The interplay between internal and external load parameters during different strength training sessions in resistance-trained men

• Published in: European journal of sport science 2021-01, Vol.21 (1), p.16-25
• Main Authors: Martorelli, André S., De Lima, Filipe D., Vieira, Amilton, Tufano, James J., Ernesto, Carlos, Boullosa, Daniel, Bottaro, Martim
• Format: Article
• Language: English
• Subjects: Adult; Analysis of Variance; Biomarkers - blood; Creatine Kinase - blood; Humans; Hydrocortisone - blood; Hypertrophy; Immunoglobulin A - blood; Internal load; Lactic Acid - blood; Male; Muscle Development - physiology; muscle hypertrophy; Muscle Strength - physiology; muscular power; muscular strength; perceptual responses; Physical Exertion - physiology; repetitions-to-failure; resistance training; Resistance Training - methods; Weight Lifting - physiology; Young Adult
• ISSN: 1746-1391; 1536-7290
• DOI: 10.1080/17461391.2020.1725646

External load influences internal load in resistance training (RT). The purpose of the present study was to compare the total volume-load, perceptual and stress responses during three different RT protocols. Twelve resistance-trained men completed three different RT protocols with the back squat and bench press exercises: (1) power (POW) (5 sets of 6 repetitions at 50%1RM, 2-min of rest), (2) hypertrophy (HYP) (5 sets-to-failure at 75%1RM, 2-min of rest), and (3) strength (STR) (5 sets-to-failure at 90%1RM, 3-min of rest). Volume-load (kg × reps.), session rating of perceived exertion (sRPE), training impulse (TRIMP; reps. × sRPE), cortisol, immunoglobulin A (IgA), lactate, and creatine kinase (CK) were assessed before and/or after the sessions. HYP was the most demanding session in terms of volume-load (p