Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/25110
Appears in Collections:Faculty of Health Sciences and Sport Journal Articles
Peer Review Status: Refereed
Title: Effects of a novel neurodynamic tension technique on muscle extensibility and stretch tolerance: a counterbalanced cross-over study (Forthcoming/Available Online)
Authors: Pietrzak, Max
Vollaard, Niels
Contact Email: n.vollaard@stir.ac.uk
Keywords: flexibility
hamstrings
muscle extensibility
neurodynamics
stretching
neuronal desensitisation
Issue Date: 19-Dec-2016
Citation: Pietrzak M & Vollaard N (2016) Effects of a novel neurodynamic tension technique on muscle extensibility and stretch tolerance: a counterbalanced cross-over study (Forthcoming/Available Online), Journal of Sport Rehabilitation.
Abstract: Context:  Neurodynamic tension affects hamstring extensibility and stretch tolerance, and is considered important in hamstring injury management. Neurodynamic tension was postulated to affect segmental muscle extensibility and stretch tolerance, and potentially also demonstrate extra-segmental and contralateral effects.   Objectives:  Assess the effects of a novel sciatic-tibial neurodynamic tension technique, the modified long sit slump (MLSS), on segmental, extra-segmental and contralateral muscle extensibility and stretch tolerance.  Study design:  Counterbalanced cross-over study.  Setting:  University research laboratory.  Participants:  Thirteen healthy and active subjects (mean±SD age 24±8 y, BMI 23.1±2.8 kg·m-2).  Intervention:  MLSS application (5 seconds, 5 repetitions, 3 sets) on two occasions with a three-week washout period, and either stance or skill leg treated in a counterbalanced manner.  Main outcome measures:  Segmental and extra-segmental muscle extensibility were measured utilising passive straight leg raise (PSLR) and prone knee bend (PKB) at pre-, immediately post- and one hour post-intervention. Stretch intensity ratings were measured utilising a simple numerical rating scale (SNRS).  Results:  MLSS significantly increased PSLR and PKB bilaterally (p<0.001). The effect for PSLR was greater in the ipsilateral leg compared to the contralateral leg (baseline to one hour post: +9±6°and +5±5° respectively, p<0.001), but not for PKB (baseline to one hour post: ipsilateral leg +5±5°, contralateral leg +5±4°). For both PSLR and PKB the effect of the first session was retained at the start of the second session 3 weeks later. SNRS data were consistent with increased stretch tolerance.  Conclusions:  Application of a novel sciatic-tibial neurodynamic tension technique, the MLSS, increases muscle extensibility and stretch tolerance segmentally, extra-segmentally and contra-laterally.  Level of evidence:  2C Outcomes research.
DOI Link: http://dx.doi.org/10.1123/jsr.2016-0171
Rights: Accepted author manuscript version reprinted, by permission, from Journal of Sport Rehabilitation, 2016, https://doi.org/10.1123/jsr.2016-0171. © Human Kinetics, Inc.

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