Text this: Validity, inter-and intra-reliability of new equipment innovation for increasing lung volume training and measuring chest expansion measurement among healthy people

  ______   _    _               _____     ______  
 /_   _// | || | ||   ____     |  ___||  /_   _// 
 `-| |,-  | || | ||  |    \\   | ||__    `-| |,-  
   | ||   | \\_/ ||  | [] ||   | ||__      | ||   
   |_||    \____//   |  __//   |_____||    |_||   
   `-`'     `---`    |_|`-`    `-----`     `-`'   
                     `-`