Progressive Resistance Training in Patients With Class III Obesity

Beth Israel Deaconess Medical Center6 enrolled

Overview

To test the strength and physical performance outcomes of a 12-week progressive resistance training (PRT) exercise program in a small cohort of patients with Class III obesity who are preparing for bariatric weight loss surgery at Beth Israel Deaconess. The study will also test patient compliance to the 12 week PRT program. Whereas PRT exercise is currently recommended as a part of preoperative clinical care for bariatric surgery patients, little research has been done to measure the acceptance and effectiveness of a standardized PRT exercise protocol for improving health and perioperative care. Preliminary data from this study could be used to justify larger studies and further investigation.

Study Type

INTERVENTIONAL

Allocation

Purpose

HEALTH_SERVICES_RESEARCH

Masking

NONE

Enrollment

Conditions

Obesity

Interventions

Eligibility

Sex: ALLMin age: 18 YearsMax age: 65 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Men and women 18-65 years old * A BMI of ≥40 kg/m2 * Considering Weight Loss Surgery at BIDMC * Participating in multidisciplinary preoperative program: * been determined by a mental health professional (i.e., psychologist or social worker) to be well-informed, motivated, and not symptomatic for psychopathology that would put the person at risk for injury or failure with WLS * expressed strong desire for significant weight loss * experienced documented failure of long-term weight loss using nonsurgical methods * been informed of and accepts risks of surgery * Cleared by their primary care physician to be in stable health and capable of moderate level exercise * Willing to comply with expected attendance and participation at all intervention sessions and testing appointments * Has reliable transportation to the intervention location Exclusion Criteria: * Orthopedic limitations that would preclude exercise testing and training

Locations (2)

Beth Israel Deaconess Medical Center

Boston, Massachusetts, United States

Boston Medical Center

Boston, Massachusetts, United States

Outcomes

Primary Outcomes

6-Minute Walk Test

Subjects are instructed to walk from one end to the other of a 30- meter hallway at their own pace, while attempting to cover as much ground as possible in the allotted 6 minutes. Subjects are allowed to stop and rest during the test, but were instructed to resume walking as soon as they felt able to do so. Total distance walked was recorded at the end of the test.

Time frame: Before training - Week 1

6-Minute Walk Test

Time frame: After training - Week 12

Secondary Outcomes

Muscle Fatigability Test

After appropriate warm-up, subjects performed as many repetitions as possible against a resistance set to 80% or 70% (leg and chest respectively) of their pre-intervention 1-repetition maximum resistance. Fatigability tests measures the ability to sustain a static muscle contraction or make repetitive submaximal dynamic contractions. The test was administered using the leg press and chest press machines (Nautilus Nitro).

Time frame: Before training-Week 1

1-repetition maximum muscle strength test

The subject performs repeated single repetitions of leg press and chest press, separated by 60-second rest periods. Resistance is increased systematically at each repetition until the person's maximum voluntary muscle force cannot move the resistance through the full range of motion. The greatest resistance (measured in lbs.) a person can move through a full range of motion is recorded as the "one-repetition maximum." Tests were performed on leg and chest press machines (Nautilus Nitro).

Time frame: Before training-Week 1

Muscle Fatigability Test

Time frame: After training-Week 12

1-repetition maximum muscle strength test

Time frame: After training - Week 12