title: A single set of exhaustive exercise before local muscular endurance training improves quadriceps strength and endurance in young men.
abstract: BACKGROUND
  The purpose of this study was to examine the effects of an additional set of exhaustive exercise before local muscular endurance (LME) training on maximal dynamic strength and endurance of quadriceps muscle in young men.
  
  
  METHODS
  Twenty-seven healthy men (age: 20.9±1.8 years) performed one repetition maximum (1RM), muscular endurance, and magnetic resonance imaging (MRI) tests on two separate occasions (before and after an 8-wk LME training program using a bilateral knee extensor machine). After baseline testing, the subjects were divided into three groups: untrained control (CO, N.=9), traditional training (TR, N.=9), and prior exhaustive training (PE, N.=9). Both the TR and PE groups trained using the same LME training protocol (2 d∙wk-1; 3 sets of 15-20 repetitions at 50% of 1RM) throughout the 8-wk experimental period; the only difference was that the PE group performed an additional set of exhaustive exercise at 80% of 1RM immediately before each training session.
  
  
  RESULTS
  After 8 wk, the PE group experienced a greater (P<0.05) increase in 1RM, endurance, and work efficiency than the TR group. Additionally, no changes (P>0.05) in cross-sectional area (CSA), body mass and daily dietary intake were observed from pre- to post-test in either group.
  
  
  CONCLUSIONS
  These results suggest that the inclusion of a single set of exhaustive exercise at 80% of 1RM immediately before LME training can be a suitable strategy for inducing additional beneficial effects on quadriceps strength and endurance in young men.
authors.affiliation: Center of Biological and Health Sciences, North University of Paraná (UNOPAR), Londrina, Paraná, Brazil - afaguiarunesp@gmail.com.
authors.forename: Andreo Fernando
authors.initials: AF
authors.lastname: Aguiar
authors.forename: Cosme Franklim
authors.initials: CF
authors.lastname: Buzzachera
authors.forename: Vanda Cristina
authors.initials: VC
authors.lastname: Sanches
authors.forename: Rafael Mendes
authors.initials: RM
authors.lastname: Pereira
authors.forename: Rubens Alexandre
authors.initials: RA
authors.lastname: Da Silva Júnior
authors.forename: Renata Selvatici
authors.initials: RS
authors.lastname: Januário
authors.forename: Lucas Maciel
authors.initials: LM
authors.lastname: Rabelo
authors.forename: André Luís
authors.initials: AL
authors.lastname: Dos Santos Silva
mesh_terms: D000293:Adolescent; D000328:Adult; D004032:Diet; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D053580:Muscle Strength / Q000502:physiology; D018482:Muscle, Skeletal / Q000033:anatomy & histology / Q000502:physiology*; D010807:Physical Endurance / Q000502:physiology*; D052097:Quadriceps Muscle / Q000502:physiology*; D055070:Resistance Training / Q000379:methods*; D055815:Young Adult