ObjectivesWe analysed the information on current national physical activity recommendations in all EU Member States provided by governments in a joint EU/WHO survey on the implementation status of the EU Council Recommendation on Health-Enhancing Physical Activity across Sectors.DesignCross-sectional survey.ParticipantsThe representatives of the 28 EU Member State governments to the EU Physical Activity Focal Point Network.Outcome measuresNational recommendations on: (A) minimum frequency, duration, intensity and lengths of bouts of physical activity, (B) preventing inactivity or sedentary behaviour and (C) further recommendations for additional health benefits, obesity prevention and specific types of activity.ResultsAn official document could be located for 23 of the 28 EU Member States, while four are currently developing recommendations. For children and adolescents, most countries follow the 2010 WHO Global Recommendations for Physical Activity, but there are notable differences in the delimitation of age groups. 14 countries also followed WHO in their recommendations for adults, and 11 countries have additional advice on avoiding inactivity and sitting among adults. 18 Member States have recommendations for older adults, 12 of which follow WHO. Thirteen countries also address at least one special population (eg, pregnant women, people with disabilities and people with chronic diseases), but the level of detail varies substantially between countries.ConclusionsThe large majority of EU Member States either has physical activity recommendations in place or is in the process of developing them. There is a general tendency to use the WHO Global Recommendations as a basis, with the greatest variation observable for children and adolescents. Comparing results with a previous round of data collection shows that the number of EU countries with physical activity recommendations is increasing and that both special groups and sedentary behaviour have become more important in recent years.
The present study aimed to examine how high- and low-speed swimmers organise biomechanical, energetic and coordinative factors throughout extreme intensity swim. Sixteen swimmers (eight high- and eight low-speed) performed, in free condition, 100-m front crawl at maximal intensity and 25, 50 and 75-m bouts (at same pace as the previous 100-m), and 100-m maximal front crawl on the measuring active drag system (MAD-system). A 3D dual-media optoelectronic system was used to assess speed, stroke frequency, stroke length, propelling efficiency and index of coordination (IdC), with power assessed by MAD-system and energy cost by quantifying oxygen consumption plus blood lactate. Both groups presented a similar profile in speed, power output, stroke frequency, stroke length, propelling efficiency and energy cost along the effort, while a distinct coordination profile was observed (F = 3.59, P = 0.04). Speed, power, stroke frequency and propelling efficiency (not significant, only a tendency) were higher in high-speed swimmers, while stroke length and energy cost were similar between groups. Performing at extreme intensity led better level swimmers to achieve superior speed due to higher power and propelling efficiency, with consequent ability to swim at higher stroke frequencies. This imposes specific constraints, resulting in a distinct IdC magnitude and profile between groups.
Highlights Study of trends in physical activity policy development in Europe. National physical activity policy development has advanced. Increased national policy actions in the health and education sectors. Monitoring and surveillance has expanded but needs to be standardised.
This study aimed to examine young swimmers’ behavioral flexibility when facing different task constraints, such as swimming speed and stroke frequency. Eighteen (five boys and 13 girls) 13- to 15-year-old swimmers performed a 15 × 50-m front crawl with five trials, at 100%, 90%, and 70% each of their 50 m maximal swimming speed and randomly at 90%, 95%, 100%, 105%, and 110% of their preferred stroke frequency. Seven aerial and six underwater cameras were used to assess kinematics (one cycle), with upper-limb coordination computed through a continuous relative phase and index of coordination. A cluster analysis identified six patterns of coordination used by swimmers when facing various speed and stroke frequency constraints. The patterns’ nature and the way the swimmers shifted between them are more important than getting the highest number of patterns (range of repertoire), that is, a change in the motor pattern in order to adapt correctly is more important than being able to execute a great number of patterns.
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