Caffeine Supplementation or Carbohydrate Mouth Rinse Improves Performance.

Training volume is one of the critical variables required to promote resistance training benefits (e. g., hypertrophy, muscular strength).

Airflow-Restricting Mask Reduces Acute Performance in Resistance Exercise.

Background: The aim of this study was to compare the number of repetitions to volitional failure, the blood lactate concentration, and the perceived exertion to resistance training with and without an airflow-restricting mask.

Methods: Eight participants participated in a randomized, counterbalanced, crossover study. Participants were assigned to an airflow-restricting mask group (MASK) or a control group (CONT) and completed five sets of chest presses and parallel squats until failure at 75% one-repetition-maximum test (1RM) with 60 s of rest between sets.