exercise physiology – Seite 4

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Influence of performance capacity on perceived effort

This study aimed to investigate the relationship between the ability to perceive an Exertion quantified through BORG-Scale (6-20) and endurance level. Therefore 16 females and 28 males completed a lactate performance diagnostic as well as a 5000 meter course. Subjective Perception of effort was quantified according to BORG Scale (6-20). Participants were sex-divided and grouped in well endurance trained participants and not endurance trained participants. The analysis showed no clear differences between the two groups. Generally, lactate showed a closer correlative relationship with subjective perceived exertion than heart rate.

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Caffein bars pre time trial improve performance and reduce perceived effort

The intake of caffeine from tablets, coffee and energy drinks has shown to benefit endurance performance, whereas the effect of caffeine bars has not been investigated yet. Therefore, the aim of the study was to examine endurance performance, metabolism and perceived exertion following the co-ingestion of caffeine and carbohydrates in the form of bars.

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Influence of vigorous interval training and adaptation of brain cortical activity

Due to methodological and technical challenges brain cortical activity has rarely been investigated during endurance exercise. In this respect, it is not surprising that effects of an acute bout of interval training on central nervous activity have not been examined yet. Therefore, the aim of the present investigation was to characterize acute adaptations of brain cortical activity and established parameters to a high intensity endurance session. In a laboratory study sixteen endurance-trained cyclists completed an exercise bout including 3 interval series on a high-performance bicycle ergometer. Changes in cortical activity were recorded with quantitative electroencephalography (EEG) and analyzed in five specific frequency ranges (theta, alpha-1, alpha-2, beta-1, beta-2).

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Mountain vs city marathon: a discussion around the concept of effort and kilometers

The aim of this study was to investigate differences in course times of a mountainmarathon (Napfmarathon) versus a city Marathon. Therefore all participants of Napfmarathon were screened concerning a double participation on a city marathon (Zürich, Winterthur, Lausanne, Luzern) and the course time were compared. Of key interest was the influence of ascents and descents which were quantified according to guidelines of Youth & Sport (Jugend + Sport / Jeunesse et Sport), whereby in first approximation 100 meter of ascent, 150 meter of descent (more than 20%) and 1 km of horizontal distance were taken as a simallar performance correlat.

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Strength training and ageing: background, goals and implementation

In recent decades, increasingly greying societies have been noticed in industrialized nations. The rise in medical care necessary to manage the health of this aging population will ensue huge financial burdens on the healthcare system. The increase of age-specific diseases, compounded by declines in neuromuscular performance constitute two key reasons for a rise in the medical care of older people. Current scientific knowledge reveals that a consequence of aging is the loss of muscle mass and thus, a decrease in maximum and explosive strength.

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The elderly athlete in the sports medicine consultation

Senior sportsmen and -women still participate in great numbers in sport events, particularly in endurance sports. Among the participants of the Jungfrau Marathon 2014 were 43% of the 3046 runners older than 50 years. These persons beeing active in sports have age related sportmedical problems. With four case reports the article tries to give concrete propositions to the sportsmed physician. Some of the graphics and tables are particularly appropriate for the counselling of active seniors in sports.

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The heart of master athletes: benefits and risks

Regular physical activity (PA) is a cornerstone of good health in the ageing population. Cardiorespiratory fitness is an important surrogate marker for survival. In primary cardiovascular disease prevention, PA is considered an effective monotherapy with beneficial effects on the cardiovascular risk profile (e.g. lipid profile, blood pressure, diabetes mellitus, body composition) and endothelial function. In secondary prevention, PA is an addition to, rather than a replacement for evidence-based medication.

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Validation of an electronic jumping ability measurement device for handball specific jumps

The aim of this study was to examine the validity of the electronic jump measurement system Training TesterTM to measure team handball specific jump performance. For this reason, standing reach height and team handball jump specific reach height were determined simultaneously with the Training TesterTM and a motion capture system as criterion measure. The Training TesterTM slightly underestimated the variables of interest. This can be explained by the relative small measuring zone of the Training TesterTM in comparison to the motion capture system. However, the correlation coefficients between both measurement methods were found to be very high.

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E-Sports – Comparison of training intensity in two commercial gaming consoles with classical ergometer training

There is a substantial lack of research comparing the effects of game console-based activities against conventional activities (aerobic, bicycle ergometer) within therapeutic and rehabilitative settings and the results are inconsistent. The aim of the study was to investigate if training with exergames (Nintendo Wii vs. Xbox 360) compared with conventional activities (bicycle ergometer) would have different effects on physiological and psychological parameters. Method: A quantitative three-armed, randomised, not-blinded study design was used. The test persons were randomly assigned to one of three activities: 1) Bicycle ergometer (n = 6); 2. Nintendo Wii game (n = 16); 3. Xbox 360 game (n = 17).

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Correlation between RPE and blood lactate concentration in resistance training

Quantifying actual individual training intensity in resistance training is essential for athletes and trainers, but is at present only possible with methodological problems. Thus, the purpose of this article is to examine the relationship of different types of RPE (rating of perceived exertion) with blood lactate concentrations in hypertrophy training. Hereby it is possible, to deduce conclusions about the validity of the RPE-scale and different times of monitoring. In this article two studies with male subjects are presented (study 1: n=10, 23.7 ± 2.8 years; study 2: n=16, 24.9 ± 2.0 years). In both surveys, subjects had to complete 3 sets with 3 minutes of rest between sets in every exercise. Blood lactate was measured before each exercise and two minutes after the completion of each set.