Core Stability Training (CST) on young rhythmic gymnasts. The literature suggests CST may help improve sport performance, however, more studies implementing functional CST and accurate methodology are needed to validate this statement. Little is known about Core Stability (CS) and Rhythmic Gymnastics (RG). The study intends to find out whether CST contributes to the Rhythmic gymnasts core stability, balances and jumps execution enhancement, very important RG performance determinants. It is hypothesized the rhythmic gymnasts will increase their CS, balances and jumps performance once the specific CST is conducted.
详细描述
Gymnasts were recruited from the Gymnastics Club "Gimnàstica Muntanyenc". All participants were rhythmic gymnasts who had at least two-year experience competing in RG at regional federated and school competition level and trained three times per week. Individuals who didn't meet these criteria or were injured at the moment were excluded. The participants were invited to take part in the study voluntarily, and along with their parents were informed verbally and in writing as to the characteristics of the program. Parents or legal guardians signed informed consent forms, and a document that explained the objectives and planned activities of the provided program. The study was approved by the FPCEE Blanquerna Research Ethics Committee. All protocols applied in this research (including the management of the personal data of the participants) complied with the requirements specified in the Declaration of Helsinki of 1975 and its subsequent revisions.
The specific CST program is aimed for Rhythmic gymnasts between 8 and 15 years of age who train in the competitive group and their goal is to improve their RG level. All the study participants were asked to sign an informed consent document that was drafted in keeping with all applicable research ethics protocols, including a guarantee of the confidentiality of personal data and an assurance that participants can choose to abandon the study at any time.
Control group (CG), experimental group (EG) and pre-test, post-test methodology was selected. EG performed the specific CST while CG carried out the traditional RG training.
The CST intervention had been carried out over the course of one academic year (2018-19). The first 3 months allowed investigators to recruit the participants and design the CST adapted to the Rhythmic gymnasts and pursuing the highest specificity for the CS exercises. This design took into account prior experiences of a CS physiotherapist expert and a RG national coach. The load of the sessions was controlled according to a Rate of Perceived Exertion (RPE) scale, a valid method of quantifying exercise training during a wide variety of types of exercise. A training protocol trial will be applied where the subjects will be asked to point out which is their perceived exercise intensity, thirty minutes after the training ends. The repetitions will be adjusted to the 7-8 RPE scale values (very hard) allowing the correct execution of the exercises to the participants and yet permitting adaptations produced by the training. The conclusions drawn from this initial experience formed the scientific basis for the definitive version of the CST.
During the fourth month a pre-test was carried out including an anthropometric study of the gymnasts, three CS tests, seven balance tests and six jump tests. The participants warmed up before each test except for the anthropometric study and the order of the subjects and the order of the applied tests were randomly determined using a true random number generator to avoid order effects. A group blinded specialized physiotherapist conducted the anthropometric study and the CS tests, and a group blinded RG expert led the rest of the tests.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Other
- 盲法
- Single (Outcomes Assessor)
盲法说明
The assessment of the test is conducted by masked assessors (judges and physiotherapists)
入排标准
- 年龄范围
- 8 Years 至 15 Years（Child）
- 性别
- Female
- 接受健康志愿者
- 是
入选标准
- •Competition Gymnasts from Club Muntanyenc Sant Cugat training minimum 3 times per week
排除标准
- •Injured Gymnasts
结局指标
主要结局
Balance results from expert judging
时间窗: Up to 16 weeks
Change from pre-test to post-test in balance results. Three RG specific balances were selected to evaluate the execution and more specific balance technique of the gymnasts. Pase balance, side balance with help and arabesque balance were performed over the force platform and evaluated by RG international judges experts. The units of measure were points given from the judges.
Jump results from a force platform (time of flight)
时间窗: Up to 14 weeks
Change of time of flight from pre-test to post-test in jump results. Counter movement jump (CMJ) and single leg counter movement jump (SLCMJ) tests are selected to evaluate gymnasts' jump parameters. Gymnasts perform their leaps with the impulse of one or two legs, thus, it is important to evaluate jumps tests performed from one and both legs. The unit of measure is (s).
Jump results from a force platform (force)
时间窗: Up to 14 weeks
Change of force from pre-test to post-test in jump results. Counter movement jump (CMJ) and single leg counter movement jump (SLCMJ) tests are selected to evaluate gymnasts' jump parameters. Gymnasts perform their leaps with the impulse of one or two legs, thus, it is important to evaluate jumps tests performed from one and both legs. The unit of measure is (N).
Jump results from a force platform (speed)
时间窗: Up to 14 weeks
Change speed from pre-test to post-test in jump results. Counter movement jump (CMJ) and single leg counter movement jump (SLCMJ) tests are selected to evaluate gymnasts' jump parameters. Gymnasts perform their leaps with the impulse of one or two legs, thus, it is important to evaluate jumps tests performed from one and both legs. The unit of measure is (m/s)
Core stability results on Lumbo-pelvic motor control (LPMC)
时间窗: Up to 12 weeks
Change from pre-test to post-test in LPMC results. Active Straight Leg Rise (ASLR) test and Bent Knee Fall Out (BKFO) test are the Pressure Biofeedback Unit (PBU) tests selected to measure core motor control of the gymnasts pre-intervention and post-intervention as they help evaluate core control in the three planes of motion. The units of measure are mmHg as the device is an inflatable pad that calculates the pressure the lumbo-pelvic-hip complex exerts over the instrument. The two tests were performed to both sides.
Balance results from a force platform (Sway velocity)
时间窗: Up to 16 weeks
Change of sway velocity of the COP from pre-test to post-test in balance results. A Romberg test variant, one leg stance test (OLST or SOLEC) was selected to evaluate the gymnasts balance as the gymnasts usually perform their balances over one leg. Eyes open and closed variants were also applied to be able to find more differences between groups. These tests were performed over a force platform, considered a gold standard tool for analysis of postural balance deficits, by means of valid parameters and stabilometry measures of confidence, such as frequency and speed of displacement of the COP. The unit of measure is (mm/s).
Jump results from a force platform (power)
时间窗: Up to 14 weeks
Change of power from pre-test to post-test in jump results. Counter movement jump (CMJ) and single leg counter movement jump (SLCMJ) tests are selected to evaluate gymnasts' jump parameters. Gymnasts perform their leaps with the impulse of one or two legs, thus, it is important to evaluate jumps tests performed from one and both legs. The unit of measure is (W).
Jump results from expert judging
时间窗: Up to 14 weeks
Change from pre-test to post-test in jump results. Three RG specific jump elements with different techniques were selected to be evaluated by RG international judges experts, these are the scissors, the stag and the split leap. The units of measure were points given from the judges.
Core stability results on Core strenght and endurance
时间窗: Up to 12 weeks
Change from pre-test to post-test in core strenght and endurance results. Hip-bridge test is a core stability test used to evaluate the core strength and endurance of the subject. The unit of measure are (s). The test was performed to both sides.
Balance results from a force platform (Center of pressure area)
时间窗: Up to 16 weeks
Change of Center of pressure (COP) area from pre-test to post-test in balance results. A Romberg test variant, one leg stance test (OLST or SOLEC) was selected to evaluate the gymnasts balance as the gymnasts usually perform their balances over one leg. Eyes open and closed variants were also applied to be able to find more differences between groups. These tests were performed over a force platform, considered a gold standard tool for analysis of postural balance deficits, by means of valid parameters and stabilometry measures of confidence, such as center of pressure (COP) area. The unit of measure is (mm²).
Jump results from a force platform (height)
时间窗: Up to 14 weeks
Change of height from pre-test to post-test in jump results. Counter movement jump (CMJ) and single leg counter movement jump (SLCMJ) tests are selected to evaluate gymnasts' jump parameters. Gymnasts perform their leaps with the impulse of one or two legs, thus, it is important to evaluate jumps tests performed from one and both legs. The unit of measure is (m).
次要结局
- Peak height velocity (PHV) age(up to 16 weeks)
- Years from PHV age(up to 16 weeks)
- The Borg Rating of Perceived Exertion (RPE) scale(up to 8 weeks)
研究者
Cristina Cabrejas Mata
University professor
University Ramon Llull