Core Stability, Muscle Atrophy or Weakness, Muscle Contraction
Conditions
Brief summary
This study aims in investigating the effects of a core muscles' strengthening program on core muscles' atrophy and contraction ability. Twenty healthy adults recruited and randomly assigned to either a 5-week training group developed to activate and strengthen local trunk muscles or a control group. The training program includes isometric bridging exercises from various positions and dynamic exercises for lumbopelvic stability. Core muscles' thickness will be assessed at rest and contracting conditions, prior and after the intervention, using ultrasonography.
Detailed description
A total of 136 male and female adults, members of local gyms, were initially invited for participation in the study after giving their written consent. After a second contact with the participants, forms regarding the inclusion and exclusion criteria were sent for completion. Of the 136 that initially answered positively for participation, 62 did not meet the inclusion criteria, based on their reports and the clinical examination by a health professional. Of the remaining 74 participants, 32 were excluded because of previous low back pain incidents and other recent musculoskeletal injuries that led to rehabilitation, while 22 decided to not participate for personal reasons. The remaining 20 participants were randomly allocated to either training group or intervention group, by a neutral, blinded investigator who had no involvement and was unaware of the study purposes. The intervention group will be trained and supervised by a certified fitness instructor in a gym class, who will be responsible for the correct execution of the exercises. The duration of the intervention will be 5 weeks, 3 times a week.
Interventions
OTHERCore stability
The exercise protocol consists of the following sets and repetitions, with a total duration of 5 weeks and a frequency of 3 sessions per week. Dynamic exercises: 2 sets of 10 to 15 repetitions (each side) Isometric exercises: 2 sets of 5 to 15 seconds (each side) Week 1- As mentioned above Week 2- Add 1 set Week 3 - Add 5 seconds and 5 repetitions Week 4 - Add 1 set Week 5- Add 5 seconds and 5 repetitions
Sponsors
Athanasios Ellinoudis
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
BASIC_SCIENCE
Masking
DOUBLE (Subject, Investigator)
Eligibility
Sex/Gender
ALL
Age
18 Years to 45 Years
Healthy volunteers
Yes
Inclusion criteria
* 18 to 45 years old * Trained recreationally at least 2 times a week, for the past 3 years * Healthy * No musculoskeletal injuries in the 6 months prior to the study
Exclusion criteria
* History of chronic low back pain * History of hip, pelvic or low back surgery * History of acute low back pain with duration at least 1 week, the preceding 6 months * Involvement in similar core stability training programs the last 12 moths prior to this study
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Transversus abdominis (TrA) muscle thickness at rest and contraction | Change from baseline assessment at 5 weeks | Muscle thickness (mm) is measured using ultrasonography |
| Lumbar multifidus (LM) muscle thickness at rest and contraction | Change from baseline assessment at 5 weeks | Muscle thickness (mm) is measured using ultrasonography |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Contraction thickness ratio (CTR) of TrA and LM muscle | Change from baseline assessment at 5 weeks | This is calculated by subtracting rest thickness from contraction thickness, dividing it to rest thickness and multiplying this value by 100 \[(contraction thickness-rest thickness/rest thickness)\*100\] |
Countries
Greece
Outcome results
None listed