English to Spanish Medical Medical (general)

hola! es una traduccion de un manual de quiropractica y no encuentro a que se refiere cuando dice : hesitation. el contexto es:
"Gently move his leg into abduction. Move slowly so that you may feel any hesitation or tightness in the range of motion. when you feel any hesitation or tightness, stop, back up a few degrees and hold until a release occurs"

muchas gracias!!!