Ratamess, Nicholas A.; Kang, Jie; Porfido, Tara M.; Ismaili, Craig; Selamie,
Soraya; Williams, Briana; Kuper, Jeremy D.; Bush, Jill A.; Faigenbaum, Avery D.
The purpose of the
present study was to examine acute resistance exercise (RE) performance
following four different aerobic endurance (AE) protocols. Eleven
healthy, resistance-trained men (21.0 +/- 1.2 yrs) performed
a control RE protocol and four RE protocols 10 min following different
AE protocols in random sequence. The RE protocol consisted of 5
exercises (high pull, squat, bench press, deadlift, and push press)
performed for 3 sets of 6-10 repetitions with 70-80% of
one repetition-maximum (1RM) with 3-min rest intervals in between sets.
The AE protocols consisted of treadmill running at velocities
corresponding to: 1) 60% of their VO2 reserve (VO2R) for 45 min (P1); 2)
75% of their VO2R for 20 min (P2); 3) 90-100% of VO2R
in 3-min intervals (1:1 ratio) for 5 sets (P3); and 4) 75% of VO2R (4.5
mph) uphill (6-9% grade) for 20 min (P4). Completed repetitions, average
power and velocity, heart rate (HR), and ratings of perceived exertion
(RPE) were assessed each set. Protocols P1
to P4 resulted in 9.1 to 18.6% fewer total repetitions performed
compared to the control RE protocol with the squat experiencing the
greatest reduction. Average power and velocity were significantly
reduced for the high pull, squat, and bench press following
most AE protocols. RPE values for the high pull and squat were
significantly higher in P1 to P4 compared to control. HR was
significantly higher during RE following P1-P4 compared to control by
4.3 to 5.5%. These results indicate acute RE performance is
compromised in healthy men following AE exercise of different type,
intensity, and duration with largest reductions observed following
high-intensity interval exercise.
Copyright (C) 2016 by the National Strength & Conditioning Association.