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

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