Effects of β-Hydroxy β-Methylbutyric Supplementation in Combination with Conservative Non-Invasive Treatments in Athletes with Patellar Tendinopathy: A Pilot Study

Ángela Sánchez-Gómez, Jose Manuel Jurado-Castro, Fernando Mata, Antonio Jesús Sánchez-Oliver and Raúl Domínguez
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Ángela Sánchez-Gómez: Departamento de Enfermería Farmacología y Fisioterapia, Facultad de Medicina y Enfermería, Universidad de Córdoba, 14004 Córdoba, Spain
Jose Manuel Jurado-Castro: Metabolism and Investigation Unit, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Reina Sofia University Hospital, University of Cordoba, 14004 Córdoba, Spain
Fernando Mata: Centro de Estudios Avanzados en Nutrición, 14010 Córdoba, Spain
Antonio Jesús Sánchez-Oliver: Departamento de Motricidad Humana y Rendimiento Deportivo, Universidad de Sevilla, 41013 Seville, Spain
Raúl Domínguez: Departamento de Motricidad Humana y Rendimiento Deportivo, Universidad de Sevilla, 41013 Seville, Spain

IJERPH, 2022, vol. 19, issue 1, 1-14

Abstract: The aim of the present study was to analyze the effect of conservative non-invasive treatments based on eccentric training, stretching and extracorporeal shock wave therapy (ESWT) supplemented with β-Hydroxy β-methylbutyric (HMB) or placebo (PLAC) on body composition, pain and muscular function (jump ability, muscular power and muscular strength) in athletes with patellar tendinopathy (PT). In a double-blind randomized trial, 8 athletes (4 males and 4 females) performed a physical rehabilitation for 4 weeks. They were randomly divided into two experimental groups (two males and two females in each one) that ingested HMB (HMBG) or PLAC (PLACG). In pre- and post-intervention were assessed body composition, pain, countermovement jump (CMJ), back-squat (BS) for analyzing peak power (W) (PP PP ), load (kg) associated to PP PP (PP KG ) and mean velocity (m/s) (PP MV ) in addition to a 5-RM leg extension tests. An interaction intervention·supplementation ( p = 0.049; Ƞ 2 p = 0.774) was observed in the height reached in the CMJ as an intervention effect in PPPP detected for the HMBG ( p = 0.049). In addition, an enhancement in PPKG ( p = 0.028; Ƞ 2 p = 0.842) was detected in the intervention, but not in PPMV, as an increase in the intervention in the 5-RM test ( p = 0.001; Ƞ 2 p = 0.981) was observed. No changes were noted on body composition or pain ( p > 0.05). The combination of eccentric training with stretching and ESWT increased concentric muscular power and strength after 4 weeks without changes in body lean mass or pain. In addition, HMB supplementation could enhance the power muscular performance in athletes with PT, optimizing the intervention adaptions.

Keywords: recovery; injury; patellar tendinopathy; rehabilitation; supplement; sport nutrition (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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