The report studied the league table of the distance covered by every Premier League side.
United's squad have covered only 55 kilometres in their last five games, far less than rivals Liverpool, according to the study, which was reported by The Daily Mail on Monday.
Liverpool have run the farthest in the league, a remarkable 11 km more than the second-placed Manchester City and third positioned Tottenham.
Premier League newcomers Burnley are next, just ahead of West Bromwich Albion.
But running more isn't a guarantee for results and performances in the league.
Everton, second placed in the league standings, have only run the 12th farthest, while Chelsea, in fifth, are 40 km short of Liverpool's distance and are down 14th in the study.
Winless Sunderland outfit are 19th in both the league table and the running stats.