Juan Manuel Guardia Baena

Dr. Juan Manuel Guardia Baena

Endocrinología y Nutrición, Hospital Universitario Virgen de las Nieves, Granada, Andalusia, Spain
orcid

Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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21 May 2024 in Nutrients
Verified
Journal Article
Open access
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Daniel-Antonio de Luis RomanDaniel-Antonio de Luis Roman
Daniel-Antonio de Luis Roman
JAJosé Manuel García Almeida
José Manuel García Almeida
DIEGO BELLIDO GUERRERODIEGO BELLIDO GUERRERO
DIEGO BELLIDO GUERRERO
GRGermán Guzmán Rolo
Germán Guzmán Rolo
AAAndrea Martín Aguilar
Andrea Martín Aguilar
GOGABRIEL OLVEIRA
GABRIEL OLVEIRA
Background: A nationwide, prospective, multicenter, cohort study (the Disease-Related caloric-protein malnutrition EChOgraphy (DRECO) study) was designed to assess the usefulness of ultrasound of the rectus femoris for detecting sarcopenia in hospitalized patients at risk of malnutrition and to define cut-off values of ultrasound measures. Methods: Patients at risk of malnutrition according to the Malnutrition Universal Screening Tool (MUST) underwent handgrip dynamometry, bioelectrical impedance analysis (BIA), a Timed Up and Go (TUG) test, and rectus femoris ultrasound studies. European Working Group on Sarcopenia in Older People (EWGSOP2) criteria were used to define categories of sarcopenia (at risk, probable, confirmed, severe). Receiver operating characteristic (ROC) and area under the curve (AUC) analyses were used to determine the optimal diagnostic sensitivity, specificity, and predictive values of cut-off points of the ultrasound measures for the detection of risk of sarcopenia and probable, confirmed, and severe sarcopenia. Results: A total of 1000 subjects were included and 991 of them (58.9% men, mean age 58.5 years) were evaluated. Risk of sarcopenia was detected in 9.6% patients, probable sarcopenia in 14%, confirmed sarcopenia in 9.7%, and severe sarcopenia in 3.9%, with significant differences in the distribution of groups between men and women (p < 0.0001). The cross-sectional area (CSA) of the rectus femoris showed a significantly positive correlation with body cell mass of BIA and handgrip strength, and a significant negative correlation with TUG. Cut-off values were similar within each category of sarcopenia, ranging between 2.40 cm2 and 3.66 cm2 for CSA, 32.57 mm and 40.21 mm for the X-axis, and 7.85 mm and 10.4 mm for the Y-axis. In general, these cut-off values showed high sensitivities, particularly for the categories of confirmed and severe sarcopenia, with male patients also showing better sensitivities than women. Conclusions: Sarcopenia in hospitalized patients at risk of malnutrition was high. Cut-off values for the better sensitivities and specificities of ultrasound measures of the rectus femoris are established. The use of ultrasound of the rectus femoris could be used for the prediction of sarcopenia and be useful to integrate nutritional study into real clinical practice.

18 October 2024 in Nutrients
Verified
Journal Article
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VSVíctor Siles-Guerrero
Víctor Siles-Guerrero
Jose M. Romero-MárquezJose M. Romero-Márquez
Jose M. Romero-Márquez
RGRosa Natalia García-Pérez
Rosa Natalia García-Pérez
CNCristina Novo
Cristina Novo
Juan Manuel Guardia BaenaJuan Manuel Guardia Baena
Juan Manuel Guardia Baena
AMAraceli Muñoz-Garach
Araceli Muñoz-Garach
Background: fasting-based strategies (FBS) and continuous caloric restriction (CCR) are popular methods for weight loss and improving metabolic health. FBS alternates between eating and fasting periods, while CCR reduces daily calorie intake consistently. Both aim to create a calorie deficit, but it is still uncertain as to which is more effective for short- and long-term weight and metabolic outcomes. Objectives: this systematic review and meta-analysis aimed to compare the effectiveness of FBS and CCR on these parameters in obese adults. Methods: after screening 342 articles, 10 randomized controlled trials (RCTs) with 623 participants were included. Results: both interventions led to weight loss, with a reduction of 5.5 to 6.5 kg observed at the six-month mark. However, the results showed that FBS led to slightly greater short-term reductions in body weight (−0.94 kg, p = 0.004) and fat mass (−1.08 kg, p = 0.0001) compared to CCR, although these differences are not clinically significant. Both interventions had similar effects on lean mass, waist and hip circumference, blood pressure, lipid profiles, and glucose metabolism. However, FBS improved insulin sensitivity, with significant reductions in fasting insulin (−7.46 pmol/L, p = 0.02) and HOMA-IR (−0.14, p = 0.02). Conclusions: despite these short-term benefits, FBS did not show superior long-term outcomes compared to CCR. Both strategies are effective for weight management, but more research is needed to explore the long-term clinical relevance of FBS in obese populations.

1 November 2022 in Journal of Urology
Verified
Journal Article
Closed access
IPIgnacio Puche-Sanz
Ignacio Puche-Sanz
ASAlmudena Sabio-Bonilla
Almudena Sabio-Bonilla
PVPedro Vila-Braña
Pedro Vila-Braña
Juan Manuel Guardia BaenaJuan Manuel Guardia Baena
Juan Manuel Guardia Baena
MNMercedes Nogueras-Ocaña
Mercedes Nogueras-Ocaña
PLPablo Lardelli-Claret
Pablo Lardelli-Claret
Purpose:Hypoandrogenism (HA) may have an association with urethral stricture (US). This study aimed to identify and quantify the association between testosterone levels and US.Materials and Methods...

28 February 2023 in Nutrients
Verified
Journal Article
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PPPablo B. Pedrianes-Martín
Pablo B. Pedrianes-Martín
MDMaria Carolina Dassen
Maria Carolina Dassen
Juan Manuel Guardia BaenaJuan Manuel Guardia Baena
Juan Manuel Guardia Baena
MFMaría Riestra Fernández
María Riestra Fernández
CSC. Salom-Vendrell
C. Salom-Vendrell
LLLuis Lizan
Luis Lizan
Malnutrition is a common condition associated with various pathologies such as infections, neoplasms and digestive system disorders. Patients can be managed using different strategies, which include dietary modifications or oral nutritional supplements (ONS). It is important to promote good ONS adherence in order to attain clinical efficacy and cost-effectiveness. Several factors (amount, type, duration and tolerability) may have an impact on ONS adherence. PerceptiONS is a descriptive, cross-sectional observational study based on an ad hoc electronic survey designed to explore physicians’ perception of malnourished outpatients prescribed ONS. The survey considered adherence, acceptance/satisfaction, tolerability and benefits within the context of Spain’s healthcare system. The perceptions of 548 physicians regarding the experience of 2516 patients were analyzed. From the physicians’ perspective, 57.11% of patients adhered to over 75% of the prescribed ONS. The organoleptic properties of ONS represented the aspect with the most positive impact on adherence, with smell (43.72%) ranking as the top characteristic. In general, patients were satisfied (90.10%) with the ONS, with their related benefits (88.51%) and their organoleptic properties (90.42%), and accepted ONS in their daily diet (88.63%). ONS improved patients’ general condition (87.04%), quality of life (QoL) (81.96%) and vitality/energy (81.28%). Physicians would prescribe the same ONS again in 96.4% of the cases.

6 December 2022 in BMJ Open Diabetes Research & Care
Verified
Journal Article
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MFManuela Fernández-López
Manuela Fernández-López
JBJosé Eliseo Blanco-Carnero
José Eliseo Blanco-Carnero
Juan Manuel Guardia BaenaJuan Manuel Guardia Baena
Juan Manuel Guardia Baena
CPCatalina de Paco-Matallana
Catalina de Paco-Matallana
AAAurora Aragón-Alonso
Aurora Aragón-Alonso
AHAntonio Miguel Hernández-Martínez
Antonio Miguel Hernández-Martínez
Introduction To compare the conventional treatment of gestational diabetes mellitus (GDM) with flexible treatment according to the measurement of fetal abdominal circumference (AC) in daily clinical practice. Research design and methods Two hundred and sixty pregnant women diagnosed with GDM before week 34 were randomly placed in two groups: a control group, treated according to maternal capillary glycemia, and an experimental group, treated according to ultrasound parameters of fetal growth. The glycemic targets in the control group were blood glucose levels when fasting and 1 hour postprandial (<95/140 mg/dL). In the experimental group, glycemic targets depended on the percentile (p) of fetal AC: if AC p <75th, then blood glucose targets when fasting and at 1 hour postprandial were <120/180 mg/dL; and if AC p ≥75th, then the glycemic targets were <80/120 mg/dL. The follow-up of both groups was scheduled according to the GDM protocol of our diabetes and gestation unit. Results The study was completed by 246 pregnant women, 125 in the control group and 121 in the experimental group. In the experimental group, insulin treatment and neonatal hypoglycemia were significantly lower (p=0.018 and p 0.035, respectively). No differences were observed in large and small infants according to gestational age. However, macrosomic infants were less frequent in the experimental group, although this difference did not reach statistical significance. In terms of gestation complications, the type of delivery and its complications and the rest of the neonatal complications analyzed, no significant differences were observed. Conclusions The treatment of flexible GDM according to the measurement of fetal AC is safe for the mother and the fetus and almost halves the number of pregnant women who require insulin treatment, without increasing the number of ultrasound checks or medical visits.

29 April 2026 in Nutrients
Verified
Journal Article
Open access
PDF file
JAJosé Manuel García Almeida
José Manuel García Almeida
RJRocio Fernández Jiménez
Rocio Fernández Jiménez
AHAna Hernández-Moreno
Ana Hernández-Moreno
GOGABRIEL OLVEIRA
GABRIEL OLVEIRA
MVMercedes Vázquez-Gutiérrez
Mercedes Vázquez-Gutiérrez
ASAlejandro Sanz-París
Alejandro Sanz-París
Background/Objectives: Malnutrition in cancer adversely affects treatment outcomes and survival. Early intervention through oral nutritional supplements (ONSs) and dietary counseling can improve outcomes. This study evaluated the evolution of nutritional and morphofunctional parameters over three months in malnourished patients with cancer undergoing a comprehensive nutritional support program comprising dietary counseling, physical activity, and a novel concentrated high-protein, high-calorie ONS (cHPHC-ONS) with a high intrinsic leucine content. Methods: A prospective, observational, multicenter cohort study was conducted across 18 public hospitals in Spain. Two hundred thirty malnourished patients with cancer were enrolled: 147 naïve (no ONS treatment in the last three months) and 83 non-naïve (who transitioned to cHPHC-ONS after inadequate response to initial ONSs). Nutritional status was assessed using Global Leadership Initiative on Malnutrition (GLIM) criteria and morphofunctional parameters via bioelectrical impedance analysis, nutritional ultrasound, handgrip strength, the Timed Up and Go (TUG) test, and analysis of biochemical parameters. Results: After three months, 23.8% achieved normal GLIM nutritional status (p < 0.0001), with a greater improvement seen in non-naïve patients (28.4%, p < 0.0001). Weight loss ceased in 42.6% (p < 0.0001). and inflammation resolved for 10.3% (p = 0.0015). Non-naïve patients experienced a significant increase in fat-free mass index (p = 0.0159), appendicular skeletal muscle index (p = 0.0248), and rectus femoris cross-sectional area (p = 0.0016). Muscle strength increased significantly by +1.7 kg (p = 0.0025), and TUG test time decreased by 1.13 s (p = 0.0003) overall. Conclusions: The comprehensive nutritional support program—including a novel cHPHC-ONS, along with dietary and physical activity guidance—significantly improved the nutritional and morphofunctional status of malnourished patients with cancer, with benefits particularly evident in non-naïve individuals. Limitations: Observational design, no control group, short follow-up, and unadjusted non-multivariable comparisons, limiting causal inference.