Neuro-degenerative disease often affects gait and mobility. To understand better the pathophysiology of these diseases and to improve our ability to measure responses to therapeutic interventions, it may be helpful to quantify gait dynamics accurately. The records in this database are from patients with Parkinson's disease (n = 15), Huntington's disease (n = 20), or amyotrophic lateral sclerosis (n = 13). Records from 16 healthy control subjects are also included here.
The raw data were obtained using force-sensitive resistors, with the output roughly proportional to the force under the foot. Stride-to-stride measures of footfall contact times were derived from these signals, as illustrated below. (Click here for a PostScript version of this figure.)
![[Examples of Gait Time Series]](example-ts.png)
Each of the 64 records is identified by the name of the subject group (hunt, park, als, or control) followed by an arbitrary ID number. The four files associated with each record have names beginning with the record name, and suffixes indicating the type and contents of the file:
Suffix | Contents |
---|---|
.hea | Header (text) |
.let | Left foot signal (binary) |
.rit | Right foot signal (binary) |
.ts | Derived time series (text) |
Within the time series (.ts) files, the contents are:
Column | Contents |
---|---|
1 | Elapsed Time (sec) |
2 | Left Stride Interval (sec) |
3 | Right Stride Interval (sec) |
4 | Left Swing Interval (sec) |
5 | Right Swing Interval (sec) |
6 | Left Swing Interval (% of stride) |
7 | Right Swing Interval (% of stride) |
8 | Left Stance Interval (sec) |
9 | Right Stance Interval (sec) |
10 | Left Stance Interval (% of stride) |
11 | Right Stance Interval (% of stride) |
12 | Double Support Interval (sec) |
13 | Double Support Interval (% of stride) |
Please note that these time series have not been filtered.
A separate file (subject-description.txt, a tab-delimited text file) includes clinical information for each subject, including age, gender, height, weight, walking speed, and a measure of disease severity or duration. For the subjects with Parkinson's disease, this is the Hohn and Yahr score (a higher score indicates more advanced disease). For the subjects with Huntington's disease, this is the total functional capacity measure (a lower score indicates more advanced functional impairment). For the subjects with amyotrophic lateral sclerosis, the number here is the time in months since the diagnosis of the disease. For the control subjects, an arbitrary 0 is used as a place holder.
Questions for study
We have done some initial analyses of these data sets. Much, however, is still unknown. For example: Are the dynamics of the sub-phases of the stride (e.g., stance and swing) identical to that of the stride itself? What is the effect of disease on gait asymmetry? Are stride dynamics nonlinear? Does this change with disease?
References
We have reported the association between disease and the dynamics of the stride time. For more information about our analyses of these data files, please see:
- Hausdorff JM, Lertratanakul A, Cudkowicz ME, Peterson AL, Kaliton D, Goldberger AL. Dynamic markers of altered gait rhythm in amyotrophic lateral sclerosis. J Applied Physiology; 88:2045-2053, 2000.
- Hausdorff JM, Mitchell SL, Firtion R, Peng CK, Cudkowicz ME, Wei JY, Goldberger AL. Altered fractal dynamics of gait: reduced stride-interval correlations with aging and Huntington's disease. J Applied Physiology; 82:262-269, 1997.
Address for correspondence: jhausdor@caregroup.harvard.edu
Name Last modified Size Description
Parent Directory -
DOI 21-Sep-2015 14:00 19
MD5SUMS 17-Nov-2012 18:24 14K
SHA1SUMS 17-Nov-2012 18:24 17K
SHA256SUMS 17-Nov-2012 18:24 24K
TEST.shtml 23-Sep-2016 16:44 9.5K
example-ts.png 21-Dec-2000 13:39 32K
example-ts.ps 07-Nov-2000 14:13 33K
local.css 28-Oct-2015 19:40 3.1K
subject-description.txt 07-Nov-2000 14:08 2.3K clinical information
als1.hea 17-Nov-2012 18:04 115 header file
als1.hea- 07-Nov-2000 14:52 56 header file
als10.hea 17-Nov-2012 18:04 116 header file
als10.hea- 07-Nov-2000 14:52 59 header file
als11.hea 17-Nov-2012 18:04 115 header file
als11.hea- 07-Nov-2000 14:52 59 header file
als12.hea 17-Nov-2012 18:04 119 header file
als12.hea- 07-Nov-2000 14:52 59 header file
als13.hea 17-Nov-2012 18:04 117 header file
als13.hea- 07-Nov-2000 14:52 59 header file
als2.hea 17-Nov-2012 18:04 111 header file
als2.hea- 07-Nov-2000 14:52 56 header file
als3.hea 17-Nov-2012 18:04 114 header file
als3.hea- 07-Nov-2000 14:52 56 header file
als4.hea 17-Nov-2012 18:04 111 header file
als4.hea- 07-Nov-2000 14:52 56 header file
als5.hea 17-Nov-2012 18:04 113 header file
als5.hea- 07-Nov-2000 14:52 56 header file
als6.hea 17-Nov-2012 18:04 112 header file
als6.hea- 24-May-2004 22:56 56 header file
als7.hea 17-Nov-2012 18:04 116 header file
als7.hea- 07-Nov-2000 14:52 56 header file
als8.hea 17-Nov-2012 18:04 115 header file
als8.hea- 07-Nov-2000 14:52 53 header file
als9.hea 17-Nov-2012 18:04 114 header file
als9.hea- 07-Nov-2000 14:52 56 header file
control1.hea 17-Nov-2012 18:04 125 header file
control1.hea- 07-Nov-2000 14:53 68 header file
control10.hea 17-Nov-2012 18:04 124 header file
control10.hea- 07-Nov-2000 14:53 68 header file
control11.hea 17-Nov-2012 18:04 128 header file
control11.hea- 07-Nov-2000 14:53 68 header file
control12.hea 17-Nov-2012 18:04 127 header file
control12.hea- 07-Nov-2000 14:53 68 header file
control13.hea 17-Nov-2012 18:04 124 header file
control13.hea- 07-Nov-2000 14:53 68 header file
control14.hea 17-Nov-2012 18:04 127 header file
control14.hea- 07-Nov-2000 14:54 71 header file
control15.hea 17-Nov-2012 18:04 129 header file
control15.hea- 07-Nov-2000 14:54 68 header file
control16.hea 17-Nov-2012 18:04 125 header file
control16.hea- 07-Nov-2000 14:54 71 header file
control2.hea 17-Nov-2012 18:04 126 header file
control2.hea- 07-Nov-2000 14:53 68 header file
control3.hea 17-Nov-2012 18:04 127 header file
control3.hea- 07-Nov-2000 14:53 68 header file
control4.hea 17-Nov-2012 18:04 128 header file
control4.hea- 07-Nov-2000 14:53 68 header file
control5.hea 17-Nov-2012 18:04 124 header file
control5.hea- 07-Nov-2000 14:53 68 header file
control6.hea 17-Nov-2012 18:04 123 header file
control6.hea- 07-Nov-2000 14:53 66 header file
control7.hea 17-Nov-2012 18:04 124 header file
control7.hea- 02-Mar-2008 11:31 68 header file
control8.hea 17-Nov-2012 18:04 122 header file
control8.hea- 07-Nov-2000 14:53 66 header file
control9.hea 17-Nov-2012 18:04 123 header file
control9.hea- 07-Nov-2000 14:53 68 header file
hunt1.hea 17-Nov-2012 18:04 115 header file
hunt1.hea- 07-Nov-2000 14:54 56 header file
hunt10.hea 17-Nov-2012 18:04 119 header file
hunt10.hea- 07-Nov-2000 14:54 60 header file
hunt11.hea 17-Nov-2012 18:04 118 header file
hunt11.hea- 07-Nov-2000 14:54 60 header file
hunt12.hea 17-Nov-2012 18:04 120 header file
hunt12.hea- 07-Nov-2000 14:55 59 header file
hunt13.hea 17-Nov-2012 18:04 122 header file
hunt13.hea- 07-Nov-2000 14:55 60 header file
hunt14.hea 17-Nov-2012 18:04 118 header file
hunt14.hea- 07-Nov-2000 14:55 60 header file
hunt15.hea 17-Nov-2012 18:04 117 header file
hunt15.hea- 07-Nov-2000 14:55 59 header file
hunt16.hea 17-Nov-2012 18:04 119 header file
hunt16.hea- 07-Nov-2000 14:55 59 header file
hunt17.hea 17-Nov-2012 18:05 118 header file
hunt17.hea- 07-Nov-2000 14:55 59 header file
hunt18.hea 17-Nov-2012 18:06 118 header file
hunt18.hea- 07-Nov-2000 14:55 59 header file
hunt19.hea 17-Nov-2012 18:06 118 header file
hunt19.hea- 07-Nov-2000 14:55 59 header file
hunt2.hea 17-Nov-2012 18:06 116 header file
hunt2.hea- 07-Nov-2000 14:54 56 header file
hunt20.hea 17-Nov-2012 18:06 119 header file
hunt20.hea- 07-Nov-2000 14:55 59 header file
hunt3.hea 17-Nov-2012 18:06 112 header file
hunt3.hea- 07-Nov-2000 14:54 56 header file
hunt4.hea 17-Nov-2012 18:06 119 header file
hunt4.hea- 07-Nov-2000 14:54 56 header file
hunt5.hea 17-Nov-2012 18:06 117 header file
hunt5.hea- 07-Nov-2000 14:54 59 header file
hunt6.hea 17-Nov-2012 18:06 116 header file
hunt6.hea- 07-Nov-2000 14:54 56 header file
hunt7.hea 17-Nov-2012 18:06 113 header file
hunt7.hea- 07-Nov-2000 14:54 56 header file
hunt8.hea 17-Nov-2012 18:06 117 header file
hunt8.hea- 07-Nov-2000 14:54 59 header file
hunt9.hea 17-Nov-2012 18:06 115 header file
hunt9.hea- 07-Nov-2000 14:54 57 header file
park1.hea 17-Nov-2012 18:06 115 header file
park1.hea- 07-Nov-2000 14:55 57 header file
park10.hea 17-Nov-2012 18:06 119 header file
park10.hea- 07-Nov-2000 14:56 59 header file
park11.hea 17-Nov-2012 18:06 117 header file
park11.hea- 07-Nov-2000 14:56 62 header file
park12.hea 17-Nov-2012 18:06 118 header file
park12.hea- 07-Nov-2000 14:56 59 header file
park13.hea 17-Nov-2012 18:06 119 header file
park13.hea- 07-Nov-2000 14:56 59 header file
park14.hea 17-Nov-2012 18:06 118 header file
park14.hea- 07-Nov-2000 14:56 59 header file
park15.hea 17-Nov-2012 18:06 117 header file
park15.hea- 07-Nov-2000 14:56 62 header file
park2.hea 17-Nov-2012 18:06 115 header file
park2.hea- 07-Nov-2000 14:55 57 header file
park3.hea 17-Nov-2012 18:06 116 header file
park3.hea- 07-Nov-2000 14:55 57 header file
park4.hea 17-Nov-2012 18:06 115 header file
park4.hea- 07-Nov-2000 14:55 56 header file
park5.hea 17-Nov-2012 18:06 115 header file
park5.hea- 07-Nov-2000 14:55 56 header file
park6.hea 17-Nov-2012 18:06 115 header file
park6.hea- 07-Nov-2000 14:55 56 header file
park7.hea 17-Nov-2012 18:06 113 header file
park7.hea- 07-Nov-2000 14:56 59 header file
park8.hea 17-Nov-2012 18:06 118 header file
park8.hea- 07-Nov-2000 14:56 56 header file
park9.hea 17-Nov-2012 18:06 116 header file
park9.hea- 07-Nov-2000 14:56 56 header file
als1.let 17-Nov-2012 18:04 132K left foot signal
als10.let 17-Nov-2012 18:04 132K left foot signal
als11.let 17-Nov-2012 18:04 132K left foot signal
als12.let 17-Nov-2012 18:04 132K left foot signal
als13.let 17-Nov-2012 18:04 132K left foot signal
als2.let 17-Nov-2012 18:04 132K left foot signal
als3.let 17-Nov-2012 18:04 132K left foot signal
als4.let 17-Nov-2012 18:04 132K left foot signal
als5.let 17-Nov-2012 18:04 132K left foot signal
als6.let 17-Nov-2012 18:04 132K left foot signal
als7.let 17-Nov-2012 18:04 132K left foot signal
als8.let 17-Nov-2012 18:04 132K left foot signal
als9.let 17-Nov-2012 18:04 132K left foot signal
control1.let 17-Nov-2012 18:04 132K left foot signal
control10.let 17-Nov-2012 18:04 132K left foot signal
control11.let 17-Nov-2012 18:04 132K left foot signal
control12.let 17-Nov-2012 18:04 132K left foot signal
control13.let 17-Nov-2012 18:04 132K left foot signal
control14.let 17-Nov-2012 18:04 132K left foot signal
control15.let 17-Nov-2012 18:04 132K left foot signal
control16.let 17-Nov-2012 18:04 132K left foot signal
control2.let 17-Nov-2012 18:04 132K left foot signal
control3.let 17-Nov-2012 18:04 132K left foot signal
control4.let 17-Nov-2012 18:04 132K left foot signal
control5.let 17-Nov-2012 18:04 132K left foot signal
control6.let 17-Nov-2012 18:04 132K left foot signal
control7.let 17-Nov-2012 18:04 132K left foot signal
control8.let 17-Nov-2012 18:04 132K left foot signal
control9.let 17-Nov-2012 18:04 132K left foot signal
hunt1.let 17-Nov-2012 18:04 132K left foot signal
hunt10.let 17-Nov-2012 18:04 132K left foot signal
hunt11.let 17-Nov-2012 18:04 132K left foot signal
hunt12.let 17-Nov-2012 18:04 132K left foot signal
hunt13.let 17-Nov-2012 18:04 132K left foot signal
hunt14.let 17-Nov-2012 18:04 132K left foot signal
hunt15.let 17-Nov-2012 18:04 132K left foot signal
hunt16.let 17-Nov-2012 18:04 132K left foot signal
hunt17.let 17-Nov-2012 18:05 132K left foot signal
hunt18.let 17-Nov-2012 18:06 132K left foot signal
hunt19.let 17-Nov-2012 18:06 132K left foot signal
hunt2.let 17-Nov-2012 18:06 132K left foot signal
hunt20.let 17-Nov-2012 18:06 132K left foot signal
hunt3.let 17-Nov-2012 18:06 132K left foot signal
hunt4.let 17-Nov-2012 18:06 132K left foot signal
hunt5.let 17-Nov-2012 18:06 132K left foot signal
hunt6.let 17-Nov-2012 18:06 132K left foot signal
hunt7.let 17-Nov-2012 18:06 132K left foot signal
hunt8.let 17-Nov-2012 18:06 132K left foot signal
hunt9.let 17-Nov-2012 18:06 132K left foot signal
park1.let 17-Nov-2012 18:06 132K left foot signal
park10.let 17-Nov-2012 18:06 132K left foot signal
park11.let 17-Nov-2012 18:06 132K left foot signal
park12.let 17-Nov-2012 18:06 132K left foot signal
park13.let 17-Nov-2012 18:06 132K left foot signal
park14.let 17-Nov-2012 18:06 132K left foot signal
park15.let 17-Nov-2012 18:06 132K left foot signal
park2.let 17-Nov-2012 18:06 132K left foot signal
park3.let 17-Nov-2012 18:06 132K left foot signal
park4.let 17-Nov-2012 18:06 132K left foot signal
park5.let 17-Nov-2012 18:06 132K left foot signal
park6.let 17-Nov-2012 18:06 132K left foot signal
park7.let 17-Nov-2012 18:06 132K left foot signal
park8.let 17-Nov-2012 18:06 132K left foot signal
park9.let 17-Nov-2012 18:06 132K left foot signal
RECORDS 21-Dec-2000 12:52 447 list of record names
als1.rit 17-Nov-2012 18:04 132K right foot signal
als10.rit 17-Nov-2012 18:04 132K right foot signal
als11.rit 17-Nov-2012 18:04 132K right foot signal
als12.rit 17-Nov-2012 18:04 132K right foot signal
als13.rit 17-Nov-2012 18:04 132K right foot signal
als2.rit 17-Nov-2012 18:04 132K right foot signal
als3.rit 17-Nov-2012 18:04 132K right foot signal
als4.rit 17-Nov-2012 18:04 132K right foot signal
als5.rit 17-Nov-2012 18:04 132K right foot signal
als6.rit 17-Nov-2012 18:04 132K right foot signal
als7.rit 17-Nov-2012 18:04 132K right foot signal
als8.rit 17-Nov-2012 18:04 132K right foot signal
als9.rit 17-Nov-2012 18:04 132K right foot signal
control1.rit 17-Nov-2012 18:04 132K right foot signal
control10.rit 17-Nov-2012 18:04 132K right foot signal
control11.rit 17-Nov-2012 18:04 132K right foot signal
control12.rit 17-Nov-2012 18:04 132K right foot signal
control13.rit 17-Nov-2012 18:04 132K right foot signal
control14.rit 17-Nov-2012 18:04 132K right foot signal
control15.rit 17-Nov-2012 18:04 132K right foot signal
control16.rit 17-Nov-2012 18:04 132K right foot signal
control2.rit 17-Nov-2012 18:04 132K right foot signal
control3.rit 17-Nov-2012 18:04 132K right foot signal
control4.rit 17-Nov-2012 18:04 132K right foot signal
control5.rit 17-Nov-2012 18:04 132K right foot signal
control6.rit 17-Nov-2012 18:04 132K right foot signal
control7.rit 17-Nov-2012 18:04 132K right foot signal
control8.rit 17-Nov-2012 18:04 132K right foot signal
control9.rit 17-Nov-2012 18:04 132K right foot signal
hunt1.rit 17-Nov-2012 18:04 132K right foot signal
hunt10.rit 17-Nov-2012 18:04 132K right foot signal
hunt11.rit 17-Nov-2012 18:04 132K right foot signal
hunt12.rit 17-Nov-2012 18:04 132K right foot signal
hunt13.rit 17-Nov-2012 18:04 132K right foot signal
hunt14.rit 17-Nov-2012 18:04 132K right foot signal
hunt15.rit 17-Nov-2012 18:04 132K right foot signal
hunt16.rit 17-Nov-2012 18:04 132K right foot signal
hunt17.rit 17-Nov-2012 18:05 132K right foot signal
hunt18.rit 17-Nov-2012 18:06 132K right foot signal
hunt19.rit 17-Nov-2012 18:06 132K right foot signal
hunt2.rit 17-Nov-2012 18:06 132K right foot signal
hunt20.rit 17-Nov-2012 18:06 132K right foot signal
hunt3.rit 17-Nov-2012 18:06 132K right foot signal
hunt4.rit 17-Nov-2012 18:06 132K right foot signal
hunt5.rit 17-Nov-2012 18:06 132K right foot signal
hunt6.rit 17-Nov-2012 18:06 132K right foot signal
hunt7.rit 17-Nov-2012 18:06 132K right foot signal
hunt8.rit 17-Nov-2012 18:06 132K right foot signal
hunt9.rit 17-Nov-2012 18:06 132K right foot signal
park1.rit 17-Nov-2012 18:06 132K right foot signal
park10.rit 17-Nov-2012 18:06 132K right foot signal
park11.rit 17-Nov-2012 18:06 132K right foot signal
park12.rit 17-Nov-2012 18:06 132K right foot signal
park13.rit 17-Nov-2012 18:06 132K right foot signal
park14.rit 17-Nov-2012 18:06 132K right foot signal
park15.rit 17-Nov-2012 18:06 132K right foot signal
park2.rit 17-Nov-2012 18:06 132K right foot signal
park3.rit 17-Nov-2012 18:06 132K right foot signal
park4.rit 17-Nov-2012 18:06 132K right foot signal
park5.rit 17-Nov-2012 18:06 132K right foot signal
park6.rit 17-Nov-2012 18:06 132K right foot signal
park7.rit 17-Nov-2012 18:06 132K right foot signal
park8.rit 17-Nov-2012 18:06 132K right foot signal
park9.rit 17-Nov-2012 18:06 132K right foot signal
als1.ts 07-Nov-2000 14:52 17K time series
als10.ts 07-Nov-2000 14:52 21K time series
als11.ts 07-Nov-2000 14:52 20K time series
als12.ts 07-Nov-2000 14:52 10K time series
als13.ts 07-Nov-2000 14:52 16K time series
als2.ts 07-Nov-2000 14:52 21K time series
als3.ts 07-Nov-2000 14:52 18K time series
als4.ts 07-Nov-2000 14:52 12K time series
als5.ts 07-Nov-2000 14:52 18K time series
als6.ts 07-Nov-2000 14:52 15K time series
als7.ts 07-Nov-2000 14:52 14K time series
als8.ts 07-Nov-2000 14:52 20K time series
als9.ts 07-Nov-2000 14:52 18K time series
control1.ts 07-Nov-2000 14:53 22K time series
control10.ts 07-Nov-2000 14:53 24K time series
control11.ts 07-Nov-2000 14:53 23K time series
control12.ts 07-Nov-2000 14:53 21K time series
control13.ts 07-Nov-2000 14:53 22K time series
control14.ts 07-Nov-2000 14:54 21K time series
control15.ts 07-Nov-2000 14:54 17K time series
control16.ts 07-Nov-2000 14:54 21K time series
control2.ts 07-Nov-2000 14:53 21K time series
control3.ts 07-Nov-2000 14:53 22K time series
control4.ts 07-Nov-2000 14:53 23K time series
control5.ts 07-Nov-2000 14:53 21K time series
control6.ts 07-Nov-2000 14:53 23K time series
control7.ts 07-Nov-2000 14:53 22K time series
control8.ts 07-Nov-2000 14:53 22K time series
control9.ts 07-Nov-2000 14:53 24K time series
hunt1.ts 07-Nov-2000 14:54 27K time series
hunt10.ts 07-Nov-2000 14:54 19K time series
hunt11.ts 07-Nov-2000 14:54 20K time series
hunt12.ts 07-Nov-2000 14:55 22K time series
hunt13.ts 07-Nov-2000 14:55 14K time series
hunt14.ts 07-Nov-2000 14:55 22K time series
hunt15.ts 07-Nov-2000 14:55 19K time series
hunt16.ts 07-Nov-2000 14:55 16K time series
hunt17.ts 07-Nov-2000 14:55 21K time series
hunt18.ts 07-Nov-2000 14:55 22K time series
hunt19.ts 07-Nov-2000 14:55 21K time series
hunt2.ts 07-Nov-2000 14:54 19K time series
hunt20.ts 07-Nov-2000 14:55 21K time series
hunt3.ts 07-Nov-2000 14:54 20K time series
hunt4.ts 07-Nov-2000 14:54 23K time series
hunt5.ts 07-Nov-2000 14:54 23K time series
hunt6.ts 07-Nov-2000 14:54 23K time series
hunt7.ts 07-Nov-2000 14:54 20K time series
hunt8.ts 07-Nov-2000 14:54 22K time series
hunt9.ts 07-Nov-2000 14:54 23K time series
park1.ts 07-Nov-2000 14:55 21K time series
park10.ts 07-Nov-2000 14:56 25K time series
park11.ts 07-Nov-2000 14:56 20K time series
park12.ts 07-Nov-2000 14:56 21K time series
park13.ts 07-Nov-2000 14:56 21K time series
park14.ts 07-Nov-2000 14:56 24K time series
park15.ts 07-Nov-2000 14:56 20K time series
park2.ts 07-Nov-2000 14:55 24K time series
park3.ts 07-Nov-2000 14:55 20K time series
park4.ts 07-Nov-2000 14:55 19K time series
park5.ts 07-Nov-2000 14:55 23K time series
park6.ts 07-Nov-2000 14:55 23K time series
park7.ts 07-Nov-2000 14:56 19K time series
park8.ts 07-Nov-2000 14:56 17K time series
park9.ts 07-Nov-2000 14:56 19K time series
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