Combined creatine and HMB co-supplementation improves functional strength independent of muscle mass in physically active older adults: a randomized crossover trial
Abstract
Sarcopenia is a major contributor to frailty and functional decline among older adults. Combining exercise with nutritional strategies such as creatine monohydrate (CRE) and β-hydroxy-β-methylbutyrate (HMB) supplementation may help to preserve strength and independence. To evaluate the effects of 6-week CRE + HMB supplementation combined with an integral physical conditioning (IPC) program on functional strength and body composition in physically active older adults. In a randomized, double-blind, placebo-controlled crossover trial, 30 older adults (20 men, 10 women; ≥ 60 years) completed two 6-week intervention periods (CRE + HMB or placebo) separated by a 3-week washout. The IPC program performed in both conditions consisted of four supervised weekly sessions combining strength, power, multicomponent circuits, high-intensity interval and moderate intensity continuous training), performed at 40–100% training heart rate (THR) and 20–90% one-repetition maximum (1RM) and structured as warm-up, main part and cooldown. Functional strength and body composition (bioelectrical impedance analysis) were assessed pre- and post-intervention, respectively. Significant time × group interactions were observed for fat mass, fat-free mass, total muscle mass, skeletal muscle mass, appendicular skeletal muscle mass, muscle mass index, skeletal muscle index and ALM/BMI (all p < 0.05). The CRE + HMB group showed reductions in fat mass and body fat percentage, with slight numerical increases in…
How strong is the evidence?
Evidence Hub reads this as a randomized trial, done in people. Its evidence level is 2 of 5 (High · randomized trial). Randomized trials of a reasonable size are the strongest single-study design. Reported size: 30 participants or records.
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