Describir: Gender differences in exerted forces and physiological load during pushing and pulling of wheeled cages by postal workers

 _    _    _    _    _____     _    _    _    _     _____     ______  
| || | || | || | || |  __ \\  | || | || | \  / ||  |  ___||  /_____// 
| || | || | || | || | |  \ || | || | || |  \/  ||  | ||__    `____ `  
| \\_/ || | \\_/ || | |__/ || | \\_/ || | .  . ||  | ||__    /___//   
 \____//   \____//  |_____//   \____//  |_|\/|_||  |_____||  `__ `    
  `---`     `---`    -----`     `---`   `-`  `-`   `-----`   /_//     
                                                             `-`      
   ___    
  / _ \\  
 / //\ \\ 
|  ___  ||
|_||  |_||
`-`   `-`