In the February 2017 issue we showcase a range of reports in the Sport and Exercise Science section. Inness, Billaut and Aughey examine the thresholds to effectiveness of live high train low adaptation, providing a recommended minimum number of days to see an effect. Conviser and colleagues outline whether or not β-adrenergic blockade is retained during resistance exercise. Veltmeijer’s group explore the relationship between core body temperature levels and pro-thrombotic change to evaluate if increased core body temperature might change the risk of clotting. Seeger and co-workers report on work evaluating whether delayed ischaemic preconditioning is as effective as acute ischaemic preconditioning on 5 km run times. In our final paper in the section, Bessem, de Bruijn and Nieuwland outline gender based differences in the ECG in young athletes that need to be considered in screening protocols.