Effects of Resistance Training in Untrained Older Adults

University of Brasilia68 enrolled

Overview

The latest randomized controlled trials and systematic reviews of resistance training performed by older adults reported that the systematic use of exercise in machines improves muscle strength and power, functional abilities, body mass and body balance. However, the effect of resistance training with elastic tubes exercises have not been studied in all the variables described above. The objective of this study is to analyze the effects of elastic tubes exercises on muscle mass, muscle strength, functional performance and postural control in elderly untrained.

This is a randomized clinical trial study (RCT) with 2 parallel arms. The subjects will be divided in 2 groups with a randomized block technique: Elastic Training Group (ETG) and Machine Training Group (MTG). The subjects will be submitted to a two-week familiarization period and then a sixteen-week of strength training program will be performed twice a week. This regimen of resistance training in both groups will consist of four exercises for lower limbs and four exercises for upper limbs which will be alternately performed with a one-minute interval between them during familiarization and training periods. Lower limb exercises will consist of: hip extension and abduction, and knee flexion and extension. Upper limb exercises will consist of: bench press, rowing, triceps and high pulley exercise.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

SINGLE

Enrollment

Conditions

Aging Older Adults

Interventions

Machines exercisesOTHER

Resistance training in pneumatic machines.

Elastic exercisesOTHER

Resistance training with elastic tubes.

Eligibility

Sex: ALLMin age: 55 YearsMax age: 85 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Convenience sample of forty healthy older adults with a minimum of 55 years of age. Exclusion Criteria: * subjects suffering from orthopedic, neurologic, rheumatologic, metabolic or heart conditions, and uncontrolled arterial hypertension. Additional exclusion criteria included undergoing estrogen therapy, use of cardiac pacemaker, knee or hip arthroplasty, the presence of fragments from previous osteosynthesis; orthopedic surgery, fractures, muscle injury or the practice of resistance training within the last 6 months

Locations (1)

University of Brasilia

Brasília, Federal District, Brazil

Outcomes

Primary Outcomes

Change in Body Mass

To assess muscle mass, a Dual-energy X-ray Absortiometry (DXA) (GE Electric Company®, Lunar Prodigy) will be used.

Time frame: Change from baseline in body mass at 16 weeks.

Change in Muscle Strength

Lower limb muscle strength will be assessed with an isokinetic dynamometer (Biodex System®, model III) and upper limb muscle strength with an isometric dynamometer (Jamar®, Hand Dynamometer).

Time frame: Change from baseline in muscle strength at 16 weeks.

Change in Postural Balance

The postural balance will be assessed with a three-dimensional (3D) motion analysis system and force plates.

Time frame: Change from baseline in postural balance at 16 weeks.

Secondary Outcomes

Change in Functional performance

The functional performance will be assessed with Ten Meters Walk Test (TMW), Timed Up\&Go Test (TUG) and 30 Second Chair Stand Test (T30).

Time frame: Before and after 16 weeks of resistance training

Data from ClinicalTrials.gov

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