Phototherapy in Association to Resistance Training in the Elderly: the Effect on Muscle Strength, Muscle Mass and Functional Capacity

Not Applicable

Completed

• Conditions: Elderly Men
• Interventions: Behavioral: Resistance Training; Device: Active Low Level Laser Therapy; Device: Placebo Low Level Laser Therapy

• Registration Number: NCT03287284
• Lead Sponsor: Federal University of Health Science of Porto Alegre

Brief Summary

Phototherapy has been largely used in rehabilitation programs due to its analgesic, antiinflammatory and healing effects. Lately, its effects of optimizing the results of resistance training on young individuals have been studied. However, there is a lack of studies on its effect on the elderly population. The objective of the present study is to verify the effect of Low-Level Laser Therapy (LLLT) on the results of resistance training in the elderly. The study will be a randomized doubled-blinded controlled trial. 30 elderly men with age ranging from 60 to 80 years will be included and randomized between Placebo Group (placebo LLLT + Resistance Training) and LLLT Group (active LLLT + Resistance Training). All volunteers will be submitted to a control period of four weeks before the beginning of the resistance training, which will have 12 weeks of duration. The assessments will be done at baseline, after the control period and after the training period. The training sessions will be performed twice a week and the training protocol will be performed with repetition maximum periodization. The LLLT will be applied before the training sessions on eight points of the quadriceps muscles, leading to a total of 240 Joules on each leg. The placebo LLLT will be applied on the same way, but with the equipment turned off. The assessments will include muscle architecture by ultrasonography, muscle strength by isokinetic dynamometer and 1 Repetition Maximum test of leg-extension and leg-press exercises, and functional capacity by the 6-Minute Walking Test, 30s Sit to Stand Test, Timed Up-and-Go Test and Stair Ascent Test.

Detailed Description

Not available

Study Timeline

• Study Start: 2017-03-06
• Study First Submitted: 2017-09-15
• Study First Submitted QC: 2017-09-15
• Study First Posted: 2017-09-19
• Primary Completion: 2017-12-22
• Study Completion: 2017-12-22
• Status Verified: 2018-07
• Last Update Submitted: 2018-07-31
• Last Update Posted: 2018-08-01

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Male
• Target Recruitment: 30

Inclusion Criteria

• Elderly men with age ranging from 60 to 80 years in condition to participate in the strength training program.

Exclusion Criteria

• Individuals who already participate in strength training programs;
• Individuals who participated in strength training programs less than three months before the beginning of the study;
• Individuals with any kind musculoskeletal injuries in the lower limbs that impair the performance of the exercises;
• Individuals with contraindications to the performance of high intensity exercises, such as cardiovascular or neurological diseases;
• Individuals with difficulties in understanding and/or performing the exercises;
• Individuals who did not attend to at least 85% of the sessions or had 02 consecutive absences and did not recover them.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Placebo Group	Placebo Low Level Laser Therapy	Placebo Low Level Laser Therapy application before resistance training
Placebo Group	Resistance Training	Placebo Low Level Laser Therapy application before resistance training
LLLT Group	Resistance Training	Active Low Level Laser Therapy application with a dose of 240 Joules before resistance training
LLLT Group	Active Low Level Laser Therapy	Active Low Level Laser Therapy application with a dose of 240 Joules before resistance training

Primary Outcome Measures

Name	Time	Method
Isokinetic peak torque of quadriceps muscle	Change from baseline in isokinetic peak torque at 12 weeks

Secondary Outcome Measures

Name	Time	Method
Muscle architecture	Change from baseline in muscle architecture at 12 weeks
Leg-extension 1RM test	Change from baseline in leg-extension 1RM test at 12 weeks
Leg-press 1RM test	Change from baseline in leg-press 1RM test at 12 weeks
Physical Function	Change from baseline in physical function at 12 weeks

Trial Locations

Locations (1)

Universidade Federal do Rio Grande do Sul; 🇧🇷 Pôrto Alegre, Brazil