Different types of compression clothing do not increase sub-maximal and maximal endurance performance in well-trained athletes

Abstract

Three textiles with increasing compressive surface were compared with non-compressive conventional clothing on physiological and perceptual variables during sub-maximal and maximal running. Fifteen well-trained endurance athletes (mean ± s: age 27.1 ± 4.8 years, [Vdot]O_2max 63.7 ± 4.9 ml · min^?1 · kg^?1) performed four sub-maximal (～70%[Vdot]O_2max) and maximal tests with and without different compression stockings, tights, and whole-body compression suits. Arterial lactate concentration, oxygen saturation and partial pressure, pH, oxygen uptake, and ratings of muscle soreness were recorded before, during, and after all tests. In addition, we assessed time to exhaustion. Sub-maximal (P = 0.22) and maximal oxygen uptake (P = 0.26), arterial lactate concentration (P = 0.16; 0.20), pH (P = 0.23; 0.46), oxygen saturation (P = 0.13; 0.26), and oxygen partial pressure (P = 0.09; 0.20) did not differ between the types of clothing (effect sizes = 0.00–0.45). Ratings of perceived exertion (P = 0.10; 0.15), muscle soreness (P = 0.09; 0.10) and time to exhaustion (P = 0.16) were also unaffected by the different clothing (effect sizes = 0.28–0.85). This was the first study to evaluate the effect on endurance performance of different types of compression clothing with increasing amounts of compressive surface. Overall, there were no performance benefits when using the compression garments.     

Energy turnover during 24 hours and 6 days of adventure racing

Abstract

Energy turnover was assessed in two conditions of mixed ultra-endurance exercise. In Study 1, energy expenditure and intake were measured in nine males in a laboratory over 24 h. In Study 2, energy expenditure was assessed in six males during an 800-km Adventure race (mean race time 152.5 h). Individual correlations between heart rate and oxygen uptake ([Vdot]O₂) were established during pre-tests when kayaking, cycling, and running. During exercise, energy expenditure was estimated from continuous heart rate recordings. Heart rate and [Vdot]O₂ were measured regularly during fixed cycling work rates to correct energy expenditure for drift in oxygen pulse. Mean energy expenditure was 18,050 ± 2,390 kcal (750 ± 100 kcal · h^?1) and 80,000 ± 18,000 kcal (500 ± 100 kcal · h^?1) in Study 1 and Study 2 respectively, which is higher than previously reported. Energy intake in Study 1 was 8,450 ± 1,160 kcal, resulting in an energy deficit of 9,590 ± 770 kcal. Body mass decreased in Study 1 (?2.3 ± 0.8 kg) but was unchanged in Study 2. Fat mass decreased in Study 2 (?2.3 ± 1.5 kg). In Study 1, muscle glycogen content decreased by only 60%. Adventure racing requires a high energy expenditure, with large inter-individual variation. A large energy deficit is caused by inadequate energy intake, possibly due to suppressed appetite and gastrointestinal problems. The oxygen pulse, comparing start to 12 h of exercise and beyond, increased by 10% and 5% in Study 1 and Study 2 respectively. Hence, estimations of energy expenditure from heart rate recordings should be corrected according to this drift.     

Physical fitness of primary school children in relation to overweight prevalence and physical activity habits

Abstract

A cross-sectional study was carried out to analyse, through a limited number of fitness tests, the main conditioning and coordinative abilities in children aged 8–9 years, and their relationship with gender, anthropometric variables and physical activity habits. The height and weight of 256 boys and 241 girls were measured and information about physical activity habits was collected using a self-administered questionnaire. Physical performance was assessed by means of a few standardised tests: ‘sit & reach’, medicine-ball forward throw, standing long jump, 20 m running speed, and forward roll test. In both boys and girls, body weight and Body Mass Index (BMI) were positively correlated with the medicine-ball throw performances and negatively correlated for the standing long jump and speed tests, while no association was found with tests measuring back flexibility and total body coordination. Daily physical activity and participation in sport were not significantly correlated with body weight and BMI, but were positively associated with children's motor performance. The standardised fitness tests selected in the current study have been found to be suitable to identify fitness levels of primary school children. Thanks to their limited number and ease of measurement, they can be used in any school context to classify children and for monitoring the effects of targeted interventions promoting physical activity.     

‘Too Semitic’ or ‘Thoroughly ‘Anglicised’? The Life and Career of Harold Abrahams

Harold Maurice Abrahams (1899–1978) – the British-Jewish athlete made famous by the film Chariots of Fire – won gold for Britain in the 100 m sprint in the 1924 Paris Olympics. Far from being the ‘outsider’ depicted in Chariots of Fire, however, Abrahams’ ‘Anglicisation’ was extensive and played an important role in his life before, during and after his athletics career. Abrahams’ integration went hand-in-hand with his sporting success – something which was celebrated by British Jewry. Such was his assimilation, that by 1936 – a year when Abrahams courted controversy over his stance on the Berlin Olympics – he was criticised for having ‘lost’ all attachment to the community of his birth. In contrast to the film, where Abrahams is seen to be ‘too Semitic’, the Bedford athlete was actually ‘thoroughly Anglicised’. A desire to move into or support middle-to-upper class British society characterised Abrahams’ personal and sporting life much more so than his Jewishness. As time progressed, Abrahams’ Jewish origins meant less and less, both to Harold himself and to those around him.     

The Birth of the Sports Press in Spain Within the Regenerationist Context of the Late Nineteenth Century

This study tackles the birth and development of the sports press in Spain from 1865 to 1899, linked to the need of a bourgeois society to emulate the English lifestyle, characterised by the sports craze. The sports press in Spain fitted extremely well in the late nineteenth century, encouraged by the Regenerationist movement. This is clear by the growth in number of sports publications, by the promotion of physical culture by Regenerationism and by the use of such publications to spread Regenerationism's approach to sport. Both primary and secondary sources were used in the research process. With regard to primary sources, archives containing specific documentation on the origins and early years of the sports press in Spain were examined. A total of 85 sports publications were counted in 18 different towns, but mostly concentrated in Madrid (28) and Barcelona (24). The most widely represented sports in these were cycling (25) and hunting (18). Among those publications that were not specific to one sport, 13 titles included the English-language term ‘sport’, and only two incorporated the newly coined Spanish word, ‘deporte’. Los Deportes (1897–1910) is the most important publication of this period and the foundation stone of modern sports journalism in Spain.     

Skiing accidents in the past 15 years

For the last 15 years a statistical analysis of distances skied and of alpine skiing accidents has been performed in the Davos‐Klosters skiing area, a ‘closed’ skiing area, where every skier has to return from the top to the bottom station. Distance skied is measured by vertical drop in 10⁶ km determined by calculations from frequency surveys by lift‐operators. About 2.5 million km per season have been skied during the past years, a number remaining constant for the last 15 years. In the same time the requirement for rescue‐transports in this area has shown a decline of 46% to 288 transports per season due to a decrease of the number of injuries with initial immobilization. Therefore the so‐called transport‐quotient (one rescue‐transport per 10⁴ km of vertical drop skied) has decreased from its initial value of 4 to 1 per 10⁴ km. During the same time all winter sport injuries were analysed at the hospital of Davos. About 90% are injuries caused by alpine skiing resulting in a total of 17 246 alpine skiing injuries for the last 15 years. There is a great decline in the incidence of lower leg fractures with a contrary development of knee injuries. Today half of the lower leg injuries are knee injuries (280 knee injuries out of a total of 1250 alpine skiing accidents per season). There is a gradual increase of upper extremity injuries from 17% of all skiing injuries in 1972 to 35% in 1976. A Swiss multicentre study on skiing safety shows comparable injury patterns in other skiing areas. The average injury‐severity measured by several parameters is declining.

In a technical investigation of skiing equipment of 1072 persons who sustained an accident, only 32% had ski bindings with tolerable frontal release and 17% with tolerable torsional release. Parallel measurements of bindings of 600 non‐injured skiers gave the same alarming results. More research on the correlation between binding adjustment and knee injuries is needed.     

Aspects of traumatology in ice hockey

Ice hockey is the fastest team game played and is also considered to be one of the roughest of all sports, with a high injury incidence. Injuries and their causes were recorded by the questioning of players in the first league of the Federal Republic of Germany. Eighty‐eight out of a total of 207 first league players were included in this study. Head injuries were found to occur most frequently: however, lesions of the shoulders and of the upper and lower extremities had a more detrimental effect. The links between causes and mechanisms of the different kinds of injuries make it clear that a marked tightening of the rules and an improvement in protective clothing would serve to reduce the incidence of injuries in ice hockey.     

Sport and the sociologist 1890–1914

This essay is a response to Paul Ward’s piece ‘Last Man Picked. Do Mainstream Historians Need to Play with Sports Historians?’ (The International Journal of the History of Sport (2012), doi:10.1080/09523367.2012.726617). While Ward admits that his work is a polemic and is inspired largely by events in his youth, this response nevertheless questions the decision to critique an entire sub-discipline based on childhood experiences. Ward’s criticisms, however, are also practice-based, and this response also critically examines the lack of fresh evidence to support Ward’s claims regarding sports history’s existence outwith mainstream historical academia, and its supposed privileged place within the wider world of leisure history. The author makes that case that not only does sports history to take part in a wider historical dialogue, but must necessarily look to engage with sports studies practitioners. Finally, in the face of Ward’s criticisms, this essay reiterates what makes sport a vital subject for historians, in regional, national and international contexts.     

Recent Developments in Measurement and Possible Applications to the Measurement of Psychomotor Behavior

Abstract

Elementary physical education instructors and movement development clinicians frequently employ movement observation as their primary assessment strategy. The purpose of this study was to determine the minimal conditions of observation needed to obtain generalizable results across observers, trials, and subjects for the hop, jump, and run. The developmental sequences developed at Michigan State University were used as the observation system. Twelve children in the age range of 33–111 months were rated on five trials by 15 observers. The sample consisted of an equal number of males and females and did not involve children with handicapping conditions. The results suggest that when observers receive 1 hour of training for each skill, one observer and three trials are needed for evaluating the hop (.88), while three observers and three trials are required for the jump (.83). None of the nine measurement conditions resulted in acceptable (.80) generalizability for the run.