scholarly journals Physical demands of overhead crane operation

2021 ◽  
Vol 86 ◽  
pp. 103200
Author(s):  
D. Mark Munro ◽  
Megan E. Govers ◽  
Michele L. Oliver
Author(s):  
Weihui Wang ◽  
Suquan Chao ◽  
Yunping Wei ◽  
Bigen Yang ◽  
Hui Zhao
Keyword(s):  

Author(s):  
Igor Junio de Oliveira Custódio ◽  
Gibson Moreira Praça ◽  
Leandro Vinhas de Paula ◽  
Sarah da Glória Teles Bredt ◽  
Fabio Yuzo Nakamura ◽  
...  

This study aimed to analyze the intersession reliability of global positioning system (GPS-based) distances and accelerometer-based (acceleration) variables in small-sided soccer games (SSG) with and without the offside rule, as well as compare variables between the tasks. Twenty-four high-level U-17 soccer athletes played 3 versus 3 (plus goalkeepers) SSG in two formats (with and without the offside rule). SSG were performed on eight consecutive weeks (4 weeks for each group), twice a week. The physical demands were recorded using a GPS with an embedded triaxial accelerometer. GPS-based variables (total distance, average speed, and distances covered at different speeds) and accelerometer-based variables (Player Load™, root mean square of the acceleration recorded in each movement axis, and the root mean square of resultant acceleration) were calculated. Results showed that the inclusion of the offside rule reduced the total distance covered (large effect) and the distances covered at moderate speed zones (7–12.9 km/h – moderate effect; 13–17.9 km/h – large effect). In both SSG formats, GPS-based variables presented good to excellent reliability (intraclass correlation coefficients – ICC > 0.62) and accelerometer-based variables presented excellent reliability (ICC values > 0.89). Based on the results of this study, the offside rule decreases the physical demand of 3 versus 3 SSG and the physical demands required in these SSG present high intersession reliability.


2017 ◽  
Vol 36 (5) ◽  
pp. 592-598 ◽  
Author(s):  
Live S. Luteberget ◽  
Hege P. Trollerud ◽  
Matt Spencer

Sign in / Sign up

Export Citation Format

Share Document