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Kara K. Palmer, Matthew W. Miller and Leah E. Robinson

A growing body of research has illuminated beneficial effects of a single bout of physical activity (i.e., acute exercise) on cognitive function in school-age children. However, the influence of acute exercise on preschoolers’ cognitive function has not been reported. To address this shortcoming, the current study examined the effects of a 30-min bout of exercise on preschoolers’ cognitive function. Preschoolers’ cognitive function was assessed following a single bout of exercise and a single sedentary period. Results revealed that, after engaging in a bout of exercise, preschoolers exhibited markedly better ability to sustain attention, relative to after being sedentary (p = .006, partial eta square = .400). Based on these findings, providing exercise opportunities appears to enhance preschoolers’ cognitive function.

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Renate M. Leithäuser, Dieter Böning, Matthias Hütler and Ralph Beneke

Relatively long-lasting metabolic alkalizing procedures such as bicarbonate ingestion have potential for improving performance in long-sprint to middle-distance events. Within a few minutes, hyperventilation can induce respiratory alkalosis. However, corresponding performance effects are missing or equivocal at best.

Purpose:

To test a potential performance-enhancing effect of respiratory alkalosis in a 30-s Wingate Anaerobic Test (WAnT).

Methods:

10 men (mean ± SD age 26.6 ± 4.9 y, height 184.4 ± 6.1 cm, body-mass test 1 80.7 ± 7.7 kg, body-mass test 2 80.4 ± 7.2 kg, peak oxygen uptake 3.95 ± 0.43 L/min) performed 2 WAnTs, 1 with and 1 without a standardized 15-min hyperventilation program pre-WAnT in randomized order separated by 1 wk.

Results:

Compared with the control condition, hyperventilation reduced (all P < .01) pCO2 (40.5 ± 2.8 vs 22.5 ± 1.6 mm Hg) and HCO3 (25.5 ± 1.7 vs 22.7 ± 1.6 mmol/L) and increased (all P < .01) pH (7.41 ± 0.01 vs 7.61 ± 0.03) and actual base excess (1.4 ± 1.4 vs 3.2 ± 1.6 mmol/L) pre-WAnT with an ergogenic effect on WAnT average power (681 ± 41 vs 714 ± 44 W) and total metabolic energy (138 ± 12 vs. 144 ± 13 kJ) based on an increase in glycolytic energy (81 ± 13 vs 88 ± 13 kJ).

Conclusion:

Hyperventilation-induced respiratory alkalosis can enhance WAnT cycling sprint performance well in the magnitude of what is seen after successful bicarbonate ingestion.

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Suzete Chiviacowsky and Helena Thofehrn Lessa

Granting learners autonomy over certain aspects of the practice context—for example, by providing them with the opportunity to choose when to receive augmented feedback or observe a model—has been consistently shown to facilitate the acquisition of motor skills in several populations. However, studies investigating the provision of autonomy support to older adults remain scarce. The purpose of the present experiment was to investigate the effects of providing choice over feedback on motor learning in older adults. Participants were divided into two groups, choice and no-choice, and practiced 36 trials of a linear positioning task. Before each block of six trials, participants from the choice group were given the choice to control, or not, when to receive feedback in the block. No-choice group participants received feedback according to the same schedule as their choice group counterparts, but they could not choose when to receive it. Two days later, participants of both groups performed retention and transfer tests. The choice group demonstrated lower absolute error scores during transfer compared with the no-choice group. The findings reinforce outcomes of previous autonomy support studies and provide the first evidence that choice over feedback can enhance the learning of motor skills in older adults.

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Courtney J. McGowan, David B. Pyne, Kevin G. Thompson, John S. Raglin and Ben Rattray

Context:

An exercise bout completed several hours prior to an event may improve competitive performance later that same day.

Purpose:

To examine the influence of morning exercise on afternoon sprint-swimming performance.

Methods:

Thirteen competitive swimmers (7 male, mean age 19 ± 3 y; 6 female, mean age 17 ± 3 y) completed a morning session of 1200 m of variedintensity swimming (SwimOnly), a combination of varied-intensity swimming and a resistance-exercise routine (SwimDry), or no morning exercise (NoEx). After a 6-h break, swimmers completed a 100-m time trial.

Results:

Time-trial performance was faster in SwimOnly (1.6% ± 0.6, mean ± 90% confidence limit, P < .01) and SwimDry (1.7% ± 0.7%, P < .01) than in NoEx. Split times for the 25- to 50-m distance were faster in both SwimOnly (1.7% ± 1.2%, P = .02) and SwimDry (1.5% ± 0.8%, P = .01) than in NoEx. The first 50-m stroke rate was higher in SwimOnly (0.70 ± 0.21 Hz, mean ± SD, P = .03) and SwimDry (0.69 ± 0.18 Hz, P = .05) than in NoEx (0.64 ± 0.16 Hz). Before the afternoon session, core (0.2°C ± 0.1°C [mean ± 90% confidence limit], P = .04), body (0.2°C ± 0.1°C, P = .02), and skin temperatures (0.3°C ± 0.3°C, P = .02) were higher in SwimDry than in NoEx.

Conclusions:

Completion of a morning swimming session alone or together with resistance exercise can substantially enhance sprint-swimming performance completed later the same day.

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Thomas Paulson and Victoria Goosey-Tolfrey

Despite the growing interest in Paralympic sport, the evidence base for supporting elite wheelchair sport performance remains in its infancy when compared with able-bodied (AB) sport. Subsequently, current practice is often based on theory adapted from AB guidelines, with a heavy reliance on anecdotal evidence and practitioner experience. Many principles in training prescription and performance monitoring with wheelchair athletes are directly transferable from AB practice, including the periodization and tapering of athlete loads around competition, yet considerations for the physiological consequences of an athlete’s impairment and the interface between athlete and equipment are vital when targeting interventions to optimize in-competition performance. Researchers and practitioners are faced with the challenge of identifying and implementing reliable protocols that detect small but meaningful changes in impairment-specific physical capacities and on-court performance. Technologies to profile both linear and rotational on-court performance are an essential component of sport-science support to understand sport-specific movement profiles and prescribe training intensities. In addition, an individualized approach to the prescription of athlete training and optimization of the “wheelchair–user interface” is required, accounting for an athlete’s anthropometrics, sports classification, and positional role on court. In addition to enhancing physical capacities, interventions must focus on the integration of the athlete and his or her equipment, as well as techniques for limiting environmental influence on performance. Taken together, the optimization of wheelchair sport performance requires a multidisciplinary approach based on the individual requirements of each athlete.

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Jamie B. Barker, Marc V. Jones and Iain Greenlees

High levels of self-efficacy have been documented to be associated with optimal levels of sport performance. One technique, which has the potential to foster increased self-efficacy, is hypnosis. Hypnosis is based upon the power of suggestion and, while often shrouded in myth and controversy, has been used in a number of domains including medicine, dentistry, and psychotherapy. In contrast, sport psychology is one domain where the use of hypnosis has yet to be fully explored. The aim of this review is to add to the extant literature and delineate how hypnosis potentially can enhance self-efficacy. By drawing on neodissociation and nonstate theories of hypnosis, a combined theoretical basis is established to explain how hypnosis may be used to influence sport performers’ sources of self-efficacy information. Furthermore, the review examines these theoretical postulations by presenting contemporary research evidence exploring the effects of hypnosis on sport performers’ self-efficacy. The review concludes with future research directions and suggestions for sport psychologists considering the use of hypnosis within their practice.

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Shona L. Halson, Alan G. Hahn and Aaron J. Coutts

methods used are exposed to the peer-review process and enhances accountability of the individuals collecting the data. Feedback from peers can lead to insights that would never have emerged if the data were kept entirely in-house. Although all these points may be valid, the argument for publishing can

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Daya Alexander Grant

the present moment, and second, to do so without judgment. Mindful Sport Performance Enhancement provides an application of those principles to sport, with its primary offering being the Mindful Sport Performance Enhancement (MSPE) program. The book’s core are the six sessions of the MSPE program

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Jonathan Rhodes, Jon May, Jackie Andrade and David Kavanagh

“that creates a context where people are encouraged to consider the utility and possibility of functional behaviour change” (p. 259). FIT pairs the spirit of motivational interviewing (MI; Miller & Rollnick, 2012 ) with a focus on enhancing the concreteness and vividness of an individual’s goal

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Stephen A. Mears, Kathryn Dickinson, Kurt Bergin-Taylor, Reagan Dee, Jack Kay and Lewis J. James

minutes, there appears to be little evidence, if any, to suggest preexercise carbohydrate ingestion will enhance performance. It is generally perceived that muscle glycogen depletion is not the limiting factor for short-duration exercise, and therefore, prior ingestion of carbohydrate will serve little