Learning the hang power clean: kinetic, kinematic, and technical changes in four weightlifting naive athletes

The investment in learning required to reach benefit with weightlifting training is currently not well understood in elite athletes. The purpose of this investigation was to quantify changes in vertical jump power production and kinematic variables in hang power clean (HPC) performance during the learning process from a naive state in a multiple single-subject research design. Four elite athletes undertook HPC learning for approximately 20-30 minutes twice per week over a 169-day period. Changes in parameters of vertical power production during squat jump (SJ) and countermovement jump (CMJ) were monitored from baseline (day 0) and at 3 additional occasions. Hang power clean movement kinematics and bar path traces were monitored from day 35 and at 3 additional occasions particular to the individual's periodized training plan. Descriptive statistics were reported within athletes as mean ± SD. We observed a 14.1-35.7% (SJ) and a -14.4 to 20.5% (CMJ) gain in peak power across the 4 jump testing occasions with improvements over the first 4 weeks (SJ: 9.2-32.6%; CMJ: -2.91 to 20.79%). Changes in HPC movement kinematics and barbell path traces occurred for each athlete indicating a more rearward-directed center of pressure over the concentric phase, greater double knee bend during the transition phase, decreased maximal plantar flexion, and minimal vertical displacement of body mass with HPC learning. Considering the minimal investment of 4 weeks to achieve increases in vertical power production, the benefits of training with HPC justified the associated time costs for these 4 elite athletes.

The applicability of self-regulation theories in sport: Goal adjustment capacities, stress appraisals, coping, and well-being among athletes

We examined a model, informed by self-regulation theories from the health psychology literature, which included goal adjustment capacities, appraisals of challenge and threat, coping, and well-being. Two-hundred and twelve athletes from the United Kingdom (n 147)= or Australia (n = 65), who played team (n = 135) or individual sports (n = 77), and competed at international (n = 7), national (n = 11), county (n = 67), club (n = 84), or beginner (n = 43) levels participated in this study. Participants completed measures of goal adjustment capacities and stress appraisals two days before competing. Athletes also completed coping and well-being questionnaires within three hours of their competition ending.The way an athlete responded to an unattainable goal was associated with his or her well-being in the period leading up to and including the competition. Goal reengagement positively predicted well-being, whereas goal disengagement negatively predicted well-being. Further, goal reengagement was positively associated with challenge appraisals, which in turn was linked to task-oriented coping, and task-oriented coping positively associated with well-being.When highly-valued goals become unattainable, consultants and coaches could encourage athletes to generate alternative approaches to achieve the same goal or help them develop a completely new goal in order to promote well-being among athletes.

Elite athletes as charitable ambassadors: risks associated with indiscretions

Elite athletes can reach a level of notoriety where media and fans are interested in various aspects of their lives beyond that of their on-field success or failure. By receiving this level of attention, these sporting celebrities attract sponsorships from commercial, fee-paying corporations. With considered alignment, manufacturers can enhance the visibility of their product with target audiences that consume every aspect of the lives of celebrity endorsers. While this form of commodification has been explored from the perspective of the private sector, there is limited research that reflects on the ambassador relationship between sport celebrities and charitable organisations.While a charity ambassador role omits financial support, a win-win outcome can be achieved. Enhanced visibility can benefit both parties: the sports celebrity adds another dimension to their personal brand portfolio, and the charitable organisation broadens awareness of their social issue. Retired athletes continue to harbour desirable brand equity; they have ongoing potential to reach to multiple stakeholders and act as important catalysts for social change.Whilst heightened visibility of an issue is desired, the immense stakeholder interest in the life of a successful athlete has a downside if the celebrity transgresses. Minor transgressions may pass with little impact, yet what constitutes a minor transgression for one set of stakeholders may result in reputational damage for both athlete and brand. Adopting a case study approach, this chapter investigates the construction of the sports celebrity persona at various stages of their career and the response by all actors to transgressions.Findings reveal that media framing of successful sports personalities can exacerbate future failings and heighten the impact on stakeholders, thus lessening their viability and longevity as positive social catalysts. Replicating actions adopted by the private sector, charitable​ organisations may respond to scandals by immediately severing the relationship, or at the other extreme, provide visible support as the celebrity seeks to repair and restore their image. The cases lead to a cohesive set of risk assessment considerations.

Musculoskeletal asymmetry in football athletes: A product of limb function over time.

PURPOSE: Asymmetrical loading patterns are commonplace in football sports. Our aim was to examine the influence of training age and limb function on lower-body musculoskeletal morphology. METHODS: Fifty-five elite football athletes were stratified into less experienced (≤3 yr; n = 27) and more experienced (>3 yr; n = 28) groups by training age. All athletes underwent whole-body dual-energy x-ray absorptiometry scans and lower-body peripheral quantitative computed tomography tibial scans on the kicking and support limbs. RESULTS: Significant interactions between training age and limb function were evident across all skeletal parameters (F16, 91 = 0.182, P = 0.031, Wilks Λ = 0.969). Asymmetries between limbs were significantly larger in the more experienced players than the less experienced players for tibial mass (P ≤ 0.044, d ≥ 0.50), total cross-sectional area (P ≤ 0.039, d ≥ 0.53), and stress-strain indices (P ≤ 0.050, d ≥ 0.42). No significant asymmetry was evident for total volumetric density. More experienced players also exhibited greater lower-body tibial mass (P ≤ 0.001, d ≥ 1.22), volumetric density (P ≤ 0.009, d ≥ 0.79), cross-sectional area (P ≤ 0.387, d ≥ 0.21), stress-strain indices (P ≤ 0.012, d ≥ 0.69), fracture loads (P ≤ 0.018, d ≥ 0.57), and muscle mass and cross-sectional area (P ≤ 0.016, d ≥ 0.68) than less experienced players. CONCLUSIONS: Asymmetries were evident in athletes as a product of limb function over time. Chronic exposure to routine high-impact gravitational loads afforded to the support limb preferentially improved bone mass and structure (cross-sectional area and cortex thickness) as potent contributors to bone strength relative to the high-magnitude muscular loads predominantly afforded to the kicking limb.

Pre-exercise nutritional strategies: effects on metabolism and performance

The goals of pre-exercise nutritional strategies are to optimise the availability of carbohydrate (CHO) and fluid. Ingestion of CHO 3-4 hr prior to exercise can increase liver and muscle glycogen stores and has been associated with enhanced endurance exercise performance. The metabolic effects of CHO ingestion persist for at least 6 hr. Although an increase in plasma insulin following CHO ingestion in the hour prior to exercise inhibits lipolysis and liver glucose output, and can lead to transient hypoglycemia during subsequent exercise, there is no convincing evidence that this is always associated with impaired exercise performance. Having said that, individual experience should inform individual practice. Interventions to increase plasma FFA availability prior to exercise have been shown to reduce CHO utilisation during exercise, but do not appear to have major ergogenic benefits. It is more difficult to hyperhydrate prior to exercise and although there has been interest in glycerol ingestion, to date research results have been equivocal. At the very least, athletes should ensure euhydration prior to exercise.

Quality of life improvements after sports injury

Over the past decade, there has been an increase in available data describing the incidence of sports injuries. However, the outcomes of such injuries remain relatively undocumented. Psychological aspects of sports injury rehabilitation have been documented in elite athletes but not in cohorts of general sports participants. The few studies that have described the financial costs of sports injuries have typically not assessed how these injuries affect quality of life. Despite recent estimates that lost quality of life accounts for 81% of total sports injury costs,1 this has received relatively little attention in the literature. The aim of this paper is to describe the quality of life outcomes associated with sports injuries and to present some preliminary observations about how these change over a six-week period.

The sources of stress experienced by professional Australian footballers

Previous studies looking at the sources of stress in sport have generally overlooked the unique experiences of professional athletes participating in team sports. This paper describes the results of a qualitative study aimed at identifying the sources of stress experienced by a cross-section of professional Australian footballers. Players from two Australian Football League clubs took part in the study involving in-depth, one-to-one interviews and focus group discussions. The results revealed that players identified sources of stress that went beyond those associated with the competitive event (such as poor performances) and included a lack of feedback, difficulty balancing football and study commitments, and job insecurity. The influence of both competition and non-competition sources of stress parallels previous research involving non-professional athletes and indicates that the entire sporting experience needs to be taken into account when developing stress management strategies.

Improving the precision of the accumulated oxygen deficit using VO2-power regression points from below and above the lactate threshold

The accumulated oxygen deficit (AOD) method assumes a linear VO₂-power relationship for exercise intensities increasing from below the lactate threshold (BLT) to above the lactate threshold (ALT). Factors that were likely to effect the linearity of the VO₂-power regression and the precision of the estimated total energy demand (ETED) were investigated. These included the slow component of VO₂ kinetics (SC), a forced resting y-intercept and exercise intensities BLT and ALT. Criteria for linearity and precision included the Pearson correlation coefficient (PCC) of the VO₂-power relationship, the length of the 95% confidence interval (95% CI) of the ETED and the standard error of the predicted value (SEP), respectively. Eight trained male and one trained female triathlete completed the required cycling tests to establish the AOD when pedalling at 80 rev/min. The influence of the SC on the linear extrapolation of the ETED was reduced by measuring VO₂ after three min of exercise. Measuring VO₂ at this time provided a new linear extrapolation method consisting of ten regression points spread evenly from BLT and ALT. This method produced an ETED with increased precision compared to using regression equations developed from intensities BLT with no forced y-intercept value; (95%CI (L), 0.70±0.26 versus 1.85±1.10, P<0.01; SEP(L/Watt), 0.07±0.02 versus 0.28±0.17; P<0.01). Including a forced y-intercept value with five regression points either BLT or ALT increased the precision of estimating the total energy demand to the same level as when using 10 regression points, (5 points BLT + y-intercept versus 5 points ALT + y-intercept versus 10 points; 95%CI(l), 0.61±0.32, 0.87±0.40, 0.70±0.26; SEP(L/Watt), 0.07±0.03, 0.08±0.04, 0.07±0.02; p>0.05). The VO₂-power regression can be designed using a reduced number of regression points... ABSTRACT FROM AUTHOR

Discourses of deception: cheating in professional running

Cheating, it is claimed, is anathema to sport. But is this the case? In this paper it is argued that cheating is integral to modern sport, that the model of sport as 'fair play' is simply an ideological guise of amateurism. The paper focuses on the sport of professional running which, since its origins in the eighteenth century, has been a gambling sport. Strategies involving cheating to manipulate wins, or losses, have featured in this sport as ways of increasing the probability of striking successful wagers. Such strategies are an accepted part of professional running: participants anticipate and expect others to be playing it in this way. However, a distinction is made between what is referred to in the paper as 'clean' cheating and 'dirty' cheating. The former is an accepted way of the sport, the latter occurs but is deprecated. The paper explores these different forms of cheating and the athletes' responses to them. Through a focus on the discourses of success in capitalist society, a model of cheating is developed to interpret such practices. Within the context of professional running, a working class sport, it is argued that, given the habitus of its practitioners, 'success' may be measured in terms of monetary gains and the 'kick-on' in life that these might provide. Cheating practices may serve to enhance the probability of success and social mobility. Given the relatively short career spans of sports people and the costs involved in developing the requisite skills, cheating may promote success and establish a financial base for post-sport careers. The paper concludes that cheating in sport can be anticipated as a feature of an acquisitive capitalist society.

Does training affect growth? - answers to common questions

Adolescent athletes may be at risk of restricted growth and delayed maturation when intense training is combined with insufficient energy intake. Because catch-up growth commonly occurs when training is reduced or ceases, final adult stature is unlikely to be compromised. However, in athletes who have long-term, clinically delayed maturation, catch-up growth may be incomplete. By charting individual growth patterns, physicians, coaches, and athletic trainers can detect vulnerable periods when the training intensity should be reduced and energy intake may need to be increased.

Football-as-war, coach-as-general: analogy, metaphor and management implications

Sporting terms have been used as metaphor and analogy to describe and prescribe life experiences. It has been suggested that the use of sport terminology can assist in the general understanding of complex terms and situations, however, the use of sport as metaphor and analogy for many aspects of social understanding can have negative consequences. The analogy of sport and war seems to be particularly prevalent within football, irrespective of the code or culture in which it is played. This article demonstrates the popular understanding of Australian Rules ‘football as war’ through two complementary studies. The first study investigates the representation of Australian Rules football as war, specifically through the analysis of both images and text on the front covers of the sport ‘lift-out’ sections of two prominent Melbourne newspapers, The Herald Sun and The Age. The second study examines whether people interpret non-war-like images of Australian Rules football in war-like terms. Forty-five undergraduate sport marketing and management students were asked to write about one of four different images of football players and coaches interacting, which revealed that football is understood as war. Further, when prompted by an image of football players and coaches interacting, people in this study interpreted the interactions as consistently war-like. Coaches were portrayed as militaristic generals and the athletes as soldiers. Implications for management, education and practice are discussed.

Conspiring to run: women, their bodies and athletics training

Women's athletics commenced about 60 years after the start of the men's sport. Women's involvement in athletics was held back by the medical and general views that this was a strenuous sport requiring a level of exertion beyond the biological capabilities of female bodies. Their difficult initiation into athletics occurred under male gaze; they encountered opposition from the public, the medical profession and from the male-controlled athletics organizations. A serious participation in athletics requires significant exertion and dedicated training. While the prevailing view was that moderate physical exercise without strain enhanced women's health, the exertion required for athletics was deemed to be potentially dangerous. Within essentialist views of gender, women's involvement in athletics was thought to have implications for their nurturing and domestic roles. When the pioneer women athletes tried to excel, they were said to be straining themselves and their participation in the sport was brought into question. By using theoretical insights drawn mostly from Foucault, training manuals from the early decades of women's athletics and material from interviews with some of the first English female athletes are examined to investigate the attitudes of both genders to women in athletics and to analyse how they circumvented the potential veto of their sport by men.

Carbohydrates and fat for training and recovery

An important goal of the athlete's everyday diet is to provide the muscle with substrates to fuel the training programme that will achieve optimal adaptation for performance enhancements. In reviewing the scientific literature on post-exercise glycogen storage since 1991, the following guidelines for the training diet are proposed. Athletes should aim to achieve carbohydrate intakes to meet the fuel requirements of their training programme and to optimize restoration of muscle glycogen stores between workouts. General recommendations can be provided, preferably in terms of grams of carbohydrate per kilogram of the athlete's body mass, but should be fine-tuned with individual consideration of total energy needs, specific training needs and feedback from training performance. It is valuable to choose nutrient-rich carbohydrate foods and to add other foods to recovery meals and snacks to provide a good source of protein and other nutrients. These nutrients may assist in other recovery processes and, in the case of protein, may promote additional glycogen recovery when carbohydrate intake is suboptimal or when frequent snacking is not possible. When the period between exercise sessions is  <8 h, the athlete should begin carbohydrate intake as soon as practical after the first workout to maximize the effective recovery time between sessions. There may be some advantages in meeting carbohydrate intake targets as a series of snacks during the early recovery phase, but during longer recovery periods (24 h) the athlete should organize the pattern and timing of carbohydrate-rich meals and snacks according to what is practical and comfortable for their individual situation. Carbohydrate-rich foods with a moderate to high glycaemic index provide a readily available source of carbohydrate for muscle glycogen synthesis, and should be the major carbohydrate choices in recovery meals. Although there is new interest in the recovery of intramuscular triglyceride stores between training sessions, there is no evidence that diets which are high in fat and restricted in carbohydrate enhance training.

Doping in sport: an economic analysis

This paper examines the impact of various regulatory policies on the decision to dope by athletes. The analysis suggests that punishment schemes involving lump-sum fines and bans, which are commonly used to control doping, create biases, and do not achieve their goal of levelling the playing field. Under plausible assumptions, these schemes are more likely to control doping for risk averse athletes compared to risk neutral ones, poorer athletes compared to their wealthier counterparts, and athletes with high earning potentials relative to those with lower potential. A marginal penalty scheme where athletes are fined based on the quantity of dope detected eliminates these biases, and emerges as a superior policy for levelling the playing field.