Journal article
Dose Estimation and Surveillance of Mechanical Loading Interventions for Bone Loss After Spinal Cord Injury
Physical therapy, Vol.88(3), pp.387-396
03/01/2008
DOI: 10.2522/ptj.20070224
PMCID: PMC3270311
PMID: 18202080
Abstract
Background and Purpose The interpretation of the results of previous anti-osteoporosis interventions after spinal cord injury (SCI) is undermined by incomplete information about the intervention dose or patient adherence to dose requirements. Rehabilitation research as a whole traditionally has struggled with these same issues. The purpose of this case report is to offer proof of the concepts that careful dose selection and surveillance of patient adherence should be integral components in rehabilitation interventions. Case Description A 21-year-old man with T4 complete paraplegia (7 weeks) enrolled in a unilateral soleus muscle electrical stimulation protocol. Compressive loads applied to the tibia approximated 1.4 times body weight. Over 4.8 years of home-based training, data logging software provided surveillance of adherence. Soleus muscle torque and fatigue index adaptations to training as well as bone mineral density (BMD) adaptations in the distal tibia were measured. Outcomes The patient performed nearly 8,000 soleus muscle contractions per month, with occasional fluctuations. Adherence tracking permitted intervention when adherence fell below acceptable values. The soleus muscle torque and fatigue index increased rapidly in response to training. The BMD of the untrained tibia declined approximately 14% per year. The BMD of the trained tibia declined only approximately 7% per year. The BMD was preferentially preserved in the posterior half of the tibia; this region experienced only a 2.6% annual decline. Discussion Early administration of a load intervention, careful estimation of the loading dose, and detailed surveillance of patient adherence aided in the interpretation of a patient's adaptations to a mechanical load protocol. These concepts possess wider applicability to rehabilitation research and should be emphasized in future physical therapy investigations.
Details
- Title: Subtitle
- Dose Estimation and Surveillance of Mechanical Loading Interventions for Bone Loss After Spinal Cord Injury
- Creators
- Shauna Dudley-Javoroski - S Dudley-Javoroski, PT, MPT, is Research Physical Therapist and a PhD candidate, Graduate Program in Physical Therapy and Rehabilitation Science, University of Iowa, Iowa City, IowaRichard K Shields - RK Shields, PT, PhD, FAPTA, is Professor and Director, Carver College of Medicine–Physical Therapy and Rehabilitation Science, 1–252 Medical Education Building, University of Iowa, Iowa City, IA 52242 (USA)
- Resource Type
- Journal article
- Publication Details
- Physical therapy, Vol.88(3), pp.387-396
- DOI
- 10.2522/ptj.20070224
- PMID
- 18202080
- PMCID
- PMC3270311
- NLM abbreviation
- Phys Ther
- ISSN
- 0031-9023
- eISSN
- 1538-6724
- Language
- English
- Date published
- 03/01/2008
- Academic Unit
- Orthopedics and Rehabilitation; Physical Therapy and Rehabilitation Science
- Record Identifier
- 9984047611602771
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