Emmanuel John - Academia.edu (original) (raw)
Papers by Emmanuel John
Journal of Physical Therapy Science
Determine if female adolescent soccer players with a history of concussion, impaired K-D scores, ... more Determine if female adolescent soccer players with a history of concussion, impaired K-D scores, and pre-season subjective complaints of neck pain, dizziness, and headache were predisposed to additional risk of musculoskeletal or concussive injury during 10-weeks of competitive play. [Participants and Methods] Twenty-three female high school soccer athletes provided concussion history and reported pre-season subjective complaints. K-D testing was performed pre and postseason. During the 10-week season, all injuries, preventing participation in practice or game, were recorded. [Results] Six reported a history of concussion. Of those six, three injuries were reported, including two concussions and a hamstring strain. Baseline K-D scores were worse in athletes that had two or more pre-season subjective factors compared to those that did not have any. Moderate positive correlations were found between a history of concussion and the number of injuries and a history of concussion and K-D post-test scores. [Conclusion] Findings indicate that pre-season subjective factors of neck pain, dizziness and headache, history of concussion, and K-D potentially increased injury risk. Combining pre-season metrics both at baseline and during the course of the season may assist in better injury risk screening in-season or indicate suboptimal function due to cumulative effects.
International Journal of Engineering Applied Sciences and Technology
The need for assessing construction materials is becoming a priority within the construction indu... more The need for assessing construction materials is becoming a priority within the construction industry. This trend is necessitated by the high diminishing rate of construction materials, pressing demand on existing quarries, rising cost of aggregates and failures of civil structure all over the country. This research is aimed at assessing the suitability of hand crushed aggregates for use in construction as compared to the old tradition of mechanically crushed aggregates. A one-sample t-Test was carried out to test for the significant difference in the means in comparison to the standard guidelines. From findings of the t-Test conducted to test the hypothesis, there was a significant difference in the specific gravity of hand crushed (HC) aggregates (p = 0.001) for sample sites X, Y and Z. Furthermore, there was also a significant difference in the water absorption of mechanically crushed (MC) and hand crushed (HC) aggregates for sample site Z (p = 0.001 and p= 0.025). However, there was no significant difference in the specific gravity of MC for sample sites X, Y and Z with p values of 0.107, 0.539 and 0.188, respectively. Although some of the results shows conformity to the stipulated building standards of an average specific gravity 2.7 and average water absorption rate of 0.6%, it is still imperative to reassess their suitability before use in constructions. These aggregates cost less and widely used within the study area, hence becomes imperative to evaluate their suitability before use in any construction project.
The International Journal of Business & Management
Journal of Physical Therapy Education
... Dr Joseph Nwankwo (chair of NAU's PT program), Jason Gooding (senior IT speciali... more ... Dr Joseph Nwankwo (chair of NAU's PT program), Jason Gooding (senior IT specialist from UM-Flint), and Professor Ifeoma Beatrice Enweani. ... students, consult with the program administrators and faculty about the pros and cons of learning management systems, ana-lyze ...
Human resources for health, Jun 12, 2017
Sub-Saharan Africa (SSA) countries are faced with the challenge of educating a critical mass of o... more Sub-Saharan Africa (SSA) countries are faced with the challenge of educating a critical mass of occupational therapists (OTs) and physiotherapists (PTs) to meet the growing demand for health and rehabilitation services. The World Federation of Occupational Therapy (WFOT) and World Confederation of Physical Therapy (WCPT) have argued for the need of graduate-level training for OTs and PTs for decades. However, very few studies have been conducted to determine the availability of OT and PT training programs and practitioners in SSA countries. Initial data were collected and compiled from an extensive literature search conducted using MEDLINE and PubMed to examine the availability of OT and PT education and training programs in SSA countries. Additional data were collected, compiled, and collated from academic institutions, ministries of health, health professions associations, and licensing authorities in SSA countries. Secondary data were also collected from the websites of organizat...
Journal of neurosurgery, Jan 28, 2017
OBJECTIVE Neural interface technology may enable the development of novel therapies to treat neur... more OBJECTIVE Neural interface technology may enable the development of novel therapies to treat neurological conditions, including motor prostheses for spinal cord injury. Intracranial neural interfaces currently require a craniotomy to achieve implantation and may result in chronic tissue inflammation. Novel approaches are required that achieve less invasive implantation methods while maintaining high spatial resolution. An endovascular stent electrode array avoids direct brain trauma and is able to record electrocorticography in local cortical tissue from within the venous vasculature. The motor area in sheep runs in a parasagittal plane immediately adjacent to the superior sagittal sinus (SSS). The authors aimed to develop a sheep model of cerebral venography that would enable validation of an endovascular neural interface. METHODS Cerebral catheter venography was performed in 39 consecutive sheep. Contrast-enhanced MRI of the brain was performed on 13 animals. Multiple telescoping ...
International Letters of Social and Humanistic Sciences, 2016
This paper examines the relationship between stock market index and macroeconomic policies (Fisca... more This paper examines the relationship between stock market index and macroeconomic policies (Fiscal and Monetary) on Iran's economy using quarterly data in the period 1999-2013. This study employed cointegration test and vector autoregressive models (VAR) to examine relationships between the stock market index and the macroeconomic variables. The empirical results reveal that a positive money shock can increase stocks return. According to impulse responses, the government expenditure had a slight impact on stocks return in the short term. But the government expenditure has a positive effect on exchange index in long run. Also the effect of taxes on the stock's price index is negative, so that it reaches its maximum level after the third lag and then alleviates. The GDP shock has positive effect on the stock's price index. Increase in production level leads to increase in earnings and profitability, leading to a positive response from stocks index. Therefore the results sh...
Journal of Complex Networks, 2016
Network sparsification methods play an important role in modern network analysis when fast estima... more Network sparsification methods play an important role in modern network analysis when fast estimation of computationally expensive properties (such as the diameter, centrality indices, and paths) is required. We propose a method of network sparsification that preserves a wide range of structural properties. Depending on the analysis goals, the method allows to distinguish between local and global range edges that can be filtered out during the sparsification. First we rank edges by their algebraic distances and then we sample them. We also introduce a multilevel framework for sparsification that can be used to control the sparsification process at various coarse-grained resolutions. Based primarily on the matrix-vector multiplications, our method is easily parallelized for different architectures.
Medicine & Science in Sports & Exercise, 2015
Spinal Cord Series and Cases, 2016
The purpose of this case-control study was to examine potential agonist-antagonist fatigue imbala... more The purpose of this case-control study was to examine potential agonist-antagonist fatigue imbalance during wheelchair rugby activity. A 16-channel NORAXON electromyography (EMG) system 1400A with telemetry was used to assess EMG activity in a 39-year-old male with a C6 complete spinal cord injury (American Spinal Injury Association Impairment Scale (AIS) A), 17.5 years post injury. Mean amplitude and median frequency were determined for push-phase agonists (anterior deltoid and pectoralis major) and antagonist (posterior deltoid) across four training sessions at a community fitness and Paralympic training facility. Unlike continuous wheelchair pushing, acute muscle imbalances between agonists and antagonists (that is, push and recovery muscles) were not demonstrated. Wheelchair sports such as rugby may reduce risk of shoulder pain and overuse injury due to intermittent activity rather than continuous pushing. The current study is one of the first to document sport fatigue through electromyography during intermittent, live play rather than clinical conditions (that is, continuous pushing).
10Th Wcpt Africa Region Congress, Jul 21, 2014
Circulation Cardiovascular Quality and Outcomes, May 1, 2013
Journal of the National Medical Association
The purposes of this study were to: (1) identify the interrater and intrarater reliability of sys... more The purposes of this study were to: (1) identify the interrater and intrarater reliability of systolic blood pressures using a stethoscope and Doppler to determine an ankle-brachial index (ABI), and (2) to determine the correlation between the 2 methods. Peripheral arterial disease (PAD) affects approximately 8 to 12 million people in the United States, and nearly half of those with this disease are asymptomatic. Early detection and prompt treatment of PAD will improve health outcomes. It is important that clinicians perform tests that determine the presence of PAD. Two individual raters trained in ABI procedure measured the systolic blood pressures of 20 individuals' upper and lower extremities. Standard ABI measurement protocols were observed. Raters individually recorded the systolic blood pressures of each extremity using a stethoscope and a Doppler, for a total of 640 independent measures. Interrater reliability of Doppler measurements to determine SBP at the ankle was very...
Interoperability of geological data receives considerable attention in recent years and different... more Interoperability of geological data receives considerable attention in recent years and different types of ontologies (i.e., an ontology spectrum) have been studied and applied. There are several key challenges faced by current and potential practices of an ontology spectrum in the field of geology: (1) Modeling and encoding of ontologies; (2) Multilinguality of geological data and ontologies; (3) Flexibility and usefulness of ontology-based applications; (4) Mediation and evolution of geological data and ontologies. This paper reviews our works addressing these challenges in the past three years, concludes findings and proposes directions for future works.
Topics in Geriatric Rehabilitation, 2013
ABSTRACT An ankle-brachial index (ABI) is determined by comparing blood pressures of the extremit... more ABSTRACT An ankle-brachial index (ABI) is determined by comparing blood pressures of the extremities. No study that compared the blood pressure measurements obtained by standard or vascular cuffs was found. This study investigated the reliability of ABI measures using standard and vascular pressure cuffs. Two raters measured 480 systolic blood pressures of 10 healthy participants using standard and vascular cuffs. Intrarater reliability for standard cuffs was weak (intraclass correlation coefficient [ICC] = 0.42–0.63) and moderate to strong for vascular cuffs (ICC = 0.70–0.87). Interrater reliability was moderate to strong for both standard and vascular cuffs (ICC = 0.83–0.96). Reliability of ABI measures with vascular cuffs was moderate to strong. The results of this study suggest and recommend the vascular cuff for accurate measures to determine reliable ABI values. If a standard cuff is used, the blood pressure should be measured twice and averaged for the ABI calculation.
Medicine & Science in Sports & Exercise, 2007
Medicine & Science in Sports & Exercise, 2009
The ability of older adults to perform activities of daily living (ADL) declines with age. One po... more The ability of older adults to perform activities of daily living (ADL) declines with age. One possible reason could be that older adults require substantially greater effort than younger adults to perform similar ADL. This study examined the effects of age on the biomechanics of muscular effort in healthy adults during isometric torque production tasks. Thirty healthy adults [15 younger (8 males, 7 females, aged 29.3 +/- 5.53 yr) and 15 older (8 males, 7 females, aged 70.8 +/- 3.6 yr)] participated in this study. After the determination of maximal voluntary contraction (MVC) strength for both isometric elbow flexion and extension tasks using a dynamometer, the participants then produced isometric elbow flexion and extension joint torques that corresponded to effort levels of 1, 3, 5, 7, and 9 on a modified Borg-CR10 scale. The 10 conditions (2 tasks x 5 effort levels) were presented in random order. A three-way repeated-measures ANOVA was used to assess the effects of age, task, and effort level on absolute (N.m) and relative (% MVC) elbow joint torques. Older adults required significantly greater muscular effort to accomplish equivalent motor task performance as compared with younger adults for effort levels of 3, 5, 7, and 9 (P < 0.001). In addition, older adults demonstrated significantly greater muscular effort scaling error than younger subjects across all effort levels (P < 0.0001). There was an age-related increase in muscular effort during isometric elbow flexion and extension torque production tasks in healthy adults. Errors in muscular effort scaling exist, which increased as a function of both intensity (effort level) of motor task and age.
Medicine & Science in Sports & Exercise, 2009
Methods . Twenty healthy young adults aged 20-40 (mean 29.3 ? 5.4 SD), nineteen healthy older adu... more Methods . Twenty healthy young adults aged 20-40 (mean 29.3 ? 5.4 SD), nineteen healthy older adults aged 65-75 (70.8 ? 3.6), and four chronic stroke survivors (CSS) aged 55-65 (62.5 ? 3.7) were seated in an upright position on a Biodex? isokinetic dynamometer such that ...
Journal of Physical Therapy Science
Determine if female adolescent soccer players with a history of concussion, impaired K-D scores, ... more Determine if female adolescent soccer players with a history of concussion, impaired K-D scores, and pre-season subjective complaints of neck pain, dizziness, and headache were predisposed to additional risk of musculoskeletal or concussive injury during 10-weeks of competitive play. [Participants and Methods] Twenty-three female high school soccer athletes provided concussion history and reported pre-season subjective complaints. K-D testing was performed pre and postseason. During the 10-week season, all injuries, preventing participation in practice or game, were recorded. [Results] Six reported a history of concussion. Of those six, three injuries were reported, including two concussions and a hamstring strain. Baseline K-D scores were worse in athletes that had two or more pre-season subjective factors compared to those that did not have any. Moderate positive correlations were found between a history of concussion and the number of injuries and a history of concussion and K-D post-test scores. [Conclusion] Findings indicate that pre-season subjective factors of neck pain, dizziness and headache, history of concussion, and K-D potentially increased injury risk. Combining pre-season metrics both at baseline and during the course of the season may assist in better injury risk screening in-season or indicate suboptimal function due to cumulative effects.
International Journal of Engineering Applied Sciences and Technology
The need for assessing construction materials is becoming a priority within the construction indu... more The need for assessing construction materials is becoming a priority within the construction industry. This trend is necessitated by the high diminishing rate of construction materials, pressing demand on existing quarries, rising cost of aggregates and failures of civil structure all over the country. This research is aimed at assessing the suitability of hand crushed aggregates for use in construction as compared to the old tradition of mechanically crushed aggregates. A one-sample t-Test was carried out to test for the significant difference in the means in comparison to the standard guidelines. From findings of the t-Test conducted to test the hypothesis, there was a significant difference in the specific gravity of hand crushed (HC) aggregates (p = 0.001) for sample sites X, Y and Z. Furthermore, there was also a significant difference in the water absorption of mechanically crushed (MC) and hand crushed (HC) aggregates for sample site Z (p = 0.001 and p= 0.025). However, there was no significant difference in the specific gravity of MC for sample sites X, Y and Z with p values of 0.107, 0.539 and 0.188, respectively. Although some of the results shows conformity to the stipulated building standards of an average specific gravity 2.7 and average water absorption rate of 0.6%, it is still imperative to reassess their suitability before use in constructions. These aggregates cost less and widely used within the study area, hence becomes imperative to evaluate their suitability before use in any construction project.
The International Journal of Business & Management
Journal of Physical Therapy Education
... Dr Joseph Nwankwo (chair of NAU's PT program), Jason Gooding (senior IT speciali... more ... Dr Joseph Nwankwo (chair of NAU's PT program), Jason Gooding (senior IT specialist from UM-Flint), and Professor Ifeoma Beatrice Enweani. ... students, consult with the program administrators and faculty about the pros and cons of learning management systems, ana-lyze ...
Human resources for health, Jun 12, 2017
Sub-Saharan Africa (SSA) countries are faced with the challenge of educating a critical mass of o... more Sub-Saharan Africa (SSA) countries are faced with the challenge of educating a critical mass of occupational therapists (OTs) and physiotherapists (PTs) to meet the growing demand for health and rehabilitation services. The World Federation of Occupational Therapy (WFOT) and World Confederation of Physical Therapy (WCPT) have argued for the need of graduate-level training for OTs and PTs for decades. However, very few studies have been conducted to determine the availability of OT and PT training programs and practitioners in SSA countries. Initial data were collected and compiled from an extensive literature search conducted using MEDLINE and PubMed to examine the availability of OT and PT education and training programs in SSA countries. Additional data were collected, compiled, and collated from academic institutions, ministries of health, health professions associations, and licensing authorities in SSA countries. Secondary data were also collected from the websites of organizat...
Journal of neurosurgery, Jan 28, 2017
OBJECTIVE Neural interface technology may enable the development of novel therapies to treat neur... more OBJECTIVE Neural interface technology may enable the development of novel therapies to treat neurological conditions, including motor prostheses for spinal cord injury. Intracranial neural interfaces currently require a craniotomy to achieve implantation and may result in chronic tissue inflammation. Novel approaches are required that achieve less invasive implantation methods while maintaining high spatial resolution. An endovascular stent electrode array avoids direct brain trauma and is able to record electrocorticography in local cortical tissue from within the venous vasculature. The motor area in sheep runs in a parasagittal plane immediately adjacent to the superior sagittal sinus (SSS). The authors aimed to develop a sheep model of cerebral venography that would enable validation of an endovascular neural interface. METHODS Cerebral catheter venography was performed in 39 consecutive sheep. Contrast-enhanced MRI of the brain was performed on 13 animals. Multiple telescoping ...
International Letters of Social and Humanistic Sciences, 2016
This paper examines the relationship between stock market index and macroeconomic policies (Fisca... more This paper examines the relationship between stock market index and macroeconomic policies (Fiscal and Monetary) on Iran's economy using quarterly data in the period 1999-2013. This study employed cointegration test and vector autoregressive models (VAR) to examine relationships between the stock market index and the macroeconomic variables. The empirical results reveal that a positive money shock can increase stocks return. According to impulse responses, the government expenditure had a slight impact on stocks return in the short term. But the government expenditure has a positive effect on exchange index in long run. Also the effect of taxes on the stock's price index is negative, so that it reaches its maximum level after the third lag and then alleviates. The GDP shock has positive effect on the stock's price index. Increase in production level leads to increase in earnings and profitability, leading to a positive response from stocks index. Therefore the results sh...
Journal of Complex Networks, 2016
Network sparsification methods play an important role in modern network analysis when fast estima... more Network sparsification methods play an important role in modern network analysis when fast estimation of computationally expensive properties (such as the diameter, centrality indices, and paths) is required. We propose a method of network sparsification that preserves a wide range of structural properties. Depending on the analysis goals, the method allows to distinguish between local and global range edges that can be filtered out during the sparsification. First we rank edges by their algebraic distances and then we sample them. We also introduce a multilevel framework for sparsification that can be used to control the sparsification process at various coarse-grained resolutions. Based primarily on the matrix-vector multiplications, our method is easily parallelized for different architectures.
Medicine & Science in Sports & Exercise, 2015
Spinal Cord Series and Cases, 2016
The purpose of this case-control study was to examine potential agonist-antagonist fatigue imbala... more The purpose of this case-control study was to examine potential agonist-antagonist fatigue imbalance during wheelchair rugby activity. A 16-channel NORAXON electromyography (EMG) system 1400A with telemetry was used to assess EMG activity in a 39-year-old male with a C6 complete spinal cord injury (American Spinal Injury Association Impairment Scale (AIS) A), 17.5 years post injury. Mean amplitude and median frequency were determined for push-phase agonists (anterior deltoid and pectoralis major) and antagonist (posterior deltoid) across four training sessions at a community fitness and Paralympic training facility. Unlike continuous wheelchair pushing, acute muscle imbalances between agonists and antagonists (that is, push and recovery muscles) were not demonstrated. Wheelchair sports such as rugby may reduce risk of shoulder pain and overuse injury due to intermittent activity rather than continuous pushing. The current study is one of the first to document sport fatigue through electromyography during intermittent, live play rather than clinical conditions (that is, continuous pushing).
10Th Wcpt Africa Region Congress, Jul 21, 2014
Circulation Cardiovascular Quality and Outcomes, May 1, 2013
Journal of the National Medical Association
The purposes of this study were to: (1) identify the interrater and intrarater reliability of sys... more The purposes of this study were to: (1) identify the interrater and intrarater reliability of systolic blood pressures using a stethoscope and Doppler to determine an ankle-brachial index (ABI), and (2) to determine the correlation between the 2 methods. Peripheral arterial disease (PAD) affects approximately 8 to 12 million people in the United States, and nearly half of those with this disease are asymptomatic. Early detection and prompt treatment of PAD will improve health outcomes. It is important that clinicians perform tests that determine the presence of PAD. Two individual raters trained in ABI procedure measured the systolic blood pressures of 20 individuals' upper and lower extremities. Standard ABI measurement protocols were observed. Raters individually recorded the systolic blood pressures of each extremity using a stethoscope and a Doppler, for a total of 640 independent measures. Interrater reliability of Doppler measurements to determine SBP at the ankle was very...
Interoperability of geological data receives considerable attention in recent years and different... more Interoperability of geological data receives considerable attention in recent years and different types of ontologies (i.e., an ontology spectrum) have been studied and applied. There are several key challenges faced by current and potential practices of an ontology spectrum in the field of geology: (1) Modeling and encoding of ontologies; (2) Multilinguality of geological data and ontologies; (3) Flexibility and usefulness of ontology-based applications; (4) Mediation and evolution of geological data and ontologies. This paper reviews our works addressing these challenges in the past three years, concludes findings and proposes directions for future works.
Topics in Geriatric Rehabilitation, 2013
ABSTRACT An ankle-brachial index (ABI) is determined by comparing blood pressures of the extremit... more ABSTRACT An ankle-brachial index (ABI) is determined by comparing blood pressures of the extremities. No study that compared the blood pressure measurements obtained by standard or vascular cuffs was found. This study investigated the reliability of ABI measures using standard and vascular pressure cuffs. Two raters measured 480 systolic blood pressures of 10 healthy participants using standard and vascular cuffs. Intrarater reliability for standard cuffs was weak (intraclass correlation coefficient [ICC] = 0.42–0.63) and moderate to strong for vascular cuffs (ICC = 0.70–0.87). Interrater reliability was moderate to strong for both standard and vascular cuffs (ICC = 0.83–0.96). Reliability of ABI measures with vascular cuffs was moderate to strong. The results of this study suggest and recommend the vascular cuff for accurate measures to determine reliable ABI values. If a standard cuff is used, the blood pressure should be measured twice and averaged for the ABI calculation.
Medicine & Science in Sports & Exercise, 2007
Medicine & Science in Sports & Exercise, 2009
The ability of older adults to perform activities of daily living (ADL) declines with age. One po... more The ability of older adults to perform activities of daily living (ADL) declines with age. One possible reason could be that older adults require substantially greater effort than younger adults to perform similar ADL. This study examined the effects of age on the biomechanics of muscular effort in healthy adults during isometric torque production tasks. Thirty healthy adults [15 younger (8 males, 7 females, aged 29.3 +/- 5.53 yr) and 15 older (8 males, 7 females, aged 70.8 +/- 3.6 yr)] participated in this study. After the determination of maximal voluntary contraction (MVC) strength for both isometric elbow flexion and extension tasks using a dynamometer, the participants then produced isometric elbow flexion and extension joint torques that corresponded to effort levels of 1, 3, 5, 7, and 9 on a modified Borg-CR10 scale. The 10 conditions (2 tasks x 5 effort levels) were presented in random order. A three-way repeated-measures ANOVA was used to assess the effects of age, task, and effort level on absolute (N.m) and relative (% MVC) elbow joint torques. Older adults required significantly greater muscular effort to accomplish equivalent motor task performance as compared with younger adults for effort levels of 3, 5, 7, and 9 (P < 0.001). In addition, older adults demonstrated significantly greater muscular effort scaling error than younger subjects across all effort levels (P < 0.0001). There was an age-related increase in muscular effort during isometric elbow flexion and extension torque production tasks in healthy adults. Errors in muscular effort scaling exist, which increased as a function of both intensity (effort level) of motor task and age.
Medicine & Science in Sports & Exercise, 2009
Methods . Twenty healthy young adults aged 20-40 (mean 29.3 ? 5.4 SD), nineteen healthy older adu... more Methods . Twenty healthy young adults aged 20-40 (mean 29.3 ? 5.4 SD), nineteen healthy older adults aged 65-75 (70.8 ? 3.6), and four chronic stroke survivors (CSS) aged 55-65 (62.5 ? 3.7) were seated in an upright position on a Biodex? isokinetic dynamometer such that ...