Matzenhaney7393
05).
Soccer shoes generally produce a reduction in the contact plantar surface, especially in the anterior zone and the foot load is higher in the forefoot zone.
Soccer shoes generally produce a reduction in the contact plantar surface, especially in the anterior zone and the foot load is higher in the forefoot zone.
We matched highly trained competitive male and female athletes using maximal oxygen uptake (V̇ O2max) per kg skeletal muscle mass (SMM) to show sex differences in factors limiting V̇ O2max.
Thirteen highly trained male (28±3.0 yr) vs 13 female (21.3±3.0 yr) endurance athletes and 10 male (23.9±3.8 yr) vs 10 female sprinters (21.9±3.3 yr) performed an incremental running treadmill test until exhaustion. Main cardiorespiratory variables were measured using ergospirometry. SMM was determined using the dual X-ray absorptiometry method and a regression equation based on measured appendicular lean soft tissue. Basic hematological parameters were obtained from capillary blood samples taken before exercise.
In both endurance and sprint groups, male athletes had significantly higher muscle mass (by 8-12%) and substantially lower total fat (by 55-58%). For almost all body composition indicators, the effect size of sex differences was very large (Cohens d > 1.4). Male athletes obtained significantly higher values in cardiorespiratory variables (by 12-34%) and factors related to oxygen transport (9-13%). Cohens d of the revealed differences was large or very large in both groups (0.8‒2.1 in sprinters and 0.8‒2.3 in endurance athletes).
Male and female competitive athletes having the same V̇̇ O2max per kg SMM strongly differ in main factors limiting maximum oxygen uptake. These differences are more pronounced in endurancethan in sprint-trained athletes. The strongest differences are seen for body composition (fat, lean, and muscle mass) and central cardiac factors.
Male and female competitive athletes having the same V̇̇ O2max per kg SMM strongly differ in main factors limiting maximum oxygen uptake. These differences are more pronounced in endurancethan in sprint-trained athletes. The strongest differences are seen for body composition (fat, lean, and muscle mass) and central cardiac factors.
Water-polo is an official competitive olympic sport with high energy and technical-tactical demands. The aim of this study was to evaluate the influence of cognitive performance and specific swimming capacities on the selection of youth water polo players to the national water polo team.
There were 83 youth water polo players (mean age 13.61±0.67 years) who attended the Croatian Water Polo Foundation training camps included in this cross-sectional study. Testing included anthropometric measurements, specific swimming capacities and cognitive performance (Stroop test).
Among 83 youth water polo players included in this study there were 13 goalkeepers, 13 center-defenders, 13 centers, 31 perimeter players and 13 wings. Selected players (N=40) performed faster in OffTime (selected 62.99±10.21 s vs. non-selected 69.98±8.93 s, P=0.002) and OnTime (selected 75.61±15.85 s vs. non-selected 86.01±15.40 s, P=0.004) of the Stroop test than non-selected players (N=43). Logistic regression analysis showed significan all specific swimming tests in comparison to non-selected players.
The aim of the study is to examine the relationship between measures of muscle and tendon mechanical properties and strength on countermovement jump (CMJ) performance.
Twenty-six physically active participants (males; n = 16 females; n = 10) were tested. Testing comprised of measuring the mechanical properties of lower limb muscles and tendons using myotonometry, isometric and isokinetic knee extensor strength through dynamometry, and CMJ's with a force platform.
Large positive correlations were observed between CMJ jump height and Achilles tendon stiffness (N/m) (r=0.56) and Achilles tendon tone (Hz) (r=0.553). Large negative correlations were found between CMJ height and Achilles tendon elasticity (r=-0.658), and Achilles tendon relaxation (r=-0.572), and Achilles tendon creep (r=-0.589). Large correlations (r=0.592 to 0.659) were observed between CMJ height and all measures of isometric and isokinetic dynamometry measures. Achilles tendon stiffness, elasticity level and relaxation, and isokinetic peak concentric torque (N.m) explained 63% of this variance.
Greater stiffness of the Achilles tendon may improve CMJ performance due to the improved transfer of concentric and eccentric force of the knee extensor muscles. Practitioners need to implement specific interventions to target increasing Achilles tendon stiffness to improve countermovement jump performance.
Greater stiffness of the Achilles tendon may improve CMJ performance due to the improved transfer of concentric and eccentric force of the knee extensor muscles. Practitioners need to implement specific interventions to target increasing Achilles tendon stiffness to improve countermovement jump performance.
The aim of this study was to examine the associations between maximal and submaximal neuromuscular field tests, match physical activity levels and biological maturation in youth football players.
Sixty-four football players from under 14 to under 17 age groups were assessed. Players performed a Repeated-Sprint Ability test, Counter Movement Jump, 10-m and 30-m sprint test, as well as an assessment of peripheral muscle function following a multi-stage incremental (i.e. four intensity levels) change of direction test (COD). Knee extensors peak-torque (PTmax) and the decrement of torque values (dec) were considered as COD outcomes. Physical match activities were tracked by GPS technology, while rate of perceived exertion (RPE) was assessed using the CR10 Börg scale. Pearson's correlations (90% confidence interval) were used to examine the relationships.
Small associations were found between field tests and match activities. The relationships increased from small to moderate for some tests when match data with RPE>5 were considered. The largest associations were found between distance covered <-2.5m·s-2 and both COD PTmax and dec when RPE>5.
The results of the present study provide further evidence of a small-to-moderate association between muscular performance and match work-rate in young football players. Although physical and physiological evaluations fail to precisely estimate the quantity of physical activities performed during matches, it is suggested that they can be utilized to monitor the training effect over time in young football players.
The results of the present study provide further evidence of a small-to-moderate association between muscular performance and match work-rate in young football players. Although physical and physiological evaluations fail to precisely estimate the quantity of physical activities performed during matches, it is suggested that they can be utilized to monitor the training effect over time in young football players.
To assess the reliability of the postoperative radiographic Matta grading for quality of reduction of acetabular fractures.
An inter-reliability and intrareliability study.
Level I trauma center.
15 independent observers of different levels of experience who evaluated 115 sets of postoperative acetabulum radiographs in 35 consecutive patients with displaced acetabular fractures between January 2017 and January 2019.
To assess the interobserver and intraobserver reliability of Matta radiographic grading for postoperative quality of reduction of acetabular fractures.
The overall interobserver agreement was excellent among all groups with an average absolute intraclass correlation coefficient (ICC) of 0.91 (95% CI 0.93-0.97). When stratifying the agreement based on experience, the orthopaedic trauma fellow subgroup had the highest rate with an ICC of 0.92. The overall intraobserver agreement was good with an ICC of 0.81 (95% CI 0.74-0.85).
The Matta radiographic grading was a reliable tool for the evaluation of quality of reduction after surgical fixation of acetabular fractures with excellent interobserver and good intraobserver reliabilities among different levels of observers.
The Matta radiographic grading was a reliable tool for the evaluation of quality of reduction after surgical fixation of acetabular fractures with excellent interobserver and good intraobserver reliabilities among different levels of observers.
The North Carolina Board of Nursing (NCBON) implemented an alternative-to-discipline program (AP) in 1995 for nurses experiencing a substance use disorder. Floxuridine research buy There have been programmatic changes since the inception of the AP. However, COVID-19 posed significant challenges related to balancing the NCBON's public protection mandate against COVID-19 impacts on the nurse's ability to comply with the AP conditions. The changes to the AP structure in response to COVID-19 included transition from in-person orientation interviews to virtual, drug screening process modifications, acceptance of virtual treatment and 12-step meeting attendance, and specific employment condition waiver accommodations. The NCBON identified modifications facilitated opportunities for nurses to remain compliant with the conditions of the AP while meeting the mandate of public protection.
The North Carolina Board of Nursing (NCBON) implemented an alternative-to-discipline program (AP) in 1995 for nurses experiencing a substance use disorder. There have been programmatic changes since the inception of the AP. However, COVID-19 posed significant challenges related to balancing the NCBON's public protection mandate against COVID-19 impacts on the nurse's ability to comply with the AP conditions. The changes to the AP structure in response to COVID-19 included transition from in-person orientation interviews to virtual, drug screening process modifications, acceptance of virtual treatment and 12-step meeting attendance, and specific employment condition waiver accommodations. The NCBON identified modifications facilitated opportunities for nurses to remain compliant with the conditions of the AP while meeting the mandate of public protection.
The past 2 years has been a challenge as society made huge adaptations to keep people safe from COVID-19 and struggled to continue life on a day-to-day basis. Working with families, young adults, and adolescents, nurses are often faced with caring for individuals who recreationally use cannabis and believe use is harmless. Adolescents as a group tend to appraise information from a different lens than adults. In an evolving world, where cannabis is legalized for medicinal and recreational use, it is important to shift the paradigm of how we approach cannabis use in adolescents. This article will focus on COVID-19's impact on cannabis use in adolescents and apply the transtheoretical model of change to promote safer choices while supporting adolescent autonomy. In addition, we will incorporate behavioral health strategies to reduce risks of cannabis use by equipping adolescents with guidelines, boundaries, and tools.
The past 2 years has been a challenge as society made huge adaptations to keep people safe from COVID-19 and struggled to continue life on a day-to-day basis.
