Maximizing the efficiency of resistance training

Introduction and objective: Resistance training is the main intervention that can develop an individual’s strength and muscle mass. When executed regularly, it provides significant health benefits. The aim of this study is to analyze the current level of knowledge on maximizing the efficiency of resistance training in the context of muscle hypertrophy and increase in muscle strength. Materials and methods: PubMed and Google Scholar databases were searched. The criteria for qualifying the article for the review were the following keywords: hypertrophy, resistance training, muscle strength, and efficiency. 10 articles from 2017 to 2022 were analyzed. Description of the state of knowledge: To optimize the way of performing RT, its assumptions should be individually adapted to the exercising person.  In the conventional model of muscle hypertrophy, three main factors are distinguished: muscle tension, metabolic stress, and muscle damage. Maintaining greater mechanical muscle tension during training primarily promotes an increase in its strength while increasing metabolic stress is responsible for the intensification of hypertrophy. In terms of hypertrophy, it has been observed that more series of exercises per week means greater gains in muscle mass. Multi-joint exercises involve more muscle mass than single-joint exercises. Summary: To control the effectiveness of training 1RM should be measured before and after the training cycle. Performing exercises with a high load (RM ≤7) may be the most effective training method for people with limited time resources. To maximize the efficiency of training, only multi-joint exercises may be used.Introduction and objective: Resistance training is the main intervention that can develop an individual’s strength and muscle mass. When executed regularly, it provides significant health benefits. The aim of this study is to analyze the current level of knowledge on maximizing the efficiency of resistance training in the context of muscle hypertrophy and increase in muscle strength. Materials and methods: PubMed and Google Scholar databases were searched. The criteria for qualifying the article for the review were the following keywords: hypertrophy, resistance training, muscle strength, and efficiency. 10 articles from 2017 to 2022 were analyzed. Description of the state of knowledge: To optimize the way of performing RT, its assumptions should be individually adapted to the exercising person.  In the conventional model of muscle hypertrophy, three main factors are distinguished: muscle tension, metabolic stress, and muscle damage. Maintaining greater mechanical muscle tension during training primarily promotes an increase in its strength while increasing metabolic stress is responsible for the intensification of hypertrophy. In terms of hypertrophy, it has been observed that more series of exercises per week means greater gains in muscle mass. Multi-joint exercises involve more muscle mass than single-joint exercises. Summary: To control the effectiveness of training 1RM should be measured before and after the training cycle. Performing exercises with a high load (RM ≤7) may be the most effective training method for people with limited time resources. To maximize the efficiency of training, only multi-joint exercises may be used. Key words: hypertrophy; resistance training; muscle strength; efficienc

The ketogenic diet in the treatment of diabetes type 2

Despite  advances in the medical world, obesity remains a major worldwide health hazard .The majority of chronic diseases like diabetes is largely related to obesity which is usually a product of an unhealthy lifestyle and poor dietary habits. The ketogenic diet has become an increasingly popular approach for both weight loss and as an alternative diet for type 2 diabetes mellitus (T2DM). In addition, this diet has a positive effect on body weight, blood glucose level, glycosylated hemoglobin and plasma lipid profile. This review focuses on the therapeutic effectiveness of using LCKD for the treatment of type 2 diabetes.Despite  advances in the medical world, obesity remains a major worldwide health hazard .The majority of chronic diseases like diabetes is largely related to obesity which is usually a product of an unhealthy lifestyle and poor dietary habits. The ketogenic diet has become an increasingly popular approach for both weight loss and as an alternative diet for type 2 diabetes mellitus (T2DM). In addition, this diet has a positive effect on body weight, blood glucose level, glycosylated hemoglobin and plasma lipid profile. This review focuses on the therapeutic effectiveness of using LCKD for the treatment of type 2 diabetes

Efficacy and safety of atropine to control childhood myopia progression

Introduction: Nearsightedness is one of the most common eye defects in people all over the world. If left untreated, it leads to a number of serious eye complications that can result in irreversible loss of vision. It is estimated that by 2050. Half of humanity will be burdened with this disadvantage, so it has become a priority to try to find ways to prevent and treat myopia, among which the administration of atropine drops is very effective. Aim of the study: The aim of this study is to evaluate the safety and efficacy of atropine in controlling the progression of myopia and to investigate the relationship between the dose of atropine and the effectiveness of controlling the progression of myopia. Material and methods: The PubMed and Google Scholar databases were used to review the literature. Results: Eye drops with 1% atropine showed the greatest efficacy in the control of myopia. However, their use was limited due to the occurrence of side effects such as impaired accommodation and photophobia. In the ATOM 2 study, which investigated the use of atropine in a variety of concentrations, it was found that 0.01% is the optimal concentration with good efficacy and minimal side effects. One of the breakthroughs was the LAMP study using atropine at a concentration of 0.05%, 0.025%, 0.01% in eye drops. This study provided evidence for the first time that low-concentration atropine is effective compared with placebo in myopia. In addition, both efficacy and side effects followed a concentration-dependent response ranging from 0.01% to 0.05% of atropine. Among them, 0.05% of atropine was the optimal concentration to achieve the best efficacy and safety profile. Conclusion: Low concentration of atropine is effective in the control of myopia. Its widespread use can help prevent the progression of myopia. However, further investigation of the rebound phenomenon and a long term, individualized approach to treatment are warranted.   &nbsp

Mindfulness sessions delivered via smartphone applications and their potential benefits

Mindfulness, as a practice of focusing one’s attention on the present moment without evaluating, is used in mindfulness based interventions (MBI) therapy. Traditionally, these sessions are conducted in person. At this moment, we are witnessing a global trend in which patients are turning to technology and are looking for alternative, more convenient solutions. There are studies assessing the effectiveness of mindfulness training conducted in a new unconventional way, which is using an application installed on patient's smartphone. This paper discusses possible benefits of online conducted mindfulness sessions.&nbsp

Therapeutic methods in the treatment of triple-negative breast cancer - a review

Breast cancer is a common female malignancy characterized by the presence of multiple subtypes taking into account, among other things, hormonal activity. The purpose of this study is to show the therapeutic options for triple-negative breast cancer (TNBC). A review of the literature in databases such as PubMed, Google Scholar, and Web of Science by keywords was performed, taking into account papers from 2017-2022. The main therapeutic approaches are surgical intervention and systemic chemotherapy (neoadjuvant and adjuvant). Unsatisfactory results from chemotherapy have prompted researchers to work on other methods to combat TNBC. Clinical trials are being conducted on the use of immunotherapy focusing mainly on molecules against PD-1, PD-L1, and CTLA-4. Targeted therapy is the latest proposed form of therapy, which offers the possibility of introducing a drug in the future that will be tailored to the patient's needs limiting the negative therapeutic impact

The effect of levothyroxine on the proliferative activity of the thyroid follicular cells

Wstęp: Farmakologiczne leczenie nietoksycznego wola guzkowego lewotyroksyną wciąż pozostaje sprawą dyskusyjną. Celem pracy było określenie wpływu lewotyroksyny na aktywność proliferacyjną komórek pęcherzykowych tarczycy. Materiał i metody: Materiał cytologiczny uzyskano metodą biopsji aspiracyjnej cienkoigłowej (BAC) wykonanej pod kontrolą USG, przed i 6 miesięcy po leczeniu lewotyroksyną, od 32 kobiet w wieku 34-69 lat będących w stanie eutyreozy. Pacjentki podzielono na dwie grupy wiekowe: przed 45. rokiem życia (14 chorych) i po 45. roku życia (18 chorych). Aktywność proliferacyjną komórek pęcherzykowych oceniono poprzez określenie indeksu proliferacyjnego (PI, proliferative index), stanowiącego odsetek komórek pęcherzykowych z dodatnią reakcją z przeciwciałem Ki-67. Ocenę mikroskopową przeprowadzono, używając komputerowego programu morfometrycznego MicroImage InCD UDF (Olympus). Wyniki: Po 6 miesiącach leczenia wartość indeksu proliferacyjnego była znamiennie statystycznie niższa w obu badanych grupach (8,59 &plusmn; 3,07 vs. 6,51 &plusmn; 1,91; p < 0,001 u kobiet w wieku poniżej 45 lat i 7,72 &plusmn; 1,83 vs. 5,09 &plusmn; 1,51, p < 0,001 w starszej grupie wiekowej). Wnioski: Wyniki przeprowadzonej pracy wskazują, że lewotyroksyna wpływa na aktywność proliferacyjną komórek pęcherzykowych tarczycy, szczególnie u kobiet w wieku okołomenopauzalnym.Introduction: Pharmacological treatment of non-toxic nodular goitre with levothyroxine has caused a discussion about its effectiveness and safety. The aim of the study was to examine the influence of levothyroxine on the proliferative activity of the thyroid follicular cells. Material and methods: Cytological material was obtained from 32 euthyroid females, aged 34-69 years, by USG-guided Fine-Needle Aspiration Biopsy (FNAB), before and after 6 months treatment with levothyroxine. The patients were divided into 2 age groups: up to 45 years (14 patients) and above 45 years (18 females). Proliferative activity of the follicular cells was assessed by the proliferative index (PI), representing the percentage of follicular cells with positive reaction with the antibody Ki-67. Microscopic evaluation was carried out using morphometric computer system MicroImage InCD UDF (Olympus). Results: After 6-months of treatment IP values decreased significantly in both groups studied (8.59 &plusmn; 3.07 vs 6.51 &plusmn; &plusmn; 1.91; p < 0.001 in females aged < 45 years and 7.72 &plusmn; 1.83 vs 5.09 &plusmn; 1.51; p < 0.001 in the older group). Conclusion: Our results indicate that levothyroxine has an influence on the proliferative activity of the thyroid follicular cells, particularly in post-menopausal women

The Importance of Selected Dysregulated microRNAs in Diagnosis and Prognosis of Childhood B-Cell Precursor Acute Lymphoblastic Leukemia

B-cell precursor acute lymphoblastic leukemia (BCP-ALL) is a frequent type of childhood hematological malignancy. The disease is classified into several subtypes according to genetic abnormalities. MicroRNAs (miRNAs) are involved in pathological processes (e.g., proliferation, apoptosis, differentiation). A miRNA is a group of short non-coding RNAs with relevant regulatory effects on gene expression achieved by suppression of the translation or degradation of messenger RNA (mRNA). These molecules act as tumor suppressors and/or oncogenes in the pathogenesis of pediatric leukemias. The characteristic features of miRNAs are their stable form and the possibility of secretion to the circulatory system. The role of miRNA in BCP-ALL pathogenesis is still emerging, but several studies have suggested using miRNA expression profiles as biomarkers for diagnosis, prognosis, and response to therapy in leukemia. The dysregulation of some miRNAs involved in childhood acute lymphoid leukemia, such as miR-155, miR-200c, miR-100, miR-181a, miR125b, and miR146a is discussed, showing their possible employment as therapeutic targets. In the current review, the capabilities of miRNAs in non-invasive diagnostics and their prognostic potential as biomarkers are presented

Does age pay off? Effects of three-generational experiments of nanodiamond exposure and withdrawal in wild and longevity-selected model animals

Nanodiamonds (NDs) are considered a material with low toxicity. However, no studies describe the effects of ND withdrawal after multigenerational exposure. The aim was to evaluate ND exposure (in the 1st and 2nd generations) effects at low concentrations (0.2 or 2 mg kg_ 1) and withdrawal (in the 3rd generation) in the wild (H) and longevity-selected (D) model insect Acheta domesticus. We measured selected oxidative stress parameters, immunity, types of cell death, and DNA damage. Most of the results obtained in the 1st generation, e.g., catalase (CAT), total antioxidant capacity (TAC), heat shock proteins (HSP70), defensins, or apoptosis level, confirmed no significant toxicity of low doses of NDs. Interestingly, strain-specific differences were observed. D-strain crickets reduced autophagy, the number of ROS+ cells, and DNA damage. The effect can be a symptom of mobilization of the organism and stimulation of physiological defense mechanisms in long-living organisms. The 2nd-generation D-strain insects fed ND-spiked food at higher concentrations manifested a reduction in CAT, TAC, early apoptosis, and DNA damage, together with an increase in HSP70 and defensins. ROS+ cells and cells with reduced membrane potential and autophagy did not differ significantly from the control. H-strain insects revealed a higher number of ROS+ cells and cells with reduced membrane potential, decreased CAT activity, and early apoptosis. Elimination of NDs from the diet in the 3rd generation did not cause full recovery of the measured parameters. We noticed an increase in the concentration of HSP70 and defensins (H-strain) and a decrease in apoptosis (D-strain). However, the most visible increase was a significant increase in DNA damage, especially in H-strain individuals. The results suggest prolonged adverse effects of NDs on cellular functions, reaching beyond “contact time” with these particles. Unintentional and/or uncontrolled ND pollution of the environment poses a new challenge for all organisms inhabiting it, particularly during multigenerational exposure