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Sports Medicine

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https://www.readbyqxmd.com/read/28229390/the-reproducibility-of-blood-acid-base-responses-in-male-collegiate-athletes-following-individualised-doses-of-sodium-bicarbonate-a-randomised-controlled-crossover-study
#1
Lewis A Gough, Sanjoy K Deb, Andy S Sparks, Lars R McNaughton
BACKGROUND: Current evidence suggests sodium bicarbonate (NaHCO3) should be ingested based upon the individualised alkalotic peak of either blood pH or bicarbonate (HCO3(-)) because of large inter-individual variations (10-180 min). If such a strategy is to be practical, the blood analyte response needs to be reproducible. OBJECTIVE: This study aimed to evaluate the degree of reproducibility of both time to peak (TTP) and absolute change in blood pH, HCO3(-) and sodium (Na(+)) following acute NaHCO3 ingestion...
February 22, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28229389/erratum-to-polyphenols-and-performance-a-systematic-review-and-meta-analysis
#2
Vaughan Somerville, Cameron Bringans, Andrea Braakhuis
No abstract text is available yet for this article.
February 22, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28224307/endocrinological-roles-for-testosterone-in-resistance-exercise-responses-and-adaptations
#3
David R Hooper, William J Kraemer, Brian C Focht, Jeff S Volek, William H DuPont, Lydia K Caldwell, Carl M Maresh
Chronic increases in testosterone levels can significantly increase hypertrophy and strength, as has been demonstrated by pharmacological intervention. However, decreases in basal testosterone levels can have the opposite result, as has been seen in hypogonadal populations. Because of these profound effects on hypertrophy and strength, testosterone has often been studied in conjunction with resistance exercise to examine whether the endocrine system plays a role in adaptations to the stimulus. Whereas some studies have demonstrated a chronic increase in basal testosterone, others have failed to find an adaptation to regular resistance exercise...
February 21, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28213755/pedagogical-approaches-to-and-effects-of-fundamental-movement-skill-interventions-on-health-outcomes-a-systematic-review
#4
REVIEW
Claire Tompsett, Ross Sanders, Caitlin Taylor, Stephen Cobley
BACKGROUND: Fundamental movement skills (FMS) are assumed to be the basic prerequisite motor movements underpinning coordination of more integrated and advanced movement capabilities. FMS development and interventions have been associated with several beneficial health outcomes in individual studies. OBJECTIVE: The primary aim of this review was to identify FMS intervention characteristics that could be optimised to attain beneficial outcomes in children and adolescents, while the secondary aim was to update the evidence as to the efficacy of FMS interventions on physiological, psychological and behavioural health outcomes...
February 18, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28213754/low-energy-availability-menstrual-dysfunction-and-low-bone-mineral-density-in-individuals-with-a-disability-implications-for-the-para-athlete-population
#5
REVIEW
Cheri A Blauwet, Emily M Brook, Adam S Tenforde, Elizabeth Broad, Caroline H Hu, Eliza Abdu-Glass, Elizabeth G Matzkin
Low energy availability, functional hypothalamic amenorrhea, and low bone mineral density are three interrelated conditions described in athletic women. Although described as the female athlete triad (Triad), males experience similar health concerns. The literature suggests that individuals with a disability may experience altered physiology related to these three conditions when compared with the able-bodied population. The goal of this review is to describe the unique implications of low energy availability, low bone mineral density, and, in females, menstrual dysfunction in individuals with a disability and their potential impact on the para athlete population...
February 17, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28197801/team-sports-performance-analysed-through-the-lens-of-social-network-theory-implications-for-research-and-practice
#6
João Ribeiro, Pedro Silva, Ricardo Duarte, Keith Davids, Júlio Garganta
This paper discusses how social network analyses and graph theory can be implemented in team sports performance analyses to evaluate individual (micro) and collective (macro) performance data, and how to use this information for designing practice tasks. Moreover, we briefly outline possible limitations of social network studies and provide suggestions for future research. Instead of cataloguing discrete events or player actions, it has been argued that researchers need to consider the synergistic interpersonal processes emerging between teammates in competitive performance environments...
February 15, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28194720/effects-of-repeated-sprint-training-in-hypoxia-on-sea-level-performance-a-meta-analysis
#7
REVIEW
Franck Brocherie, Olivier Girard, Raphaël Faiss, Grégoire P Millet
BACKGROUND: Repeated-sprint training in hypoxia (RSH) is a recent intervention regarding which numerous studies have reported effects on sea-level physical performance outcomes that are debated. No previous study has performed a meta-analysis of the effects of RSH. OBJECTIVE: We systematically reviewed the literature and meta-analyzed the effects of RSH versus repeated-sprint training in normoxia (RSN) on key components of sea-level physical performance, i.e., best and mean (all sprint) performance during repeated-sprint exercise and aerobic capacity (i...
February 13, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28181208/individual-environment-interactions-in-swimming-the-smallest-unit-for-analysing-the-emergence-of-coordination-dynamics-in-performance
#8
Brice Guignard, Annie Rouard, Didier Chollet, John Hart, Keith Davids, Ludovic Seifert
Displacement in competitive swimming is highly dependent on fluid characteristics, since athletes use these properties to propel themselves. It is essential for sport scientists and practitioners to clearly identify the interactions that emerge between each individual swimmer and properties of an aquatic environment. Traditionally, the two protagonists in these interactions have been studied separately. Determining the impact of each swimmer's movements on fluid flow, and vice versa, is a major challenge. Classic biomechanical research approaches have focused on swimmers' actions, decomposing stroke characteristics for analysis, without exploring perturbations to fluid flows...
February 8, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28150163/fatigue-and-recovery-in-rugby-a-review
#9
REVIEW
Francisco Tavares, Tiaki Brett Smith, Matthew Driller
The physical demands and combative nature of rugby lead to notable levels of muscle damage. In professional rugby, athletes only have a limited timeframe to recover following training sessions and competition. Through the implementation of recovery strategies, sport scientists, practitioners and coaches have sought to reduce the effect of fatigue and allow athletes to recover faster. Although some studies demonstrate that recovery strategies are extensively used by rugby athletes, the research remains equivocal concerning the efficacy of recovery strategies in rugby...
February 2, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28138920/association-between-statin-use-and-prevalence-of-exercise-related-injuries-a-cross-sectional-survey-of-amateur-runners-in-the-netherlands
#10
Esmée A Bakker, Silvie Timmers, Maria T E Hopman, Paul D Thompson, André L M Verbeek, Thijs M H Eijsvogels
BACKGROUND: HMG-CoA reductase inhibitors (statins) are the first-choice therapy for primary prevention of cardiovascular disease. Some maintain that statins cause adverse musculoskeletal outcomes in highly active individuals, but few studies have examined the effects of statins on exercise-related injuries. OBJECTIVE: We sought to compare the prevalence of exercise-related injuries between runners who do or do not use statins. METHODS: Amateur runners (n = 4460) completed an extensive online questionnaire on their exercise patterns and health status...
January 30, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28120239/the-impact-of-random-individual-differences-in-weight-change-on-the-measurable-objectives-of-lifestyle-weight-management-services
#11
Greg Atkinson, Alan M Batterham
Obese adults and children can be referred to lifestyle weight management services (LWMS) in which physical activity and/or dietary advice are delivered. Service providers quantify the 'weight' change between an initial measurement and follow-up measurement(s), which could be 12-24 months later. A control group is usually absent. The aim of this article is to scrutinise the various LWMS objectives for this weight change that are recommended by UK authorities. UK guidelines recommend that an adult LWMS should (A) reduce the sample mean body mass of all enrolled adults by at least 3% and/or (B) reduce the body mass of at least 30% of adults by at least 5%...
January 25, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28120238/neurophysiological-mechanisms-underpinning-stretch-induced-force-loss
#12
REVIEW
Gabriel S Trajano, Kazunori Nosaka, Anthony J Blazevich
It is well known that prolonged passive muscle stretch reduces maximal muscle force production. There is a growing body of evidence suggesting that adaptations occurring within the nervous system play a major role in this stretch-induced force reduction. This article reviews the existing literature, and some new evidence, regarding acute neurophysiological changes in response to passive muscle stretching. We discuss the possible contribution of supra-spinal and spinal structures to the force reduction after passive muscle stretch...
January 24, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28105573/effect-of-movement-velocity-during-resistance-training-on-dynamic-muscular-strength-a-systematic-review-and-meta-analysis
#13
REVIEW
Timothy B Davies, Kenny Kuang, Rhonda Orr, Mark Halaki, Daniel Hackett
BACKGROUND: Movement velocity is an acute resistance-training variable that can be manipulated to potentially optimize dynamic muscular strength development. However, it is unclear whether performing faster or slower repetitions actually influences dynamic muscular strength gains. OBJECTIVE: We conducted a systematic review and meta-analysis to examine the effect of movement velocity during resistance training on dynamic muscular strength. METHODS: Five electronic databases were searched using terms related to movement velocity and resistance training...
January 20, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28102489/genetic-variants-and-anterior-cruciate-ligament-rupture-a-systematic-review
#14
REVIEW
Mustafa Kaynak, Frank Nijman, Joyce van Meurs, Max Reijman, Duncan E Meuffels
BACKGROUND: Studies have shown a familial predisposition for anterior cruciate ligament (ACL) rupture and have been followed by genetic-association studies on polymorphisms in candidate genes in recent years. To date, no systematic review with a best-evidence synthesis has evaluated the influence of genetics on this devastating knee injury. OBJECTIVE: Our objective was to evaluate the association between genetic variants and ACL rupture. METHODS: We performed an extensive search in Embase, MEDLINE, Web of Science, Scopus, PubMed Publisher, Cochrane Register of Clinical Trials, and Google scholar up to 24 August 2015...
January 19, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28102488/performance-and-side-effects-of-supplementation-with-n-acetylcysteine-a-systematic-review-and-meta-analysis
#15
REVIEW
Kate Rhodes, Andrea Braakhuis
BACKGROUND: N-Acetylcysteine (NAC) is a promising antioxidant supplement with potential as an acute strategy to enhance performance in elite sport, but there are concerns about its side effects with high doses. OBJECTIVE: To review the current literature and evaluate the effects of NAC supplementation on sport performance and the risk of adverse effects. METHODS: The literature up to May 2016 was searched on MEDLINE (PubMed), EMBASE, SPORTDiscus, Google Scholar and Scopus databases to identify all studies investigating the effects of NAC supplementation on exercise performance and/or side effects experienced...
January 19, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28097488/polyphenols-and-performance-a-systematic-review-and-meta-analysis
#16
REVIEW
Vaughan Somerville, Cameron Bringans, Andrea Braakhuis
BACKGROUND: Polyphenols exert physiological effects that may impact athletic performance. Polyphenols are antioxidants that have been noted to hinder training adaptations, yet conversely they stimulate stress-related cell signalling pathways that trigger mitochondrial biogenesis and influence vascular function. OBJECTIVE: To determine the overall effect of polyphenols on human athletic performance. METHODS: A search strategy was completed using MEDLINE, EMBASE, CINAHL, AMED and SPORTDiscus in April 2016...
January 17, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28097487/inter-individual-responses-of-maximal-oxygen-uptake-to-exercise-training-a-critical-review
#17
Philip J Williamson, Greg Atkinson, Alan M Batterham
It has recently been reported how to quantify inter-individual differences in the response to an exercise intervention using the standard deviation of the change scores, as well as how to appraise these differences for clinical relevance. In a parallel-group randomised controlled trial, the key trigger for further investigation into inter-individual responses is when the standard deviation of change in the intervention sample is substantially larger than the same standard deviation derived from a suitable comparator sample...
January 17, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28078610/optimization-of-the-return-to-sport-paradigm-after-anterior-cruciate-ligament-reconstruction-a-critical-step-back-to-move-forward
#18
REVIEW
Bart Dingenen, Alli Gokeler
Athletes who have sustained an anterior cruciate ligament (ACL) injury often opt for an ACL reconstruction (ACLR) with the goal and expectation to resume sports. Unfortunately, the proportion of athletes successfully returning to sport is relatively low, while the rate of second ACL injury has been reported to exceed 20% after clearance to return to sport, especially within younger athletic populations. Despite the development of return-to-sport guidelines over recent years, there are still more questions than answers on the most optimal return-to-sport criteria after ACLR...
January 11, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28074412/a-scientific-rationale-to-improve-resistance-training-prescription-in-exercise-oncology
#19
Ciaran M Fairman, Michael C Zourdos, Eric R Helms, Brian C Focht
To date, the prevailing evidence in the field of exercise oncology supports the safety and efficacy of resistance training to attenuate many oncology treatment-related adverse effects, such as risk for cardiovascular disease, increased fatigue, and diminished physical functioning and quality of life. Moreover, findings in the extant literature supporting the benefits of exercise for survivors of and patients with cancer have resulted in the release of exercise guidelines from several international agencies...
January 10, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28058696/size-exponents-for-scaling-maximal-oxygen-uptake-in-over-6500-humans-a-systematic-review-and-meta-analysis
#20
REVIEW
Lorenzo Lolli, Alan M Batterham, Kathryn L Weston, Greg Atkinson
BACKGROUND: Maximal oxygen uptake ([Formula: see text] 2max) is conventionally normalized to body size as a simple ratio or using an allometric exponent < 1. Nevertheless, the most appropriate body size variable to use for scaling and the value of the exponent are still enigmatic. Studies tend to be based on small samples and can, therefore, lack precision. OBJECTIVE: The objective of this systematic review was to provide a quantitative synthesis of reported static allometric exponents used for scaling [Formula: see text] 2max to whole body mass and fat-free mass...
January 6, 2017: Sports Medicine
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