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The effects of a single session of chiropractic care on strength, cortical drive, and spinal excitability in stroke patients

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Structural and chiropractic

Sci Rep.2019 Feb 25;9(1):2673.

Authors:

K Holt, I K Niazi, R W Nedergaard, J Duehr, I Amjad, M Shafique, M N Anwar, H Ndetan, K S Turker, H Haavik

Abstract.

The objective of this study was to investigate whether a single session of chiropractic care could increase strength in weak plantar flexor muscles in chronic stroke patients. Maximum voluntary contractions (strength) of the plantar flexors, soleus evoked V-waves (cortical drive), and H-reflexes were recorded in 12 chronic stroke patients, with plantar flexor muscle weakness, using a randomized controlled crossover design. Outcomes were assessed pre and post a chiropractic care intervention and a passive movement control. Repeated measures ANOVA was used to asses within and between group differences. Significance was set at p < 0.05. Following the chiropractic care intervention there was a significant increase in strength (F (1,11) = 14.49, p = 0.002; avg 64.2 ± 77.7%) and V-wave/Mmax ratio (F(1,11) = 9.67, p = 0.009; avg 54.0 ± 65.2%) compared to the control intervention. There was a significant strength decrease of 26.4 ± 15.5% (p = 0.001) after the control intervention. There were no other significant differences. Plantar flexor muscle strength increased in chronic stroke patients after a single session of chiropractic care. An increase in V-wave amplitude combined with no significant changes in H-reflex parameters suggests this increased strength is likely modulated at a supraspinal level. Further research is required to investigate the longer term and potential functional effects of chiropractic care in stroke recovery.

Publication Date: 

2019 Feb

OEID: 

5940

Holt, K., Niazi, KI., Nedergaard, WR., Duehr, J., Amjad, I., Shafique, M., Anwar, NM., Ndetan, H., Turker, SK., Haavik, H. (2019) 'The effects of a single session of chiropractic care on strength, cortical drive, and spinal excitability in stroke patients', Sci Rep.2019 Feb 25;9(1):2673.

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