Effect of a randomised 12-week resistance training programme on muscular strength, cross-sectional area and muscle quality in women having undergone Roux-en-Y gastric bypass

Abstract

The purpose of this study was to examine the effect of a 12-week resistance training programme on fat-free mass (FFM), muscle cross-sectional area, muscular strength and muscle quality in women who underwent Roux-en-Y gastric bypass surgery. Participants were 16 women (mean age = 44.9 ± 10.2 years) from bariatric surgical groups who were randomly assigned into either a control or an intervention group. Air displacement plethysmography measured FFM and magnetic resonance imaging measured quadriceps muscle cross-sectional area and whole thigh muscle cross-sectional area. Muscular strength and quality was assessed using an estimated 1-Repetition Maximum assessment. All measurements were collected twice, at baseline and at a 12-week follow-up. There were significantly greater improvements in leg press strength (mean differences = 55.4%, P < 0.001, Cohen's d = 2.4), leg extension strength (mean differences = 18.0%, P = 0.014, Cohen's d = 0.86) and leg press muscle quality (mean differences = 54.5%, P < 0.001, Cohen's d = 1.9) in the intervention group compared to the control group following the resistance training programme. The resistance training intervention significantly improved muscular strength and quality; however, it did not illicit changes in FFM or muscle cross-sectional area in women who underwent Roux-en-Y gastric bypass surgery.

Resistance Training and Protein Supplementation Increase Strength After Bariatric Surgery: A Randomized Controlled Trial

“…In the PRO+EX group, we observed an increase of 12% and 43% on average in lower‐limb muscle strength in absolute and relative terms, respectively. Such an increase in absolute strength is lower than that usually reported after resistance training in previously untrained women but is comparable to the gain observed after resistance training following bariatric surgery . In a nonrandomized trial, Daniels et al reported an 18% to 36% increase in lower‐limb absolute strength after a 12‐week resistance training.…”

“…However, when expressed relative to muscle mass, muscle strength was found unchanged, suggesting that the loss of absolute strength might be due to the decrease in muscle mass . The effect of resistance training, performed alone or in combination with endurance training, on changes in lean body mass and muscle strength during the first year after bariatric surgery has been assessed in only two RCTs . Muscle strength was found to be improved in both studies , whereas lean body mass was found preserved in one study and unchanged in the other .…”

Does intensive multidisciplinary intervention for adults who elect bariatric surgery improve post‐operative weight loss, co‐morbidities, and quality of life? A systematic review and meta‐analysis

“…Four interventions (n = 6 publications) delivered lifestyle and nutrition counselling‐focused MDT support, four interventions (n = 7 publications) delivered psychology‐focused MDT support, and 10 interventions (n = 21 publications) delivered exercise‐focused MDT support (Table ). There were five interventions delivered preoperatively, 10 post‐operatively, and three preoperatively and post‐operatively (Table ; detailed characteristics in Table S2). Of the post‐operative interventions, seven were concluded within the first 6‐month post‐operative, and six extended beyond or commenced after 6‐month post‐operative …”

Dietary Assessment and Patients Perspective Reasons for Diet and Exercise Adherence Post Bariatric Surgery

“…[27,28] It is highly recommended to start physical activity before and after the surgery to preserve lean body mass, boost cardiometabolic risk factors, and increase cardiovascular capacity as well as aerobic performance. [29,30] It is advised to exercise at least 150 minutes per week. [31] Patients who exercise can lose on average 3.6 kg higher than the 1.5 kg of parallel meta-analysis study of non-surgical weight loss.…”