Clinical trial NCT06217835: What Are the Effects of Lower Limb Dysmetria on Gluteus Medius and Erector Spinae Musculature?
Official title: Changes in Activity of Erector Spinae and Gluteus Medius Muscles With the Presence of Simulated Lower Limb Dysmetria
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Muscular Disorders, Atrophic
Keywords: Low Back Pain
electromyography
Leg Length Inequality
lower limb length
Lead sponsor: Camilo Jose Cela University
Sponsor class: OTHER
First posted: 2024-01-23
Enrollment: 34
Sex: ALL
Minimum age (years): 18
Maximum age (years): 40
Standard ages: ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: CROSSOVER
Primary purpose: PREVENTION

Brief summary: Gluteus Medius (GM) has also been implicated in the development of Low Back Pain (LBP). GM is one of the main pelvic, where he actively participates in control of motion in the frontal and transverse plane, and hip , improving stability to the lumbopelvic-hip complex.

The aim of present study was to investigate whether modifying lower limb length with a different foot insoles of 0.5, 1 and 1.5 cm in a normal population has an effect on ES and GM activity and as a consequence in LBP. As a secondary objective, in turn, to evaluate whether ES and GM activity has an effect on jumping ability as assessed through CMJ.

Detailed description: Background: Length leg discrepancy (LLD), regardless of its origin, is a very common pathology that can contribute to low back pain. Various authors point out its relationship with the lack of activation of both the gluteus medius (GM) and the ipsilateral erector spinae (ES). The purpose of this study was to identify the activation of Es and GM with different simulated LLD, correlating said activation with the LBP. In turn, to evaluate whether ES and GM activity has an effect on jumping ability as assessed through CMJ. (2) Method: a sample of healthy subjects was selected to whom an artificial LLD was incorporated through a 0.5, 1 and 1.5 cm insole, measuring with EMGs in these 3 moments while walking and performing a counter movement jump (CMJ). The measurement was carried out in random order, in terms of insole height, using a Latin Square. Muscle activation patterns were recorded for 30 seconds at each of the insole heights while walking at 5.7 km/h and compared with the maximum voluntary contraction (MVC), both on the ipsilateral and contra-lateral sides. These muscles were then measured under the same circumstances during the development of the CMJ. (3)

Eligibility criteria: Inclusion Criteria:

-

Exclusion Criteria:

* The volunteers had no problems in range of motion of joints of the lower limbs
* pelvic obliquity due to a functional leg length discrepancy.
* obesity with body mass index (BMI) 35 \> kg/m²

Primary outcomes:
measure: Height CMJ
timeFrame: 1 week
measure: Height DJ LEFT
timeFrame: 1 week
measure: Height DJ RIGHT
timeFrame: 1 week
measure: Gluteus medius (mv)
timeFrame: 1 week
measure: Erector Spinae (mv)
timeFrame: 1 week
Secondary outcomes:
Other outcomes:
Locations:
city: Villanueva De La Cañada
country: Spain
facility: Juan Hernández Lougedo
state: Madrid
Study officials:
affiliation: Camilo Jose Cela University
name: Eduardo Cimadevilla, PT
role: STUDY_DIRECTOR
References: