Hi guys, found this on ‘what constitutes walking in the Olympics’ which might help clarify things.
RULE 230 of the International Association of Athletics Federations (IAAF) rulebook is not common knowledge to most fans watching the Olympics, but it is likely to be among the most frequently invoked regulation of this Olympiad. Paragraph two of the laws of race walking define the sport as “a progression of steps so taken that the walker makes contact with the ground, so that no visible (to the human eye) loss of contact occurs”. But try walking at any pace and you quickly realise that keeping one foot in touch with the ground is easier said than done. Competitors who break this rule are first cautioned, then eventually disqualified if they repeatedly infringe it. The problem is that humans are fallible; our eyesight can fail us. One 2013 study found that judges in controlled conditions only picked up 57% of all illegal steps made.
Also … ” the athlete’s back toe cannot leave the ground until the heel of the front foot has touched. Violation of this rule is known as loss of contact.”