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Reactive strength index modified

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https://www.readbyqxmd.com/read/28654438/differences-in-athletic-performance-between-sportsmen-with-symptomatic-femoroacetabular-impingement-and-healthy-controls
#1
Karen Mullins, Michael Hanlon, Patrick Carton
OBJECTIVE: Femoroacetabular impingement (FAI) is a commonly recognized condition in athletes characterized by activity-related hip pain and stiffness, which if left untreated can progress to hip osteoarthritis. The aim of the study was to determine the effect of symptomatic FAI on performance in young athletes based on the hypothesis that athletes with FAI would show deficits in performance compared with healthy controls. DESIGN: The functional performance of a cohort of preoperative, competitive sportsmen with symptomatic FAI (FAI group, n = 54), was compared with that of a group of age, sex and activity-level matched controls (n = 66)...
June 22, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28605214/influence-of-reactive-strength-index-modified-on-force-and-power-time-curves
#2
John J McMahon, Paul A Jones, Timothy J Suchomel, Jason Lake, Paul Comfort
PURPOSE: The reactive strength index modified (RSImod) has been recently identified and validated as a method of monitoring countermovement jump (CMJ) performance. The kinetic and kinematic mechanisms that optimize a higher RSImod score are, however, currently unknown. The purpose of this study, therefore, was to compare entire CMJ force-, power-, velocity- and displacement-time curves (termed temporal phase analysis) of athletes who achieve high versus low RSImod scores. METHODS: Fifty-three professional male rugby league players performed three maximal effort CMJs on a force platform and variables of interest were calculated via forward dynamics...
June 12, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28448584/sarcopenia-in-patients-with-chronic-kidney-disease-not-yet-on-dialysis-analysis-of-the-prevalence-and-associated-factors
#3
Viviane Angelina de Souza, Dílmerson Oliveira, Sérgio Ribeiro Barbosa, José Otávio do Amaral Corrêa, Fernando Antônio Basile Colugnati, Henrique Novais Mansur, Natália Maria da Silva Fernandes, Marcus Gomes Bastos
INTRODUCTION: Sarcopenia is a chronic condition that is associated with aging and characterized by a reduction of muscle mass, strength, and function. Sarcopenia is prevalent in patients with chronic kidney disease (CKD) and associated with increased morbidity and mortality, as well as cardiovascular complications. OBJECTIVES: To investigate the prevalence of sarcopenia in patients with CKD not yet on dialysis and its correlation with clinical and laboratory variables and inflammatory markers...
2017: PloS One
https://www.readbyqxmd.com/read/27918658/countermovement-jump-phase-characteristics-of-senior-and-academy-rugby-league-players
#4
John J McMahon, Shannon Murphy, Sophie J E Rej, Paul Comfort
PURPOSE: Gross measures of countermovement-jump (CMJ) performance are commonly used to track maturational changes in neuromuscular function in rugby league (RL). The purpose of this study was to conduct both a gross and a more detailed temporal-phase analysis of the CMJ performances of senior and academy RL players, to provide greater insight into how neuromuscular function differs between these groups. METHODS: Twenty senior and 14 academy (under-19) male RL players performed 3 maximal-effort CMJs on a force platform, with forward dynamics subsequently employed to allow gross performance measures and entire kinetic- and kinematic-time curves to be compared between groups...
July 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27835625/use-of-treponemal-screening-assay-strength-of-signal-to-avoid-unnecessary-confirmatory-testing
#5
Gregory J Berry, Michael J Loeffelholz
BACKGROUND: Our reverse syphilis testing algorithm consists of a treponemal IgG multiplex flow immunoassay (MFI) followed by both rapid plasma reagin titer and the Treponema pallidum particle agglutination (TPPA) test on specimens with a reactive MFI result. We report here the impact of a modified reverse algorithm, in which the strength of signal of the MFI is used to avoid unnecessary TPPA testing. METHODS: The Bioplex syphilis IgG MFI was used as the syphilis screening assay, and specimens with equivocal (antibody index 0...
December 2016: Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/27222742/application-of-waste-bulk-moulded-composite-bmc-as-a-filler-for-isotactic-polypropylene-composites
#6
Mateusz Barczewski, Danuta Matykiewicz, Jacek Andrzejewski, Katarzyna Skórczewska
The aim of this study was to produce isotactic polypropylene based composites filled with waste thermosetting bulk moulded composite (BMC). The influence of BMC waste addition (5, 10, 20 wt%) on composites structure and properties was investigated. Moreover, additional studies of chemical treatment of the filler were prepared. Modification of BMC waste by calcium stearate (CaSt) powder allows to assess the possibility of the production of composites with better dispersion of the filler and more uniform properties...
May 2016: Journal of Advanced Research
https://www.readbyqxmd.com/read/26439787/reactive-strength-index-modified-is-a-valid-measure-of-explosiveness-in-collegiate-female-volleyball-players
#7
Kristof Kipp, Michael T Kiely, Christopher F Geiser
The purpose of this study was to investigate the validity of the reactive strength index modified (RSImod) as a measure of lower body explosiveness. Fifteen female, National Collegiate Athletic Association Division I volleyball players performed vertical countermovement jumps (CMJs) while standing on a force plate. Each player performed 3 CMJs. The vertical ground reaction forces collected during each jump were used to calculate jump height, time to take-off, time to peak force, peak force, peak rate of force development, and peak power; the latter 3 variables were all normalized to body mass...
May 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/26200196/comparison-of-methods-that-assess-lower-body-stretch-shortening-cycle-utilization
#8
COMPARATIVE STUDY
Timothy J Suchomel, Christopher J Sole, Michael H Stone
The purpose of this study was to compare 4 methods that assess the lower-body stretch-shortening cycle (SSC) utilization of athletes. Eighty-six National Collegiate Athletic Association Division I athletes from 6 different sports performed 2 squat jumps and 2 countermovement jumps on a force platform. Pre-stretch augmentation percentage (PSAP), eccentric utilization ratio (EUR), and reactive strength (RS) for jump height (JH) and peak power (PP) magnitudes, and reactive strength index-modified (RSImod) were calculated for each team...
February 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/26125190/sex-specific-mediating-role-of-insulin-resistance-and-inflammation-in-the-effect-of-adiposity-on-blood-pressure-of-prepubertal-children
#9
Liane Correia-Costa, Ana Cristina Santos, Milton Severo, António Guerra, Franz Schaefer, Alberto Caldas Afonso, Henrique Barros, Ana Azevedo
OBJECTIVE: To evaluate the association between obesity indices and blood pressure (BP) at 4 years of age, in each sex, and to quantify to which extent this association is mediated by inflammation and insulin resistance (IR). MATERIALS AND METHODS: We studied 1250 4-year-old children selected from the population-based birth cohort Generation XXI. Associations between body mass index (BMI) z-score and waist-to-height ratio (WHtR), office BP, inflammation (high sensitivity C-reactive protein) and IR (HOMA-IR index) were assessed...
2015: PloS One
https://www.readbyqxmd.com/read/25436634/a-comparison-of-reactive-strength-index-modified-between-six-u-s-collegiate-athletic-teams
#10
COMPARATIVE STUDY
Timothy J Suchomel, Christopher J Sole, Christopher A Bailey, Jacob L Grazer, George K Beckham
The purpose of this study was to examine the differences in reactive strength index-modified (RSImod), jump height (JH), and time to takeoff (TTT) between 6 U.S. collegiate sport teams. One hundred six male and female Division I collegiate athletes performed unloaded (<1 kg) and loaded (20 kg) countermovement jumps as part of an ongoing athlete monitoring program. Reactive strength index-modified, JH, and TTT values for each team were compared using 1-way analysis of variance. Statistically significant differences in RSImod (p < 0...
May 2015: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/25426515/using-reactive-strength-index-modified-as-an-explosive-performance-measurement-tool-in-division-i-athletes
#11
Timothy J Suchomel, Christopher A Bailey, Christopher J Sole, Jacob L Grazer, George K Beckham
The purposes of this study included examining the reliability of reactive strength index-modified (RSImod), the relationships between RSImod and force-time variables, and the differences in RSImod between male and female collegiate athletes. One hundred six Division I collegiate athletes performed unloaded and loaded countermovement jumps (CMJs). Intraclass correlation coefficients and typical error expressed as a coefficient of variation were used to establish the relative and absolute reliability of RSImod, respectively...
April 2015: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/24809429/effects-of-oral-nutritional-supplementation-in-the-management-of-malnutrition-in-hospital-and-post-hospital-discharged-patients-in-india-a-randomised-open-label-controlled-trial
#12
RANDOMIZED CONTROLLED TRIAL
D T T Huynh, A A Devitt, C L Paule, B R Reddy, P Marathe, R A Hegazi, F J Rosales
BACKGROUND: Hospital malnutrition is a significant problem that still remains under-recognised and under-treated in India. The present study assessed the effects of oral nutritional supplementation (ONS) in conjunction with dietary counselling versus dietary counselling (control) alone in malnourished patients when given in hospital and post-hospital discharge. METHODS: The present study was conducted in nine private and four public hospitals. Patients from various medical wards were screened for malnutrition using modified Subjective Global Assessment (mSGA) and randomised to control (n = 106) or ONS (n = 106) for 12 weeks...
August 2015: Journal of Human Nutrition and Dietetics: the Official Journal of the British Dietetic Association
https://www.readbyqxmd.com/read/24766234/leptin-vitamin-d-and-cardiorespiratory-fitness-as-risk-factors-for-insulin-resistance-in-european-adolescents-gender-differences-in-the-helena-study
#13
COMPARATIVE STUDY
David Jiménez-Pavón, María A Sesé, Jara Valtueña, Magdalena Cuenca-García, Marcela González-Gross, Frederic Gottrand, Anthony Kafatos, Yannis Manios, Kurt Widhalm, Stefaan de Henauw, Angela Polito, Faustino R Pérez-López, Luis A Moreno
The purpose of this study was to identify the relevance of a set of risk factors for insulin resistance in adolescents from Europe and to consider their possible gender-specific associations. The Healthy Lifestyle in Europe by Nutrition in Adolescence Cross-Sectional Study (HELENA-CSS) was conducted in 1053 European adolescents (mean age, 14.9 years) in a school setting in 9 countries. Three anthropometric markers of body fat and a dietary index were calculated. Total energy intake was estimated from a questionnaire...
May 2014: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/23982394/risk-factors-for-posterior-shoulder-instability-in-young-athletes
#14
Brett D Owens, Scot E Campbell, Kenneth L Cameron
BACKGROUND: While posterior glenohumeral instability is becoming increasingly common among young athletes, little is known of the risk factors for injury. PURPOSE: To determine the modifiable and nonmodifiable risk factors for posterior shoulder instability in a high-risk cohort. STUDY DESIGN: Case-control study (prognosis); Level of evidence, 2. METHODS: A prospective cohort study in which 714 young athletes were followed from June 2006 through May 2010 was conducted...
November 2013: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/23708239/short-term-cardiovascular-physical-programme-ameliorates-arterial-stiffness-and-decreases-oxidative-stress-in-women-with-metabolic-syndrome
#15
Marcos Antonio Eleutério-Silva, Lucas José Sá da Fonseca, Elizabeth P P Velloso, Glaucevane da Silva Guedes, Walkyria O Sampaio, Weriton Ferreira da Silva, Marco Antonio Mota-Gomes, Lucy V da Silva Lima, Robson Augusto S Santos, Luiza A Rabelo
OBJECTIVE: To evaluate the impact of a short-term cardiovascular physical programme on the metabolic, anthropometric and oxidative stress parameters of women with metabolic syndrome. METHODS: Thirty sedentary female patients, age range 30-60 years, were invited to participate in a 6-week cardiovascular physical programme. The training consisted of 60-min sessions of aerobic and strength exercises performed 3 times a week; a total of 18 sessions. Anthropometric data, functional exercise capacity, general biochemical profile, serum lipid peroxidation, superoxide dismutase and catalase activity in erythrocytes were evaluated according to standardized protocols...
June 2013: Journal of Rehabilitation Medicine
https://www.readbyqxmd.com/read/23312214/correlation-between-endothelial-function-measured-by-finger-plethysmography-in-children-and-hdl-mediated-enos-activation-a-preliminary-study
#16
Ulrike Müller, Yae Matsuo, Maximilian Lauber, Claudia Walther, Andreas Oberbach, Gerhard Schuler, Volker Adams
BACKGROUND: The noninvasive measurement of endothelial function is a very powerful tool to assess cardiovascular disease. Especially in children this is not an easy task, and therefore an easy method like the Endo-Pat device is helpful. Due to the still existing uncertainties of the validity of endothelial measurement by the Endo-PAT device in children, we thought to analyze the correlation between endothelial functional measurement by Endo-PAT, and the capability of HDL to modify nitric oxide (NO) production by phosphorylation of endothelial nitric oxide synthase at the stimulatory site (Ser(1177)) and the inhibitory site (Thr(495))...
May 2013: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/22968156/the-relationship-between-acl-injuries-and-physical-fitness-in-young-competitive-ski-racers-a-10-year-longitudinal-study
#17
Christian Raschner, Hans-Peter Platzer, Carson Patterson, Inge Werner, Reinhard Huber, Carolin Hildebrandt
BACKGROUND: Epidemiological studies have shown a high incidence of anterior cruciate ligament (ACL) injuries among competitive alpine skiers. Little is known regarding modifiable risk factors in young skiers. There are still uncertainties in gender-related risk factors. OBJECTIVE: The purpose of this study was to determine the relationship between ACL injuries and internal risk factors. METHODS: Retrospective data analyses were performed based on a group of 175 female and 195 male alpine ski racers between the ages of 14 and 19 years...
December 2012: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/22399699/changes-in-physical-fitness-predict-improvements-in-modifiable-cardiovascular-risk-factors-independently-of-body-weight-loss-in-subjects-with-type-2-diabetes-participating-in-the-italian-diabetes-and-exercise-study-ides
#18
RANDOMIZED CONTROLLED TRIAL
Stefano Balducci, Silvano Zanuso, Patrizia Cardelli, Laura Salvi, Giulia Mazzitelli, Alessandra Bazuro, Carla Iacobini, Antonio Nicolucci, Giuseppe Pugliese
OBJECTIVE: Physical fitness is inversely related to mortality in the general population and in subjects with type 2 diabetes. Here, we present data concerning the relationship between changes in physical fitness and modifiable cardiovascular risk factors in subjects with type 2 diabetes from the Italian Diabetes and Exercise Study. RESEARCH DESIGN AND METHODS: Sedentary patients with type 2 diabetes (n = 606) were enrolled in 22 outpatient diabetes clinics and randomized to twice-a-week supervised aerobic and resistance training plus exercise counseling versus counseling alone for 12 months...
June 2012: Diabetes Care
https://www.readbyqxmd.com/read/22085763/identifying-critically-ill-patients-who-benefit-the-most-from-nutrition-therapy-the-development-and-initial-validation-of-a-novel-risk-assessment-tool
#19
Daren K Heyland, Rupinder Dhaliwal, Xuran Jiang, Andrew G Day
INTRODUCTION: To develop a scoring method for quantifying nutrition risk in the intensive care unit (ICU). METHODS: A prospective, observational study of patients expected to stay > 24 hours. We collected data for key variables considered for inclusion in the score which included: age, baseline APACHE II, baseline SOFA score, number of comorbidities, days from hospital admission to ICU admission, Body Mass Index (BMI) < 20, estimated % oral intake in the week prior, weight loss in the last 3 months and serum interleukin-6 (IL-6), procalcitonin (PCT), and C-reactive protein (CRP) levels...
2011: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/21532534/associations-between-parameters-of-nutritional-status-and-disease-activity-in-patients-with-rheumatoid-arthritis
#20
Bożena Targońska-Stępniak, Maria Majdan
INTRODUCTION: In patients with rheumatoid arthritis (RA), the loss of body cell mass is observed, known as rheumatoid cachexia. Cachexia is associated with increased morbidity and premature mortality of RA patients. OBJECTIVES: The aim of the study was to assess the effect of chronic inflammation and disease activity on nutritional status in RA patients. PATIENTS AND METHODS: In 140 patients with RA (111 women, 29 men), RA activity was measured using the Disease Activity Score in 28 joints (DAS28) and using the Modified Health Assessment Questionnaire (M-HAQ)...
April 2011: Polskie Archiwum Medycyny Wewnętrznej
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