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Evidence of nonlocal muscle fatigue in male youth.
Appl Physiol Nutr Metab. 2017 Mar; 42(3):229-237.AP

Abstract

Evidence for nonlocal muscle fatigue (NLMF) has been inconsistent in adults, with no studies investigating youth. The objective was to examine NLMF in youth. Forty-two young males (age, 10-13 years) were tested for maximal voluntary isometric contraction (MVIC) force of the ipsilateral and contralateral knee extensors at 90° and 120° knee flexion, elbow flexors at 90°, handgrip, knee extensor isokinetic torque (300°·s-1 analyzed at 90° and 120° knee flexion), as well as a unilateral countermovement jump (CMJ) and Y Balance test (YBT). Isokinetic fatigue group (n = 15) had unilateral fatigue induced with 10 sets of 20 repetitions of maximal isokinetic knee extensor contractions at 300°·s-1. Isometric fatigue group (n = 15) used 10 repetitions of 6-s knee extensor MVIC whereas the control group (n = 12) were not fatigued. There was no significant difference in the response to the isometric- or isokinetic-fatigue intervention protocols. Main time effects indicated that NLMF was evident with the contralateral knee extensor MVIC at 90° (p = 0.008; 8.9%), knee extensor isokinetic torque at 90° (p < 0.001; 11.4%), and 120° (p = 0.05; 5.4%), CMJ (p = 0.02; 11.5%), handgrip (p = 0.06; 4.5%), elbow flexors (p < 0.001; 7.7%), and YBT (p = 0.001; 5.6%). Ipsilateral NLMF deficits occurred with handgrip (p < 0.001; 7.3%), elbow flexors MVICs (p < 0.001; 10.7%), CMJ (p = 0.02; 12.2%), and YBT (p = 0.002; 3.8%). NLMF with similar relative fatigue-induced deficits of fatigued and nonfatigued limbs suggest that youth fatigue is highly dependent upon the extent of activation or inhibition of the nervous system. Coaches of young athletes might consider developing technical motor skills before fatiguing exercise components, which might hinder the proficiency of their performance.

Authors+Show Affiliations

a Tunisian Research Laboratory "Sport Performance Optimization", National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia.a Tunisian Research Laboratory "Sport Performance Optimization", National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia. c Sports Performance Research Institute, AUT University, Auckland, New Zealand.a Tunisian Research Laboratory "Sport Performance Optimization", National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia.a Tunisian Research Laboratory "Sport Performance Optimization", National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia.a Tunisian Research Laboratory "Sport Performance Optimization", National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia.b Memorial University of Newfoundland, School of Human Kinetics and Recreation, St. John's, NL A1C 5S7, Canada.

Pub Type(s)

Journal Article
Randomized Controlled Trial

Language

eng

PubMed ID

28177751

Citation

Ben Othman, Aymen, et al. "Evidence of Nonlocal Muscle Fatigue in Male Youth." Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquee, Nutrition Et Metabolisme, vol. 42, no. 3, 2017, pp. 229-237.
Ben Othman A, Chaouachi A, Hammami R, et al. Evidence of nonlocal muscle fatigue in male youth. Appl Physiol Nutr Metab. 2017;42(3):229-237.
Ben Othman, A., Chaouachi, A., Hammami, R., Chaouachi, M. M., Kasmi, S., & Behm, D. G. (2017). Evidence of nonlocal muscle fatigue in male youth. Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquee, Nutrition Et Metabolisme, 42(3), 229-237. https://doi.org/10.1139/apnm-2016-0400
Ben Othman A, et al. Evidence of Nonlocal Muscle Fatigue in Male Youth. Appl Physiol Nutr Metab. 2017;42(3):229-237. PubMed PMID: 28177751.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Evidence of nonlocal muscle fatigue in male youth. AU - Ben Othman,Aymen, AU - Chaouachi,Anis, AU - Hammami,Raouf, AU - Chaouachi,Mehdi M, AU - Kasmi,Sofien, AU - Behm,David G, Y1 - 2016/11/02/ PY - 2017/2/9/pubmed PY - 2017/3/30/medline PY - 2017/2/9/entrez KW - balance KW - children KW - crossover fatigue KW - enfants KW - fatigue croisée KW - isokinetic KW - isokinétique KW - spécificité de l’entraînement KW - training specificity KW - équilibre SP - 229 EP - 237 JF - Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme JO - Appl Physiol Nutr Metab VL - 42 IS - 3 N2 - Evidence for nonlocal muscle fatigue (NLMF) has been inconsistent in adults, with no studies investigating youth. The objective was to examine NLMF in youth. Forty-two young males (age, 10-13 years) were tested for maximal voluntary isometric contraction (MVIC) force of the ipsilateral and contralateral knee extensors at 90° and 120° knee flexion, elbow flexors at 90°, handgrip, knee extensor isokinetic torque (300°·s-1 analyzed at 90° and 120° knee flexion), as well as a unilateral countermovement jump (CMJ) and Y Balance test (YBT). Isokinetic fatigue group (n = 15) had unilateral fatigue induced with 10 sets of 20 repetitions of maximal isokinetic knee extensor contractions at 300°·s-1. Isometric fatigue group (n = 15) used 10 repetitions of 6-s knee extensor MVIC whereas the control group (n = 12) were not fatigued. There was no significant difference in the response to the isometric- or isokinetic-fatigue intervention protocols. Main time effects indicated that NLMF was evident with the contralateral knee extensor MVIC at 90° (p = 0.008; 8.9%), knee extensor isokinetic torque at 90° (p < 0.001; 11.4%), and 120° (p = 0.05; 5.4%), CMJ (p = 0.02; 11.5%), handgrip (p = 0.06; 4.5%), elbow flexors (p < 0.001; 7.7%), and YBT (p = 0.001; 5.6%). Ipsilateral NLMF deficits occurred with handgrip (p < 0.001; 7.3%), elbow flexors MVICs (p < 0.001; 10.7%), CMJ (p = 0.02; 12.2%), and YBT (p = 0.002; 3.8%). NLMF with similar relative fatigue-induced deficits of fatigued and nonfatigued limbs suggest that youth fatigue is highly dependent upon the extent of activation or inhibition of the nervous system. Coaches of young athletes might consider developing technical motor skills before fatiguing exercise components, which might hinder the proficiency of their performance. SN - 1715-5320 UR - https://www.unboundmedicine.com/medline/citation/28177751/Evidence_of_nonlocal_muscle_fatigue_in_male_youth_ L2 - https://cdnsciencepub.com/doi/10.1139/apnm-2016-0400?url_ver=Z39.88-2003&amp;rfr_id=ori:rid:crossref.org&amp;rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -