The Effect of Diathermy Therapy on Isolated Lumbar Extension (ILEX) Training

NCT06852872 | Completed

• 1 other identifier: 2023-02308_ILEX
• Study Type: interventional
• Target: 25
• Locations: 1 country
• Sites: 1

Brief Summary

To evaluate the effectiveness of the Isolated Back Extension (ILEX) machine Myosom and examine the influence of preheating on resistance training, the investigators will recruit a cohort of 14 healthy individuals, including both male and female participants, who have no prior experience with ILEX training, for a 9-week training program consisting of a total of 18 sessions. Baseline (BL) measurements will be conducted in the week before the initiation of training, and two follow-up measurements (F/U 1 and F/U 2) carried out after the ninth and eighteenth sessions, with a minimum break of 48 hours after the last training session to ensure proper recovery and to prevent inaccuracies in muscle thickness measurement arising due to acute oedema.

Conditions

Resistance Training; Healthy Participants Study

Keywords

Isolated lumbar extension training; lumbar muscle; Thermal Therapy

Outcome Measures

Primary Outcomes (1)

• maximal isometric force of the back extensors

  measured on the ILEX machine in Newton

  base line, 3 weeks, 6 weeks

Secondary Outcomes (8)

• isometric back extension endurance

  base line, 3 weeks, 6 weeks

• Thickness of the Mm. erector spine

  base line, 3 weeks, 6 weeks

• Lumbar flexibility

  base line, 3 weeks, 6 weeks

• Lumbar R.O.M.

  base line, 3 weeks, 6 weeks

• rating of perceived effort

  After each of the 12 training sessions, twice a week for 6 weeks

Study Arms (2)

Intervention group

EXPERIMENTAL

Capacitive Resistive Electric Transfer (CRET) therapy AND Isolate Lumbar Extension (ILEX) Training.

Other: CRET Therapy; Other: ILEX training

Sham Group

SHAM COMPARATOR

Sham Capacitive Resistive Electric Transfer (CRET) therapy AND Isolate Lumbar Extension (ILEX) Training.

Other: ILEX training; Other: CRET therapy sham

Interventions

CRET Therapy OTHER

Diathermy therapy with a protocol to preheat the back extensor muscle

Also known as: TECAR therapy, Diathermy therapy

Intervention group

ILEX training OTHER

Isolated lumbar Extension Training

Intervention group; Sham Group

CRET therapy sham OTHER

Diathermy therapy withouth any radiofrequency as a sham intervention

Also known as: TECAR therapy, Diathermy therapy

Sham Group

Eligibility Criteria

• Age: 18 Years - 30 Years
• Sex: female
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• healthy
• pain-free
• sufficient understanding of the German language
• able to give informed consent
• between 18 and 30

You may not qualify if:

• pregnant
• medication
• surgery of lumbar spine
• knee or hip disorders
• low back pain
• pathologies or deformities of lumbar spine
• other disorders
• previous or current ILEX Training

Sponsors & Collaborators

• University of Applied Sciences and Arts of Southern Switzerland: lead

Study Sites (1)

University of Applied Sciences and Arts of Southern Switzerland

Landquart, Kanton Graubünden, 7302, Switzerland

Location

Study Officials

• Ron Clijsen, PhD

  University of Applied Sciences and Arts of Southern Switzerland

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: DOUBLE
• Who Masked: PARTICIPANT, INVESTIGATOR
• Masking Details: single blinded
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: PhD.

Model Details: RCT

Study Record Dates

• First Submitted: May 7, 2024
• First Posted: February 28, 2025
• Study Start: April 29, 2024
• Primary Completion: April 15, 2025
• Study Completion: April 15, 2025
• Last Updated: October 3, 2025

Record last verified: 2025-09

Data Sharing

• IPD Sharing: Will not share

Locations

CH (1)