Biomedical subjects

Helene Henson

Publications and source records attributed to Helene Henson.

4 recordsLinked to original sources

PubMed2003

Differential responses to measures of gait performance among healthy and neurologically impaired individuals.

OBJECTIVES: To compare gait during a 5-minute walk among healthy individuals, persons with spinal cord injury (SCI), and stroke survivors and to investigate whether simultaneous measures of oxygen consumption enhance information about performance. DESIGN: Descriptive study. SETTING: Veterans Affairs medical center. PARTICIPANTS: Thirty-nine healthy individuals, 10 persons with SCI, and 20 stroke survivors. INTERVENTIONS: Participants were fitted with a portable gas analyzer and walked on a 5-m walkway for 5 minutes. MAIN OUTCOME MEASURES: Measures of walk distance, gait speed, gait energy expenditure (GEE), and gait cost were obtained, along with measures of ventilation (.Ve), ventilation and carbon dioxide production slope (.Ve . .VCo2), oxygen pulse, and heart rate. RESULTS: The SCI group (127.65+/-81.74m) walked less than the stroke survivors (148.80+/-64.3m) or the healthy group (268.90+/-35.01m) but had higher energy demands, as shown by GEE (SCI group, 13.28+/-3.23mL.kg(-1).min(-1); stroke group, 10.18+/-2.14mL.kg(-1).min(-1); healthy group, 9.61+/-1.90mL.kg(-1).min(-1)) and by gait cost (SCI group,.57+/-.40 mL.kg(-1).m(-1); stroke group,.40+/-.52mL.kg(-1).m(-1); healthy group,.18+/-.02mL.kg(-1).m(-1)). Compared with the healthy group, the stroke group had higher .Ve (stroke group, 22.34+/-5.20L/min vs healthy group, 16.11+/-3.22L/min) and .Ve . .VCo2 slope (24.22+/-8.80 vs 18.73+/-5.44, respectively). CONCLUSION: Use of metabolic assessment during the 5-minute walk was feasible and provided further information for evaluating gait performance with the subjects studied.

Adult↗

PubMed2002

Gait outcomes after acute stroke rehabilitation with supported treadmill ambulation training: a randomized controlled pilot study.

OBJECTIVE: To investigate gait outcomes with supported treadmill ambulation training (STAT) associated with regular rehabilitation in acute stroke survivors. DESIGN: Randomized controlled trial, pilot study. SETTING: Rehabilitation medicine service at a Veterans Affairs medical center. PARTICIPANTS: Seven acute stroke survivors assigned to regular intervention group and 6 patients assigned to STAT intervention. INTERVENTIONS: Regular intervention consisted of 3 hours daily of physical therapy, kinesiotherapy, and occupational therapy. STAT group received regular rehabilitation with STAT substituted for usual gait training. Participants were tested at baseline, treated for an average of 3 weeks, and retested on discharge. The analysis of covariance procedure was used to test for differences between the 2 approaches. MAIN OUTCOME MEASURES: Functional Ambulation Category Scale, gait speed, walking distance, gait energy expenditure, and gait energy cost. RESULTS: The small sample size did not generate enough power to detect significant differences in any variable. However, medium to large effect sizes of 0.7 and 1.16 standard deviation units were observed for gait energy cost and walk distance, respectively. CONCLUSIONS: This pilot study indicated that STAT is a safe, feasible, and promising intervention for acute stroke survivors. A larger trial is warranted for statistical relevance.

Analysis of Variance↗

PubMed2002

Performance-based gait tests for acute stroke patients.

OBJECTIVE: Qualitative measures may not differentiate severity of deficits after an acute or subacute stroke. The aim of this study was to contrast the utility of performance-based gait tests with qualitative measures in a sample of acute stroke patients. DESIGN: Twenty acute stroke subjects had their performance-based gait measured by gait speed, walking distance, gait energy expenditure, and gait energy cost. They were also qualitatively evaluated for cognition, functional outcomes, motor impairment, and Functional Ambulation Category. RESULTS: Strong and significant correlations were observed among performance-based gait tests. Qualitative scales indicated moderate to minimal deficits in each domain evaluated, although they were not correlated among themselves, except for Functional Ambulation Category and FIM and FIM and Mini-Mental State Exam. Functional Ambulation Category correlated with performance-based gait tests. CONCLUSIONS: Performance-based gait tests are feasible to conduct during early recovery after a stroke and allow better discrimination among the patients than qualitative measures.

Aged↗

PubMedDate not supplied

Reliability of measures of gait performance and oxygen consumption with stroke survivors.

This study assessed the reliability of gait performance with concurrent measures of oxygen consumption (VO2) in stroke survivors (SS). Nine male SS (60.00 +/- 15.08 yr) had a recent history of stroke (44.56 +/- 51.35 days since the stroke) and were receiving rehabilitation. Four had a right cerebrovascular accident (CVA), and five had a left CVA. Subjects walked without assistance, although three used a single cane to complete the test. Within 30 minutes, subjects completed two trials of a 5 min walk while walking back and forth on a 5 m walkway wearing a portable gas analyzer to collect samples of gases. The intraclass correlation coefficient (ICC) was used to assess reliability. The ICC for gait energy expenditure, walk distance, gait speed, and gait energy cost were 0.64, 0.97, 0.95, and 0.97, respectively. Assessment of gait performance with concurrent measures of VO2 is a reliable procedure with SS.

Aged↗