PLoS One
June 2023
Background: It is not yet known whether the years after peak height velocity (PHV) are associated with the physiological mechanisms of muscle strength and power in Juniors rowers.
Objective: To identify the association between years post PHV (YPPHV) with muscle power and strength in Juniors rowers.
Methods: We tested 235 Brazilian rowing athletes (male: 171, female: 64, Juniors category).
Background: High frequency (1-2 times per day) low-intensity blood flow restriction (BFR) training has been recommended as a prescription approach for short durations of time to maximize relevant physiological adaptations. However, some studies demonstrate negative physiological changes after short periods of high-frequency BFR training, including prolonged strength decline and muscle fiber atrophy.
Objectives: To provide a comprehensive overview of short-term, high-frequency blood flow restriction training, including main adaptations, myocellular stress, limitations in the literature, and future perspectives.
Context: Several studies have compared perceptual responses between resistance exercise with blood flow restriction and traditional resistance exercise (non-BFR). However, the results were contradictory.
Objectives: To analyze the effect of RE+BFR versus non-BFR resistance exercise [low-load resistance exercise (LL-RE) or high-load resistance exercise (HL-RE)] on perceptual responses.
PLoS One
November 2021
Background: The literature identifies several factors that are associated with lower limb performance (LLP). However, there is little consensus on which factors have the major associations with LLP.
Objective: Examine, analyze and summarize the scientific evidence on the factors associated with the performance of LLP in children and adolescents of both sexes aged between 7 and 17 years.
Background: The biological maturation (BM) analyzed by peak height velocity (PHV) and bone age (BA), and lean body mass has been associated with the strength and muscle power of young athletes. However, the ability of BM (PHV and BA) and LM markers to predict muscle strength and power in young athletes remains uncertain.
Objective: The Aim was determine the predicting power of BM markers (PHV and BA) and LM in relation to muscle power of upper and lower limbs and muscle strength of upper limbs in adolescent athletes at puberty.
Background: The growth and development cycle of the adult is characterized by substantial changes in physical size and maturity, and is controlled by the simultaneous influence of genetic components and the environment. Changes in the development of bones, muscles and adipose tissue are among the most important aspects of adolescent physical development. The aim of this research was to examine the correlation between bone mineral density (BMD) and neuromuscular performance in children at different stages of maturation.
View Article and Find Full Text PDF: Mechanisms that influence muscle strength can interfere with neuromotor performance and overall health, thus hormone markers and maturation can interact in this process. Objective: The present study aimed to verify the relationship of hormonal markers and biological maturation on neuromotor abilities in young people. : This is a cross-sectional study with 44 female participants (11.
View Article and Find Full Text PDFProlonged use of antiretroviral therapy (ART) has been associated with dyslipidemia and impaired energy substrate oxidation (SOxi). Curcumin is a natural bioactive compound, which interacts with molecular targets and holds important metabolic properties. The aim of this study was to evaluate the effect of curcumin supplementation on energetic metabolism of an adult female with HIV/AIDS and under ART.
View Article and Find Full Text PDFObjective: The aim of this experimental study was to compare the effects of different forms of training and life styles on hemodynamic markers, cardiac capacity, Waist-to-Hip Ratio-WHR and Body Mass Index-BMI in elders, between 60-69 years, of both sexes.
Materials And Methods: The sample was composed of elders, between 60-69 years, of both sexes: masculine N=159 and feminine N=157. They were divided into three groups: experimental 1: n=53 (masculine) and n=51 (feminine) activity: cardio respiratory endurance; experimental 2: n=53 (masculine) and n=53 (feminine) activity: resistance training with Local Muscle Resistance-RML; control group: n=53 (masculine) and n=53 (feminine) who didn t practice any regular physical activity, considered sedentary.
Objectives: Describe the characteristics of body composition, somatotype, basic physical qualities, dermatoglyphics and bone age regarding sexual maturation stages of boys.
Methods: A transversal study was carried out in 136 boys, between 10 and 14 years of age. Clinical assessment, physical examination and radiography of wrists and hands to calculate bone age were performed.
Objective: This study was aimed at showing the relationship of the Human Development Index (HDI) in different areas of Brazil to body composition variable patterns, thereby indicating these variables' nutritional status and the suitability of their use.
Material And Methods: This was a descriptive, cross-sectional, comparative study. The sample consisted of male and female state school students aged 8 to 10 years old from 3 regions of Brazil .