PMID- 28482762 OWN - NLM STAT- MEDLINE DCOM- 20180529 LR - 20181113 IS - 1945-5119 (Electronic) IS - 1074-9357 (Print) IS - 1074-9357 (Linking) VI - 24 IP - 7 DP - 2017 Oct TI - POWER training in chronic stroke individuals: differences between responders and nonresponders. PG - 496-502 LID - 10.1080/10749357.2017.1322249 [doi] AB - BACKGROUND: Lower extremity muscle weakness is a primary contributor to post-stroke dysfunction. Resistance training is an effective treatment for hemiparetic weakness and improves walking performance. Post-stroke subject characteristics that do or do not improve walking speed following resistance training are unknown. OBJECTIVE: The purpose of this paper was to describe baseline characteristics, as well as responses to training, associated with achieving a minimal clinically important difference (MCID) in walking speed (>/=0.16 m/s) following Post-stroke Optimization of Walking Using Explosive Resistance (POWER) training. METHODS: Seventeen participants completed 24 sessions of POWER training, which included intensive progressive leg presses, jump training, calf raises, sit-to-stands, step-ups, and over ground fast walking. Outcomes included SSWS, FCWS, DGI, FMA-LE, 6-MWT, paretic knee power, non-paretic knee power, and paretic step ratio. RESULTS: Specific to those who reached MCID in SSWS (e.g. "responders"), significant improvements in SSWS, FCWS, 6-MWT, paretic knee power, and non-paretic knee power was realized. Paretic knee power and non-paretic knee power significantly improved in those who did not achieve MCID for gait speed (e.g. "non-responders"). CONCLUSION: The potential for POWER training to enhance general locomotor function was confirmed. Baseline paretic knee strength/power may be an important factor in how an individual responds to this style of training. The lack of change within the non-responders emphasizes the contribution of factors other than lower extremity muscle power improvement to locomotor dysfunction. FAU - Aaron, Stacey E AU - Aaron SE AUID- ORCID: 0000-0002-2532-8278 AD - a Department of Health Sciences and Research, College of Health Professions , Medical University of South Carolina , Charleston , SC , USA. FAU - Hunnicutt, Jennifer L AU - Hunnicutt JL AUID- ORCID: 0000-0001-7588-6676 AD - a Department of Health Sciences and Research, College of Health Professions , Medical University of South Carolina , Charleston , SC , USA. FAU - Embry, Aaron E AU - Embry AE AUID- ORCID: 0000-0003-3092-9964 AD - a Department of Health Sciences and Research, College of Health Professions , Medical University of South Carolina , Charleston , SC , USA. AD - b Division of Physical Therapy, College of Health Professions , Medical University of South Carolina , Charleston , SC , USA. AD - c Ralph H. Johnson VA Medical Center , Charleston , SC , USA. FAU - Bowden, Mark G AU - Bowden MG AD - a Department of Health Sciences and Research, College of Health Professions , Medical University of South Carolina , Charleston , SC , USA. AD - b Division of Physical Therapy, College of Health Professions , Medical University of South Carolina , Charleston , SC , USA. AD - c Ralph H. Johnson VA Medical Center , Charleston , SC , USA. FAU - Gregory, Chris M AU - Gregory CM AD - a Department of Health Sciences and Research, College of Health Professions , Medical University of South Carolina , Charleston , SC , USA. AD - b Division of Physical Therapy, College of Health Professions , Medical University of South Carolina , Charleston , SC , USA. AD - c Ralph H. Johnson VA Medical Center , Charleston , SC , USA. LA - eng GR - I01 RX000844/RX/RRD VA/United States GR - P20 GM109040/GM/NIGMS NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20170508 PL - England TA - Top Stroke Rehabil JT - Topics in stroke rehabilitation JID - 9439750 SB - IM MH - Adult MH - Aged MH - Female MH - Humans MH - Knee Joint/physiopathology MH - Lower Extremity/physiopathology MH - Male MH - Middle Aged MH - *Muscle Strength MH - *Resistance Training MH - Stroke/*therapy MH - Stroke Rehabilitation/*methods MH - Treatment Outcome MH - Walking Speed MH - Young Adult PMC - PMC5801689 MID - NIHMS937792 OTO - NOTNLM OT - 6-MWT: 6-min walk test OT - DGI: Dynamic Gait Index OT - FCWS: fastest comfortable walking speed OT - FMA-LE: Fugl-Myer Lower Extremity Assessment OT - MCID: minimal clinically important difference OT - MVIC: maximum voluntary isometric contraction OT - NPKP: non-paretic knee power OT - PKP: paretic knee power OT - POWER: Post-stroke Optimization of Walking using Explosive Resistance OT - PSR: paretic step ratio OT - SSWS: self-selected walking speed OT - Stroke OT - exercise OT - gait OT - power training OT - strength training EDAT- 2017/05/10 06:00 MHDA- 2018/05/31 06:00 PMCR- 2018/02/07 CRDT- 2017/05/10 06:00 PHST- 2017/05/10 06:00 [pubmed] PHST- 2018/05/31 06:00 [medline] PHST- 2017/05/10 06:00 [entrez] PHST- 2018/02/07 00:00 [pmc-release] AID - 10.1080/10749357.2017.1322249 [doi] PST - ppublish SO - Top Stroke Rehabil. 2017 Oct;24(7):496-502. doi: 10.1080/10749357.2017.1322249. Epub 2017 May 8.