Fitness Moderates Glycemic Responses to Sitting and Light Activity Breaks.

Purpose: This study aimed to experimentally determine whether cardiorespiratory fitness (CRF) modifies postprandial glycemia during prolonged sitting and investigated the potentially blunting influence this may have on the benefits of interrupting postprandial sitting time with light activity breaks.

Methods: Thirty-four adults (18 women; 16 men; mean ± SD age, 40 ± 9 yr, body mass index, 24.5 ± 3 kg·m) undertook two 7.