Obesity Clinical Trial
Official title:
Improving Body Composition, Strength, Function and Health Related Quality of Life in Older Individuals With Sarcopenic Obesity Through Lifestyle Modifications
This study evaluates the addition of a high-protein energy-restricted diet to exercise in the treatment of sarcopenic obesity in people aged 65 and over. Half of participants will follow a hypocaloric (500 kcal deficit) high-protein (1.2 -1.5 g Protein/ kg bodyweight) diet alongside an exercise regime, while the other half will follow the same exercise regime alongside their habitual diet . All participants will consume a Vitamin D3 tablet (25micrograms) 3 times a week to achieve a weekly intake of 75 micrograms. Total duration of the intervention will be 16 weeks.
Sarcopenic Obesity is associated with advanced ageing and is characterised by increased
adipose tissue and loss of muscle mass, strength and/or function. The combination of
sarcopenia and obesity can predispose older individuals to more functional disabilities than
either of these two conditions alone, leading eventually to increased rates of morbidity and
mortality. Lifestyle interventions focusing on physical activity and diet have been
suggested as an effective tackling strategy. However, there is limited evidence on the
efficacy of such interventions in sarcopenic obese individuals over 65 years of age.
Therefore, the aim of this study is to assess the impact of a high protein
energy-restriction diet and a mixed exercise program on body composition, strength,
functionality and quality of life in older people with sarcopenic obesity.
This is a prospective randomised control trial among independent living sarcopenic obese
community-dwellers. Eligible participants are people over 65y who experience increased
adiposity (% body fat >28% in men and >40% in women) and low skeletal muscle index (SMI
<10.75 kg/m2 in men and <6.75kg/m2 in women). Fifty (50) participants will be randomly
allocated to either the exercise group (EX) or the exercise plus high protein
energy-restricted diet group (EXD). Each group will undergo 3 exercise sessions/ week for a
period of 16 weeks. The exercise sessions will be similar for both groups and will
incorporate aerobic, resistance, balance and flexibility elements. The EXD group will
receive a 500kcal-deficit diet plan and a milk-based protein supplement (ProMilk 50 by
Myprotein; 50 g milk protein/ 500 ml bottle) to consume every day (at post-workout on
exercise days or as a pre-bed snack on non-exercising days). The protein consumption will be
in the range of 1.2-1.5 g.kg bw-1. A total weekly dose of 75mcg Vitamin D3 (3 x 25mcg) will
be administered orally to all participants to avoid potential confounders associated with
Vitamin D deficiency/hypovitaminosis. The primary and secondary outcomes will be evaluated
at baseline, week 10 and week 16.
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Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment
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