NCT02622295

Brief Summary

Patients with spinal cord injury (SCI) experience metabolic syndrome, diabetes, obesity, pressure ulcers, and cardiovascular disease at far greater rates than the general population. A rehabilitation method to prevent or reverse the systemic metabolic consequences of SCI is a pressing need. The purpose of this study is to determine the dose of muscle activity that can enhance an oxidative muscle phenotype and improve clinical markers of metabolic health and bone turnover in patients with SCI. The long-term goal of this research is to develop exercise-based interventions to prevent secondary health conditions such as diabetes and to ultimately protect health-related quality of life (QOL). Specific Aim 1: To compare changes in skeletal muscle gene regulation in individuals who receive high frequency (HF) active-resisted stance and low frequency (LF) active-resisted stance for 3 years. Hypothesis 1: The expression of genes regulating skeletal muscle metabolism will support that HF and LF both instigate a shift toward an oxidative muscle phenotype. A novel finding will be that LF is a powerful regulator of oxidative pathways in skeletal muscle. Specific Aim 2: To compare changes in systemic markers of metabolic health and bone turnover in individuals with SCI who receive HF or LF for 3 years. Hypothesis 2: HF and LF will both reduce glucose/insulin levels and HOMA (homeostasis model assessment) score. Secondary Aim: To measure subject-reported QOL using the EQ-5D survey metric. Hypothesis 3: HF and LF subjects will show a trend toward improved self-reported QOL after 3 years. There will be an association between metabolic improvement and improved perception of QOL. These observations will support that this intervention has strong feasibility for future clinical translation.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
71

participants targeted

Target at P50-P75 for not_applicable

Timeline
Completed

Started May 2015

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

May 1, 2015

Completed
7 months until next milestone

First Submitted

Initial submission to the registry

December 2, 2015

Completed
2 days until next milestone

First Posted

Study publicly available on registry

December 4, 2015

Completed
6 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

November 18, 2021

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

November 18, 2021

Completed
12 months until next milestone

Results Posted

Study results publicly available

November 4, 2022

Completed
Last Updated

November 4, 2022

Status Verified

August 1, 2022

Enrollment Period

6.6 years

First QC Date

December 2, 2015

Results QC Date

August 30, 2022

Last Update Submit

October 6, 2022

Conditions

Keywords

metabolismglucoseosteoporosissecondary health conditionsquality of lifestandingelectrical stimulationdiabetesinsulinskeletal muscle

Outcome Measures

Primary Outcomes (12)

  • Acute Gene Regulation: MSTN

    Acute post-stimulation effect upon skeletal muscle myostatin (MSTN) expression, measured via muscle biopsy and exon array analysis. Probe summarization and probe set normalization were performed using robust multichip average, which included background correction, quantile normalization, log2 transformation and median polish probe set summarization. 0 represents no mRNA expression and higher values represent greater expression compared to all genes in the microarray.

    3 hours after a single session of electrical stimulation

  • Acute Gene Regulation: PGC1-alpha

    Acute post-stimulation effect upon skeletal muscle peroxisome proliferator-activated receptor gamma coactivator alpha (PGC1-alpha) expression, measured via muscle biopsy and exon array analysis. Probe summarization and probe set normalization were performed using robust multichip average, which included background correction, quantile normalization, log2 transformation and median polish probe set summarization. 0 represents no mRNA expression and higher values represent greater expression compared to all genes in the microarray.

    3 hours after a single session of electrical stimulation

  • Acute Gene Regulation: PDK4

    Acute post-stimulation effect upon skeletal muscle pyruvate dehydrogenase kinase, isozyme 4 (PDK4-alpha) expression, measured via muscle biopsy and exon array analysis. Probe summarization and probe set normalization were performed using robust multichip average, which included background correction, quantile normalization, log2 transformation and median polish probe set summarization. 0 represents no mRNA expression and higher values represent greater expression compared to all genes in the microarray.

    3 hours after a single session of electrical stimulation

  • Acute Gene Regulation: SDHB

    Acute post-stimulation effect upon skeletal muscle succinate dehydrogenase-B (SDHB) expression, measured via muscle biopsy and exon array analysis. Probe summarization and probe set normalization were performed using robust multichip average, which included background correction, quantile normalization, log2 transformation and median polish probe set summarization. 0 represents no mRNA expression and higher values represent greater expression compared to all genes in the microarray.

    3 hours after a single session of electrical stimulation

  • Post-training Gene Regulation: MSTN

    Pre- and post-training skeletal muscle myostatin (MSTN) expression, measured via muscle biopsy and exon array analysis. Probe summarization and probe set normalization were performed using robust multichip average, which included background correction, quantile normalization, log2 transformation and median polish probe set summarization. 0 represents no mRNA expression and higher values represent greater expression compared to all genes in the microarray.

    up to 3 years

  • Post-training Gene Regulation: PGC1-alpha

    Pre- and post-training skeletal muscle peroxisome proliferator-activated receptor gamma coactivator alpha (PGC1-alpha) expression, measured via muscle biopsy and exon array analysis. Probe summarization and probe set normalization were performed using robust multichip average, which included background correction, quantile normalization, log2 transformation and median polish probe set summarization. 0 represents no mRNA expression and higher values represent greater expression compared to all genes in the microarray.

    up to 3 years

  • Post-training Gene Regulation: PDK4

    Pre- and post-training skeletal muscle pyruvate dehydrogenase kinase, isozyme 4 (PDK4-alpha) expression, measured via muscle biopsy and exon array analysis. Probe summarization and probe set normalization were performed using robust multichip average, which included background correction, quantile normalization, log2 transformation and median polish probe set summarization. 0 represents no mRNA expression and higher values represent greater expression compared to all genes in the microarray.

    up to 3 years

  • Post-training Gene Regulation: SDHB

    Pre- and post-training skeletal muscle succinate dehydrogenase-B (SDHB) expression, measured via muscle biopsy and exon array analysis. Probe summarization and probe set normalization were performed using robust multichip average, which included background correction, quantile normalization, log2 transformation and median polish probe set summarization. 0 represents no mRNA expression and higher values represent greater expression compared to all genes in the microarray.

    up to 3 years

  • Post-training Metabolism: Fasting Glucose

    Pre- and post-training fasting glucose, measured via venipuncture and standard laboratory assays

    up to 3 years

  • Post-training Metabolism: Fasting Insulin

    Pre- and post-training fasting insulin, measured via venipuncture and standard laboratory assays

    up to 3 years

  • Post-training Metabolism: HOMA Score

    Pre- and post-training HOMA score, calculated via the Homeostasis Model Assessment equation. Maximum/minimum values: not applicable. Scores \>2 are indicative of insulin resistance.

    up to 3 years

  • Post-training Bone Turnover: Osteocalcin

    Pre- and post-training serum osteocalcin, measured via venipuncture and enzyme-linked immunosorbent assay

    up to 3 years

Secondary Outcomes (1)

  • Post-training Subject-report Measures: EQ-5D

    up to 3 years

Study Arms (2)

Acute gene regulation

EXPERIMENTAL

Adaptations in gene regulation in response to single-session electrically induced exercise

Behavioral: Single-session electrically induced exercise

Training Study

EXPERIMENTAL

Adaptations in gene regulation, metabolic markers, and subject-report metrics in response to up to 3 years of electrically induced exercise

Behavioral: Electrically-induced exercise training

Interventions

A single session of electrically induced exercise to the quadriceps and hamstring muscle groups of people with paralysis.

Acute gene regulation

Multiple sessions of electrically induced exercise to the quadriceps and hamstring muscle groups for up to 3 years in people with paralysis.

Training Study

Eligibility Criteria

Age21 Years - 60 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64)

You may qualify if:

  • Motor complete SCI (AIS A-B)

You may not qualify if:

  • Pressure ulcers
  • Chronic infection
  • Lower extremity muscle contractures
  • Deep vein thrombosis
  • Bleeding disorder
  • Recent limb fractures
  • Any comorbid disease known to affect bone metabolism (such as parathyroid dysfunction)
  • Pregnancy
  • Anti-osteoporosis medications
  • Vitamin D supplements
  • Metformin or other medications for diabetes.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Iowa

Iowa City, Iowa, 52242, United States

Location

Related Publications (28)

  • Dudley-Javoroski S, Saha PK, Liang G, Li C, Gao Z, Shields RK. High dose compressive loads attenuate bone mineral loss in humans with spinal cord injury. Osteoporos Int. 2012 Sep;23(9):2335-46. doi: 10.1007/s00198-011-1879-4. Epub 2011 Dec 21.

    PMID: 22187008BACKGROUND
  • Dudley-Javoroski S, Shields RK. Dose estimation and surveillance of mechanical loading interventions for bone loss after spinal cord injury. Phys Ther. 2008 Mar;88(3):387-96. doi: 10.2522/ptj.20070224. Epub 2008 Jan 17.

    PMID: 18202080BACKGROUND
  • Dudley-Javoroski S, Shields RK. Active-resisted stance modulates regional bone mineral density in humans with spinal cord injury. J Spinal Cord Med. 2013 May;36(3):191-9. doi: 10.1179/2045772313Y.0000000092.

    PMID: 23809588BACKGROUND
  • Dudley-Javoroski S, Littmann AE, Iguchi M, Shields RK. Doublet stimulation protocol to minimize musculoskeletal stress during paralyzed quadriceps muscle testing. J Appl Physiol (1985). 2008 Jun;104(6):1574-82. doi: 10.1152/japplphysiol.00892.2007. Epub 2008 Apr 24.

    PMID: 18436697BACKGROUND
  • Dudley-Javoroski S, Shields RK. Assessment of physical function and secondary complications after complete spinal cord injury. Disabil Rehabil. 2006 Jan 30;28(2):103-10. doi: 10.1080/09638280500163828.

    PMID: 16393840BACKGROUND
  • Adams CM, Suneja M, Dudley-Javoroski S, Shields RK. Altered mRNA expression after long-term soleus electrical stimulation training in humans with paralysis. Muscle Nerve. 2011 Jan;43(1):65-75. doi: 10.1002/mus.21831.

    PMID: 21171097BACKGROUND
  • Frey Law LA, Shields RK. Femoral loads during passive, active, and active-resistive stance after spinal cord injury: a mathematical model. Clin Biomech (Bristol). 2004 Mar;19(3):313-21. doi: 10.1016/j.clinbiomech.2003.12.005.

    PMID: 15003348BACKGROUND
  • Kunkel SD, Suneja M, Ebert SM, Bongers KS, Fox DK, Malmberg SE, Alipour F, Shields RK, Adams CM. mRNA expression signatures of human skeletal muscle atrophy identify a natural compound that increases muscle mass. Cell Metab. 2011 Jun 8;13(6):627-38. doi: 10.1016/j.cmet.2011.03.020.

    PMID: 21641545BACKGROUND
  • McHenry CL, Wu J, Shields RK. Potential regenerative rehabilitation technology: implications of mechanical stimuli to tissue health. BMC Res Notes. 2014 Jun 3;7:334. doi: 10.1186/1756-0500-7-334.

    PMID: 24894666BACKGROUND
  • McHenry CL, Shields RK. A biomechanical analysis of exercise in standing, supine, and seated positions: Implications for individuals with spinal cord injury. J Spinal Cord Med. 2012 May;35(3):140-7. doi: 10.1179/2045772312Y.0000000011.

    PMID: 22507023BACKGROUND
  • Petrie MA, Suneja M, Faidley E, Shields RK. A minimal dose of electrically induced muscle activity regulates distinct gene signaling pathways in humans with spinal cord injury. PLoS One. 2014 Dec 22;9(12):e115791. doi: 10.1371/journal.pone.0115791. eCollection 2014.

    PMID: 25531450BACKGROUND
  • Petrie MA, Suneja M, Faidley E, Shields RK. Low force contractions induce fatigue consistent with muscle mRNA expression in people with spinal cord injury. Physiol Rep. 2014 Feb 25;2(2):e00248. doi: 10.1002/phy2.248. eCollection 2014 Feb 1.

    PMID: 24744911BACKGROUND
  • Shields RK, Dudley-Javoroski S. Monitoring standing wheelchair use after spinal cord injury: a case report. Disabil Rehabil. 2005 Feb 4;27(3):142-6. doi: 10.1080/09638280400009337.

    PMID: 15823996BACKGROUND
  • Petrie M, Suneja M, Shields RK. Low-frequency stimulation regulates metabolic gene expression in paralyzed muscle. J Appl Physiol (1985). 2015 Mar 15;118(6):723-31. doi: 10.1152/japplphysiol.00628.2014. Epub 2015 Jan 29.

    PMID: 25635001BACKGROUND
  • Zhorne R, Dudley-Javoroski S, Shields RK. Skeletal muscle activity and CNS neuro-plasticity. Neural Regen Res. 2016 Jan;11(1):69-70. doi: 10.4103/1673-5374.169623. No abstract available.

    PMID: 26981083BACKGROUND
  • Petrie MA, Kimball AL, McHenry CL, Suneja M, Yen CL, Sharma A, Shields RK. Distinct Skeletal Muscle Gene Regulation from Active Contraction, Passive Vibration, and Whole Body Heat Stress in Humans. PLoS One. 2016 Aug 3;11(8):e0160594. doi: 10.1371/journal.pone.0160594. eCollection 2016.

    PMID: 27486743BACKGROUND
  • Shields RK. Turning Over the Hourglass. Phys Ther. 2017 Oct 1;97(10):949-963. doi: 10.1093/ptj/pzx072.

    PMID: 29029555BACKGROUND
  • Woelfel JR, Kimball AL, Yen CL, Shields RK. Low-Force Muscle Activity Regulates Energy Expenditure after Spinal Cord Injury. Med Sci Sports Exerc. 2017 May;49(5):870-878. doi: 10.1249/MSS.0000000000001187.

    PMID: 28009786BACKGROUND
  • Yen CL, McHenry CL, Petrie MA, Dudley-Javoroski S, Shields RK. Vibration training after chronic spinal cord injury: Evidence for persistent segmental plasticity. Neurosci Lett. 2017 Apr 24;647:129-132. doi: 10.1016/j.neulet.2017.03.019. Epub 2017 Mar 16.

    PMID: 28315725BACKGROUND
  • Oza PD, Dudley-Javoroski S, Shields RK. Modulation of H-Reflex Depression with Paired-Pulse Stimulation in Healthy Active Humans. Rehabil Res Pract. 2017;2017:5107097. doi: 10.1155/2017/5107097. Epub 2017 Oct 31.

    PMID: 29225972BACKGROUND
  • Woelfel JR, Dudley-Javoroski S, Shields RK. Precision Physical Therapy: Exercise, the Epigenome, and the Heritability of Environmentally Modified Traits. Phys Ther. 2018 Nov 1;98(11):946-952. doi: 10.1093/ptj/pzy092.

    PMID: 30388254BACKGROUND
  • Cole KR, Dudley-Javoroski S, Shields RK. Hybrid stimulation enhances torque as a function of muscle fusion in human paralyzed and non-paralyzed skeletal muscle. J Spinal Cord Med. 2019 Sep;42(5):562-570. doi: 10.1080/10790268.2018.1485312. Epub 2018 Jun 20.

    PMID: 29923814BACKGROUND
  • Dudley-Javoroski S, Lee J, Shields RK. Cognitive function, quality of life, and aging: relationships in individuals with and without spinal cord injury. Physiother Theory Pract. 2022 Jan;38(1):36-45. doi: 10.1080/09593985.2020.1712755. Epub 2020 Jan 8.

    PMID: 31914347BACKGROUND
  • Petrie MA, Sharma A, Taylor EB, Suneja M, Shields RK. Impact of short- and long-term electrically induced muscle exercise on gene signaling pathways, gene expression, and PGC1a methylation in men with spinal cord injury. Physiol Genomics. 2020 Feb 1;52(2):71-80. doi: 10.1152/physiolgenomics.00064.2019. Epub 2019 Dec 23.

    PMID: 31869286BACKGROUND
  • Lee J, Dudley-Javoroski S, Shields RK. Motor demands of cognitive testing may artificially reduce executive function scores in individuals with spinal cord injury. J Spinal Cord Med. 2021 Mar;44(2):253-261. doi: 10.1080/10790268.2019.1597482. Epub 2019 Apr 3.

    PMID: 30943119BACKGROUND
  • Shields RK. Precision Rehabilitation: How Lifelong Healthy Behaviors Modulate Biology, Determine Health, and Affect Populations. Phys Ther. 2022 Jan 1;102(1):pzab248. doi: 10.1093/ptj/pzab248. No abstract available.

    PMID: 34718793BACKGROUND
  • Shields RK, Dudley-Javoroski S. Epigenetics and the International Classification of Functioning, Disability and Health Model: Bridging Nature, Nurture, and Patient-Centered Population Health. Phys Ther. 2022 Jan 1;102(1):pzab247. doi: 10.1093/ptj/pzab247.

    PMID: 34718813BACKGROUND
  • Petrie MA, Taylor EB, Suneja M, Shields RK. Genomic and Epigenomic Evaluation of Electrically Induced Exercise in People With Spinal Cord Injury: Application to Precision Rehabilitation. Phys Ther. 2022 Jan 1;102(1):pzab243. doi: 10.1093/ptj/pzab243.

    PMID: 34718779BACKGROUND

MeSH Terms

Conditions

Spinal Cord InjuriesOsteoporosisDiabetes MellitusInsulin Resistance

Condition Hierarchy (Ancestors)

Spinal Cord DiseasesCentral Nervous System DiseasesNervous System DiseasesTrauma, Nervous SystemWounds and InjuriesBone Diseases, MetabolicBone DiseasesMusculoskeletal DiseasesMetabolic DiseasesNutritional and Metabolic DiseasesGlucose Metabolism DisordersEndocrine System DiseasesHyperinsulinism

Results Point of Contact

Title
Dr. Richard K. Shields
Organization
University of Iowa Department of Physical Therapy and Rehabilitation Science

Study Officials

  • Richard K Shields, PhD, PT

    University of Iowa

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
No
Restrictive Agreement
No

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NON RANDOMIZED
Masking
NONE
Purpose
BASIC SCIENCE
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR INVESTIGATOR
PI Title
Professor

Study Record Dates

First Submitted

December 2, 2015

First Posted

December 4, 2015

Study Start

May 1, 2015

Primary Completion

November 18, 2021

Study Completion

November 18, 2021

Last Updated

November 4, 2022

Results First Posted

November 4, 2022

Record last verified: 2022-08

Data Sharing

IPD Sharing
Will not share

Locations