STRENGTH | MUSCLE – REPS – AGING


1 RESEARCH ARTICLE


REPS TO FAILURE VS. NOT TO FAILURE DURING CONCURRENT TRAINING IN ELDERLY MEN – 2018


da Silva LXN1Teodoro JL1Menger E1Lopez P1Grazioli R1Farinha J1Moraes K1Bottaro M2Pinto RS1Izquierdo M3Cadore EL4.
METHOD
– Compared the neuromuscular adaptations induced by concurrent training (CT) performed with repetitions to concentric failure and not to failure in elderly men
– 52 individuals (66.2 ± 5.2 yrs) completed the pre- and post-measurements and were divided into three groups:
A) repetitions to failure (RFG, n = 17)
B) repetitions not to failure (NFG, n = 20)
C) repetitions not to failure with total volume equalized to RFG (ENFG, n = 15)
– Participants were assessed in isometric knee extension peak torque (PTiso), maximal strength (1RM) in the leg press (LP) and knee extension (KE) exercises, quadriceps femoris muscle thickness (QF MT), specific tension, rate of torque development (RTD) at 50, 100 and 250 ms, countermovement jump (CMJ) and squat jump (SJ) performance, as well as maximal neuromuscular activity (EMGmax) of the vastus lateralis (VL) and rectus femoris (RF) muscles
– CT was performed over 12 weeks, twice weekly
– Along with each specific strength training program, each group also underwent an endurance training in the same session
RESULTS
– After training, all groups improved similarly and significantly in LP and KE 1RM, PTiso, CMJ and SJ performance, RTD variables, specific tension, and VL EMGmax
– QF MT improved only in RFG and ENFG
CONCLUSION
– These results suggest that repetitions until concentric failure does not provide further neuromuscular performance gains and muscle hypertrophy, and that even a low number of repetitions relative to the maximal possible (i.e., 50%) optimizes neuromuscular performance in elderly men
– Training volume appears to be more important for muscle hypertrophy than training using maximal repetitions


 

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