Adaptations during familiarization to resistive exercise

Calder, Kristina M.; Gabriel, David A.

doi:10.1016/j.jelekin.2006.02.006

Cited by 30 publications

(37 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the present study, we veriWed that increases in the PT and TW were concomitant to decreases in the Time PT , increases in the RFD and RVD, but with no changes in the Ang PT . Therefore, we corroborate with previous studies focused on familiarization (Calder and Gabriel 2007) that torque may be higher and developed at faster rates after STS, without noticeable changes in the muscular length-tension relationship, by using Ang PT as reference for comparisons. Some previous studies have found increases in the RFD (Aagaard et al 2002) and RVD (Brown and Whitehurst 2003) after short periods of training protocols (2-5 sessions), which also corroborate with our results.…”

Section: Discussionsupporting

confidence: 90%

“…Taken together, increases in RFD, RVD, and EMG activity can elucidate the mechanisms related to increases in the PT, which were diVerent between velocities for some variables. According to previous literature about familiarization (Calder and Gabriel 2007), a single strength session may promote increases in the PT (12% at 60°s ¡1 and 8.7% at 180°s ¡1 ) and TW (13.5% at 60°s ¡1 and 10.7% at 180°s ¡1 ). These results also may quantify the changes related to habituation sessions as previously veriWed for trunk extensors (Urzica et al 2007).…”

Section: Discussionmentioning

confidence: 86%

“…The literature has previously reported increases in the EMG for agonist muscles after familiarization protocols (Calder and Gabriel 2007); however, some studies have also found changes in torque, with neither concomitant changes after a few sessions of resistance exercise in dorsiXexors EMG (Holtermann et al 2005) nor knee extensors EMG (Carolan and Cafarelli 1992;Coburn et al 2006). It may result from synchronization of motor units discharge, optimizing motor unit Wring rates ("doublet discharges") (Holtermann et al 2007), and/ or decreases in the antagonist (hamstrings) coactivation (Carolan and Cafarelli 1992;Coburn et al 2006).…”

Section: Discussionmentioning

confidence: 99%

“…RFD index describes the changes in motoneuron excitability, improving explosive force generation during the initial phases of such training programs (Aagaard et al 2002;Holtermann et al 2007). This fact may support the use of habituation sessions to avoid motor learning artifacts (increased co-contraction and low neural drive to agonist muscles; Calder and Gabriel 2007) since the habituation may increase the dynamometric measurements (Urzica et al 2007). …”

Section: Introductionmentioning

confidence: 98%

See 3 more Smart Citations

Effects of a single habituation session on neuromuscular isokinetic profile at different movement velocities

et al. 2010

View full text Add to dashboard Cite

Single training session (STS) may increase the power output (i.e., maximal torque) in different contraction types; however, little is known about the neuromuscular adaptations to reach this enhancement. In this way, the present study examined the differences between knee extensors EMG, kinematics, and dynamometry at 60 and 180° s(-1) before (PRE) and after (POST) a STS. Seventeen healthy males completed three different tasks: (1) 5-maximal isokinetic knee extensions, without previous habituation (PRE) at 60 and 180° s(-1); (2) in the same day and after a proper rest, two bouts of 5-maximal isokinetic contractions (STS) at 60 and 180° s(-1); and (3) in a new visit, POST consisted in new 5-maximal isokinetic contractions at 60 and 180° s(-1). The main parameters examined were: knee extensors peak torque (PT), total work (TW), EMG (prior to the movement onset, agonist and antagonist activation), rate of force (RFD), and velocity development (RVD). There was significant increase in PT [12% (60° s(-1)) and 8.7% (180° s(-1))] and TW [13.5% (60° s(-1)) and 10.7% (180° s(-1))] from PRE to POST sessions. Increases in RFD were found for both velocities (p < 0.05); however, RVD and vastus lateralis EMG prior to the movement onset were significantly higher for POST only at 60° s(-1). The RFD percentage of change (%change) was significantly correlated to %change for PT at 60° s(-1) (r(2) = 0.53) and 180° s(-1) (r(2) = 0.45). In conclusion, STS improves neural strategies to contract muscles stronger and faster at the slowest velocity, while higher velocities present different adaptations and might need more practice to further adaptations.

show abstract

Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 86%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

See 2 more Smart Citations

Effects of a single habituation session on neuromuscular isokinetic profile at different movement velocities

et al. 2010

View full text Add to dashboard Cite

show abstract

“…The first session was used to familiarize the subject with the task requirements (Calder and Gabriel, 2007). Participants also completed a physical activity questionnaire as part of the procedures during the task familiarization session.…”

Section: Testing Proceduresmentioning

confidence: 99%

Experimental and modeling investigation of spectral compression of biceps brachii SEMG activity with increasing force levels

Gabriel

Kamen

2009

Journal of Electromyography and Kinesiology

Self Cite

View full text Add to dashboard Cite

Reliability of a simple method for determining muscle fiber conduction velocity

McIntosh

Gabriel

2012

Muscle and Nerve

Self Cite

View full text Add to dashboard Cite

The procedures resulted in highly reliable MFCV values, and included: (1) electric identification of motor points prior to electrode placement; (2) twitch identification of muscle fiber orientation to guide initial electrode placement; (3) rotation of electrodes clockwise or counter-clockwise to maximize the similarity and delay of compound muscle action potentials across all detection surfaces; and (4) minimization of synergistic activity during voluntary contractions.

show abstract

Adaptations during familiarization to resistive exercise

Cited by 30 publications

References 36 publications

Effects of a single habituation session on neuromuscular isokinetic profile at different movement velocities

Effects of a single habituation session on neuromuscular isokinetic profile at different movement velocities

Experimental and modeling investigation of spectral compression of biceps brachii SEMG activity with increasing force levels

Reliability of a simple method for determining muscle fiber conduction velocity

Contact Info

Product

Resources

About