Variation of Spatiotemporal Parameters in School Children Carrying Different Backpack Loads
NCT ID: NCT03839836
Last Updated: 2019-08-28
Study Results
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Basic Information
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COMPLETED
NA
231 participants
INTERVENTIONAL
2018-11-02
2019-02-28
Brief Summary
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Detailed Description
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The parents were provided with information about the study, and those consenting for their children to participate, also completed a questionnaire. The children were fully informed of the procedures involved and gave assent. All procedures were in accordance with the ethical standards of the institution of University of Malaga (CEUMA 91/2016H) and with the 1964 Helsinki declaration.
Load was added to the BPs in increments of 5%, 10%, 15% and 20% of the child's body weight. Spatio-temporal parameters were measured with the OptoGait® system.
Two examiners were responsible for the system software and collecting data. General information, including height and weight, were recorded. To measure gait parameters, the protocol used for the Optogait reliability testing was used. This involved the children walking on a walkway at a comfortable speed, repeating this walk three times and calculating the mean speed. Prior to data collection, the children performed one familiarization trial for five minutes. Children were asked to walk naturally, facing forward, with their hands out of pockets; wearing light, comfortable clothes, with the BP placed correctly. As the children started walking, the researchers selected the foot of the first step inside the bars, in the Optogait software. After being instructed to 'walk slowly at a comfortable speed', the children walked from a point two metres in front of the bar and stopped at a point two metres behind the last bar, to minimize effects of acceleration and deceleration
Conditions
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Study Design
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NON_RANDOMIZED
SINGLE_GROUP
HEALTH_SERVICES_RESEARCH
DOUBLE
A convenience sample of children was approached The potential recruits are asked to attend a screening appointment Children were asked to walk naturally, facing forward, with their hands out of pockets; wearing light, comfortable clothes, with the BP placed correctly with 5 different weights inside the backpack.
Study Groups
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Baseline
Children between six and 12 years, no pain in the lower limb and back at the time of examination using a backpack without the child's body weight, the spatio-temporal parameters are measured with the OptoGait® system
No interventions assigned to this group
5% child's body weight
Children between six and 12 years, no pain in the lower limb and back at the time of examination using a backpack load was added to the BPs 5%, of the child's body weight, the spatio-temporal parameters are measured with the OptoGait® system
Backpack child's body weight
Children are asked to walk naturally, facing forward, with their hands out of pockets; wearing light, comfortable clothes, with the BP placed correctly. As the children start walking, the researchers select the foot of the first step inside the bars, in the Optogait software. After being instructed to 'walk slowly at a comfortable speed', the children walk from a point two metres in front of the bar and stop at a point two metres behind the last bar, to minimize effects of acceleration and deceleration . A three-minute interval occurs between individual assessments to transmit the data, as well as to prepare for the next assessment. Only steps in the sensor areas are included in the analysis. Recording six to eight strides is reported as sufficient to obtain representative data for unimpaired adults. Subsequently, five experimental conditions are measured: without BP, BP loads of 5%, 10%, 15%, and 20% of body weight. The order of these loaded conditions are random.
10% child's body weight
Children between six and 12 years, no pain in the lower limb and back at the time of examination using a backpack load was added to the BPs 10%, of the child's body weight, the spatio-temporal parameters are measured with the OptoGait® system
Backpack child's body weight
Children are asked to walk naturally, facing forward, with their hands out of pockets; wearing light, comfortable clothes, with the BP placed correctly. As the children start walking, the researchers select the foot of the first step inside the bars, in the Optogait software. After being instructed to 'walk slowly at a comfortable speed', the children walk from a point two metres in front of the bar and stop at a point two metres behind the last bar, to minimize effects of acceleration and deceleration . A three-minute interval occurs between individual assessments to transmit the data, as well as to prepare for the next assessment. Only steps in the sensor areas are included in the analysis. Recording six to eight strides is reported as sufficient to obtain representative data for unimpaired adults. Subsequently, five experimental conditions are measured: without BP, BP loads of 5%, 10%, 15%, and 20% of body weight. The order of these loaded conditions are random.
15% child's body weight
Children between six and 12 years, no pain in the lower limb and back at the time of examination using a backpack load was added to the BPs 15%, of the child's body weight, the spatio-temporal parameters are measured with the OptoGait® system
Backpack child's body weight
Children are asked to walk naturally, facing forward, with their hands out of pockets; wearing light, comfortable clothes, with the BP placed correctly. As the children start walking, the researchers select the foot of the first step inside the bars, in the Optogait software. After being instructed to 'walk slowly at a comfortable speed', the children walk from a point two metres in front of the bar and stop at a point two metres behind the last bar, to minimize effects of acceleration and deceleration . A three-minute interval occurs between individual assessments to transmit the data, as well as to prepare for the next assessment. Only steps in the sensor areas are included in the analysis. Recording six to eight strides is reported as sufficient to obtain representative data for unimpaired adults. Subsequently, five experimental conditions are measured: without BP, BP loads of 5%, 10%, 15%, and 20% of body weight. The order of these loaded conditions are random.
20% child's body weight
Children between six and 12 years, no pain in the lower limb and back at the time of examination using a backpack load was added to the BPs 20%, of the child's body weight, the spatio-temporal parameters are measured with the OptoGait® system
Backpack child's body weight
Children are asked to walk naturally, facing forward, with their hands out of pockets; wearing light, comfortable clothes, with the BP placed correctly. As the children start walking, the researchers select the foot of the first step inside the bars, in the Optogait software. After being instructed to 'walk slowly at a comfortable speed', the children walk from a point two metres in front of the bar and stop at a point two metres behind the last bar, to minimize effects of acceleration and deceleration . A three-minute interval occurs between individual assessments to transmit the data, as well as to prepare for the next assessment. Only steps in the sensor areas are included in the analysis. Recording six to eight strides is reported as sufficient to obtain representative data for unimpaired adults. Subsequently, five experimental conditions are measured: without BP, BP loads of 5%, 10%, 15%, and 20% of body weight. The order of these loaded conditions are random.
Interventions
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Backpack child's body weight
Children are asked to walk naturally, facing forward, with their hands out of pockets; wearing light, comfortable clothes, with the BP placed correctly. As the children start walking, the researchers select the foot of the first step inside the bars, in the Optogait software. After being instructed to 'walk slowly at a comfortable speed', the children walk from a point two metres in front of the bar and stop at a point two metres behind the last bar, to minimize effects of acceleration and deceleration . A three-minute interval occurs between individual assessments to transmit the data, as well as to prepare for the next assessment. Only steps in the sensor areas are included in the analysis. Recording six to eight strides is reported as sufficient to obtain representative data for unimpaired adults. Subsequently, five experimental conditions are measured: without BP, BP loads of 5%, 10%, 15%, and 20% of body weight. The order of these loaded conditions are random.
Eligibility Criteria
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Inclusion Criteria
* The inclusion criteria were: age between six and 12 years, no pain in the lower limb and back at the time of examination.
Exclusion Criteria:
* The exclusion criteria were: recent injury to the lower limb and back, alterations in the foot bones, congenital structural changes to the ankle, flatfoot associated with cerebral palsy, surgical treatment of foot or lower leg, or any genetic, neurologic or muscular conditions.
6 Years
12 Years
ALL
Yes
Sponsors
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University of Malaga
OTHER
Responsible Party
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Gabriel Gijon-Nogueron
Assistant Professor
Locations
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Gabriel Gijon Nogueron
Armilla, , Spain
Countries
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References
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Paez-Moguer J, Montes-Alguacil J, Garcia-Paya I, Medina-Alcantara M, Evans AM, Gijon-Nogueron G. Variation of spatiotemporal parameters in school children carrying different backpack loads: a cross sectional study. Sci Rep. 2019 Aug 21;9(1):12192. doi: 10.1038/s41598-019-48675-3.
Other Identifiers
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UMalagaHS
Identifier Type: -
Identifier Source: org_study_id
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