MAXIMUM NUMBER OF REPETITIONS, TOTAL WEIGHT LIFTED AND NEUROMUSCULAR FATIGUE IN INDIVIDUALS WITH DIFFERENT TRAINING BACKGROUNDS
Journal Title: Biology of Sport - Year 2013, Vol 30, Issue 2
Abstract
The aim of this study was to evaluate the performance, as well as neuromuscular activity, in a strength task in subjects with different training backgrounds. Participants (n = 26) were divided into three groups according to their training backgrounds (aerobic, strength or mixed) and submitted to three sessions: (1) determination of the maximum oxygen uptake during the incremental treadmill test to exhaustion and familiarization of the evaluation of maximum strength (1RM) for the half squat; (2) 1RM determination; and (3) strength exercise, four sets at 80% of the 1RM, in which the maximum number of repetitions (MNR), the total weight lifted (TWL), the root mean square (RMS) and median frequency (MF) of the electromyographic (EMG) activity for the second and last repetition were computed. There was an effect of group for MNR, with the aerobic group performing a higher MNR compared to the strength group (P = 0.045), and an effect on MF with a higher value in the second repetition than in the last repetition (P = 0.016). These results demonstrated that individuals with better aerobic fitness were more fatigue resistant than strength trained individuals. The absence of differences in EMG signals indicates that individuals with different training backgrounds have a similar pattern of motor unit recruitment during a resistance exercise performed until failure, and that the greater capacity to perform the MNR probably can be explained by peripheral adaptations.
Authors and Affiliations
Valeria Panissa, Raymundo Azevedo Neto, Ursula Julio, Leonardo Andreato, Claudio Pinto e Silva, Felipe Hardt, Emerson Franchini
Keywords
Related Articles
- EP ID EP59149
- DOI -
- Views 93
- Downloads 0
Effect of soccer training on the running speed and the blood lactate concentration at the lactate minimum test
Tegtbur et al. [23] devised a new method able to estimate the intensity at maximal lactate steady state termed “lactate minimum test. According to Billat et al. [7], no studies have yet been published on the affect of tr...
Sexual maturation effect on physical fitness in girls: a longitudinal study
The purpose of the present longitudinal study was to find associations between sexual maturation dynamics and improvement in performance of fitness tests. 34 11- to 13- year-old girls performed standing long jump, 20 m...
Assessment of morphological architecture of feet in rock-climbers
It was hypothetically assumed that rock-climbers have normal foot structure. The aim of this study was to assess the structure of all the foot segments. Materials and methods: This study embraced 43 rock-climbers, who ha...
THE ROLE OF SALIVARY IMMUNOGLOBULIN A IN THE PREVENTION OF THE UPPER RESPIRATORY TRACT INFECTIONS IN ATHLETES – AN OVERVIEW
Athletes subjected to high work loads may experience temporary suppression of the functions in the immune system which increases the susceptibility to infections of such subjects. Namely, upper respiratory tract infectio...
ASSESSMENT OF EXTERNAL AND INTERNAL LOADS IN THE TRIPLE JUMP VIA INVERSE DYNAMICS SIMULATION
The triple jump is a demanding athletics event that, after an approach run, consists of three consecutive phases: the hop, the bound, and the jump. During the involved three take-off actions a jumper is exposed to increa...