Single cycles of hopping and climbing were investigated in Japanese Pygmy Woodpeckers Picoides kizuki using motion analyses on video. Body movements on substrate angled from 0-90 degrees were compared for every 10 degrees. The body was inclined forward during stance phase for both small and large substrate angles, and the inclination amplitude increased when the substrate angle increased. The tail was bent ventrally almost simultaneously to this body inclination, and its amplitude was apparently high at large substrate angles. Most of the gait parameters changed when the stride length increased. The minimum body-tail angle and most of the parameters representing body movements during stance phase changed when the substrate angle increased, probably because gravity pulled the birds further backward when they were moving on a steeper slope. These parameters showed a clear difference between the data on substrate steeper than 40 degrees and lower than 30 degrees. The abrupt changes in these parameters most likely mean that the motor pattern changed from hopping to climbing between these angles.
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http://dx.doi.org/10.1016/j.cbpa.2006.06.048 | DOI Listing |
Front Sports Act Living
December 2024
Department of Neuromedicine and Movement Science, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway.
Introduction: Physical fitness is associated with health-related quality of life, especially among youth. Although schools play an important role in promoting children's physical activity, in Italy the lack of qualified physical education teachers in primary schools may be compromising children's achievement of recommended levels of physical activity.
Methods: To test that possibility, we measured the physical fitness of 170 children (i.
Children (Basel)
September 2024
Department of Sport, Exercise and Rehabilitation Sciences, School of Psychology and Life Sciences, Canterbury Christ Church University, Canterbury CT1 1QU, UK.
This study investigated how tailored motor competency (MC) interventions within a bespoke Scheme of Work (SOW) can support young children's physical development (PD) by enhancing fine motor skills (FMS) and gross motor skills (GMS). The objective was to enable children to meet curriculum developmental physical milestones. The longitudinal case study design was conducted over 19 weeks across three academic terms and focused on 25 children (12 boys and 13 girls aged between 5 and 6 years old).
View Article and Find Full Text PDFFront Physiol
January 2024
Faculty of Kinesiology, University of Zagreb, Zagreb, Croatia.
The aim of this study was to evaluate the effects of a 16-week school-based physical activity (PA) intervention on physical fitness (PF) (speed, hand-eye coordination, flexibility) of 8- to 9-year-olds. A total of seventy-eight boys and girls (boys: = 45, aged 8.4 ± 4.
View Article and Find Full Text PDFActa Pharm Sin B
November 2023
State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
Dopamine D receptor (DR) is implicated in multiple psychotic symptoms. Increasing the DR selectivity over dopamine D receptor (DR) would facilitate the antipsychotic treatments. Herein, novel carbazole and tetrahydro-carboline derivatives were reported as DR selective ligands.
View Article and Find Full Text PDFAdv Sci (Weinh)
July 2023
Textile Engineering, Chemistry and Science, Wilson College of Textiles, North Carolina State University, Raleigh, NC, 27695, USA.
Cheetahs achieve high-speed movement and unique athletic gaits through the contraction and expansion of their limbs during the gallop. However, few soft robots can mimic their gaits and achieve the same speed of movement. Inspired by the motion gait of cheetahs, here the resonance of double spiral structure for amplified motion performance and environmental adaptability in a soft-bodied hopping micro-robot is exploited.
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