A Long Island personal trainer who helped a police officer lose nearly half his body weight for a TV show has been sentenced to seven years in prison for child abuse.

Anthony Badalamenti of Glen Cove was convicted last June of assault, child endangerment and weapons charges. Prosecutors say Badalamenti, who is 31, repeatedly beat his girlfriend's 6-year-old son with weightlifting belts. The boy was treated for lacerations and bruises.

Badalamenti's girlfriend, 30-year-old Jessica Muniz, pleaded guilty last week to the same charges in Nassau County Court and was sentenced to two years.

A spokesman for Nassau DA Kathleen Rice says Badalamenti's workout regimen helped a Long Island police officer drop 186 pounds during Season 4 of NBC's reality show ``The Biggest Loser.''