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Dynamic stretching alone can impair slower velocity isokinetic performance of young male handball players for at least 24 hours.
PLoS One. 2019; 14(1):e0210318.Plos

Abstract

There are many adult studies reporting static stretch (SS)-induced deficits and dynamic stretch (DS) performance improvements shortly after the intervention. However, there is only a single study examining stretch-induced performance changes with youth at 24 hours' post-stretch. The objective of this study was to examine physiological responses of young trained athletes at 24-hours after experiencing SS or DS protocols. Eight young male, elite handball players (age: 16.1±5.1 years) were tested prior to-, 3-minutes and 24-hours following the three conditions (DS, SS, Control) in a randomized and counterbalanced order. Similar volumes of SS (2 repetitions of 75s for each leg) and DS (5 repetitions of 30s for each leg) involved one stretch each for the quadriceps and hamstrings. Tests included (i) two 4s maximal voluntary isometric contractions (MVC) at 60° of knee flexion with 2-min rest, (ii) two maximal isokinetic contractions each at 60°/sec and 300°/sec with 1-min rest, and (iii) two drop jumps with 30-sec rest. To simulate a full warm-up, dynamic activity including 5 minutes of aerobic cycling (70 rpm; 1 kilopond), 4 submaximal isometric contractions and 4 drop jumps were instituted before the pre-tests and following the interventions. Two-way repeated measures ANOVAs revealed that 1) both the SS and control conditions exhibited knee extensor 60°.s-1 (SS:-10.3%; p = 0.04, Control: -8.7%; p = 0.07) and 300°.s-1 (SS: -12.9%; p = 0.005, Control: -16.3%; p = 0.02) isokinetic deficits at post-test, 2) DS impaired knee flexor 60°.s-1 isokinetic work and power-related measures at post-test (Work: -10.1%; p = 0.0006; Power: -19.1%; p = 0.08) and at 24-hours' post-test (Work: 9.9%; p = 0.023; Power: -9.6%; p = 0.01), 3) DS (12.07% and 10.47%) and SS (13.7% and 14.6%) enhanced knee flexor 300°.s-1 isokinetic force and power-related measures compared to control. In conclusion, testing-induced knee extensor isokinetic impairments were counterbalanced by DS, however the hip flexion DS could have produced minor muscle damage for at least 24-hours decreasing knee flexor forces and power at 60°.s-1.

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Authors+Show Affiliations

Haddad M
Sport Science Program, College of Arts and Sciences, Qatar University, Doha, Qatar.
Prince MS
Sport Science Program, College of Arts and Sciences, Qatar University, Doha, Qatar.
Zarrouk N
National Sports Medicine Programme, Excellence in Football Project, Aspetar - Orthopedic and Sports Medicine Hospital, Doha, Qatar.
Tabben M
ASPREV Department, Aspetar Orthopedic and Sports Medicine Hospital, Doha, Qatar.
Behm DG
School of Human Kinetics and Recreation, Memorial University of Newfoundland, St. John's, Newfoundland, Canada.
Chamari K
AHP Research Centre, Aspetar, Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar.

MeSH

AdolescentAthletic PerformanceElectromyographyHumansIsometric ContractionKneeMaleMuscle Stretching ExercisesMuscle, SkeletalRandom AllocationRange of Motion, ArticularSportsTime FactorsWarm-Up Exercise

Pub Type(s)

Journal Article
Observational Study
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

30682044

Citation

Haddad, Monoem, et al. "Dynamic Stretching Alone Can Impair Slower Velocity Isokinetic Performance of Young Male Handball Players for at Least 24 Hours." PloS One, vol. 14, no. 1, 2019, pp. e0210318.
Haddad M, Prince MS, Zarrouk N, et al. Dynamic stretching alone can impair slower velocity isokinetic performance of young male handball players for at least 24 hours. PLoS One. 2019;14(1):e0210318.
Haddad, M., Prince, M. S., Zarrouk, N., Tabben, M., Behm, D. G., & Chamari, K. (2019). Dynamic stretching alone can impair slower velocity isokinetic performance of young male handball players for at least 24 hours. PloS One, 14(1), e0210318. https://doi.org/10.1371/journal.pone.0210318
Haddad M, et al. Dynamic Stretching Alone Can Impair Slower Velocity Isokinetic Performance of Young Male Handball Players for at Least 24 Hours. PLoS One. 2019;14(1):e0210318. PubMed PMID: 30682044.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Dynamic stretching alone can impair slower velocity isokinetic performance of young male handball players for at least 24 hours. AU - Haddad,Monoem, AU - Prince,Mohammad Shoaib, AU - Zarrouk,Nidhal, AU - Tabben,Montassar, AU - Behm,David G, AU - Chamari,Karim, Y1 - 2019/01/25/ PY - 2018/05/14/received PY - 2018/12/20/accepted PY - 2019/1/26/entrez PY - 2019/1/27/pubmed PY - 2019/10/23/medline SP - e0210318 EP - e0210318 JF - PloS one JO - PLoS One VL - 14 IS - 1 N2 - There are many adult studies reporting static stretch (SS)-induced deficits and dynamic stretch (DS) performance improvements shortly after the intervention. However, there is only a single study examining stretch-induced performance changes with youth at 24 hours' post-stretch. The objective of this study was to examine physiological responses of young trained athletes at 24-hours after experiencing SS or DS protocols. Eight young male, elite handball players (age: 16.1±5.1 years) were tested prior to-, 3-minutes and 24-hours following the three conditions (DS, SS, Control) in a randomized and counterbalanced order. Similar volumes of SS (2 repetitions of 75s for each leg) and DS (5 repetitions of 30s for each leg) involved one stretch each for the quadriceps and hamstrings. Tests included (i) two 4s maximal voluntary isometric contractions (MVC) at 60° of knee flexion with 2-min rest, (ii) two maximal isokinetic contractions each at 60°/sec and 300°/sec with 1-min rest, and (iii) two drop jumps with 30-sec rest. To simulate a full warm-up, dynamic activity including 5 minutes of aerobic cycling (70 rpm; 1 kilopond), 4 submaximal isometric contractions and 4 drop jumps were instituted before the pre-tests and following the interventions. Two-way repeated measures ANOVAs revealed that 1) both the SS and control conditions exhibited knee extensor 60°.s-1 (SS:-10.3%; p = 0.04, Control: -8.7%; p = 0.07) and 300°.s-1 (SS: -12.9%; p = 0.005, Control: -16.3%; p = 0.02) isokinetic deficits at post-test, 2) DS impaired knee flexor 60°.s-1 isokinetic work and power-related measures at post-test (Work: -10.1%; p = 0.0006; Power: -19.1%; p = 0.08) and at 24-hours' post-test (Work: 9.9%; p = 0.023; Power: -9.6%; p = 0.01), 3) DS (12.07% and 10.47%) and SS (13.7% and 14.6%) enhanced knee flexor 300°.s-1 isokinetic force and power-related measures compared to control. In conclusion, testing-induced knee extensor isokinetic impairments were counterbalanced by DS, however the hip flexion DS could have produced minor muscle damage for at least 24-hours decreasing knee flexor forces and power at 60°.s-1. SN - 1932-6203 UR - https://www.unboundmedicine.com/medline/citation/30682044/Dynamic_stretching_alone_can_impair_slower_velocity_isokinetic_performance_of_young_male_handball_players_for_at_least_24_hours_ DB - PRIME DP - Unbound Medicine ER -