How ants walking backward find their way home

Science ◽  
2019 ◽  
Author(s):  
Eva Frederick
Keyword(s):  
Walking Backward

ELECTROMYOGRAPHIC ANALYSIS OF WALKING BACKWARD IN WATER

2003 ◽  
Vol 35 (Supplement 1) ◽  
pp. S243
Author(s):  
K Masumoto ◽  
S Takasugi ◽  
N Hotta ◽  
K Fujishima ◽  
Y Iwamoto
Keyword(s):  
Electromyographic Analysis ◽  
Walking Backward

scholarly journals Do Children Accurately Estimate Their Performance of Fundamental Movement Skills?

2017 ◽  
Vol 5 (2) ◽  
pp. 193-206 ◽  
Author(s):  
Gabriela Almeida ◽  
Carlos Luz ◽  
Rui Martins ◽  
Rita Cordovil
Keyword(s):  
Physical Education ◽  
Physical Activities ◽  
Motor Competence ◽  
Balance Beam ◽  
Actual Performance ◽  
Movement Skills ◽  
Fundamental Movement Skills ◽  
The Relationship ◽  
Different Levels ◽  
Walking Backward

An inaccurate perception of motor competence might compromise the engagement of children in physical activities and might be a problem in terms of safety in physical education classes or at playgrounds. The relationship between estimation and actual performance in children with different levels of performance in fundamental movement skills (FMS) was analyzed. Three hundred and three children (aged 6–10 years) were ranked according to their performance in FMS tasks: jumping, kicking, throwing, and walking backward (WB) on a balance beam. Tertiles were created for each task according to children’s performance. Before performing the tasks, children estimated their maximum performance. Absolute percent errors (i.e., deviation percentage from accurate estimations) and error tendency (i.e., frequency of underestimations, right judgments, or overestimations) were calculated. All performance groups tended to overestimate their skills at all tasks, except for the upper tertile group at the WB task (underestimation tendency). After controlling for age, children in the lower tertiles were consistently less accurate than children in the upper tertiles, exhibiting greater absolute percent errors for all the tasks. The overestimation tendency that was found might positively influence children’s engagement in physical activities, but unrealistic estimations might be a problem in terms of safety.

scholarly journals Wearing Acceptability of Chemical Protective Clothing during Fire Training

2020 ◽  
Vol 34 (3) ◽  
pp. 110-115
Author(s):  
Changhoon Bang ◽  
Jungsuk Kwan
Keyword(s):  
Protective Clothing ◽  
Basic Data ◽  
Heavy Object ◽  
Dynamic Movement ◽  
Chemical Protective Clothing ◽  
Walking Backward

The aim of this study was to investigate the wearing acceptability of chemical protective clothing during fires and to provide basic data for the safety of firefighters. The results of the study were as follows: Wearer acceptabilities of chemical protective clothing under static movement (e.g., looking at the ceiling with maximum head bending, wrapping one’s arms around oneself, sitting obliquely on the floor, and maintaining a crouching position) were 21.7%–47.8% lower than those of general uniforms. When wearing chemical protective suits, the acceptability under static movement was statistically low (p < .001). Wearer acceptabilities of chemical protective clothing under dynamic movement (e.g., running, lifting a heavy object (20 kg) up to the waist, lifting and moving a heavy object (20 kg) by 1 m, lifting a stretcher and walking forward, and lifting a stretcher and walking backward) were 19.2%–47.8% lower than those of general uniforms. When wearing chemical protective suits, the acceptability under dynamic movement was also statistically low (p < .001).

scholarly journals Effect of biological maturation on gross motor coordination in boys: a mediation analysis

2020 ◽  
Vol 33 ◽  
Author(s):  
Douglas Henrique Bezerra-Santos ◽  
Leonardo Gomes de Oliveira Luz ◽  
Braulio Patrick da Silva-Lima ◽  
Ingrid Kelly Alves dos Santos-Pinheiro ◽  
Arnaldo Tenório da Cunha-Júnior ◽  
...  
Keyword(s):  
Physical Activity ◽  
Motor Coordination ◽  
Peak Height ◽  
Early Years ◽  
Height Velocity ◽  
Peak Height Velocity ◽  
Gross Motor ◽  
Sitting Height ◽  
Biological Maturation ◽  
Walking Backward

Abstract Introduction: The literature emphasizes the importance of acquiring good motor coordination in the early years of life and its relationship with physical fitness and physical activity during adolescence and adulthood. Objective: To analyze the effect of biological maturation on the motor coordination in boys. Method: The sample was composed by 203 boys between 11 and 14 years old. Height, body mass, sitting height, waist circumference (WC) and skinfolds were measured. Somatic maturation (SM) was assessed by maturity offset (estimated age at peak height velocity). The gross motor coordination was evaluated by Körperkoordinationstest für Kinder (KTK) battery. Results: The SM exerted an effect on the walking backward on balance beams (WB) mediated by the WC. Conclusion: The results showed that the performance of boys in the WB was negatively influenced by the greater volume of fat in the trunk related to a more advanced state of SM.

Walking Backward (review)

2009 ◽  
Vol 63 (3) ◽  
pp. 101-101
Author(s):  
Deborah Stevenson
Keyword(s):  
Walking Backward
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