The timing and amplitude of the muscular activity of the arms preceding impact in a forward fall is modulated with fall velocity

Article Neurosciences

Age-related changes in protective arm reaction kinematics, kinetics, and neuromuscular activation during evoked forward falls

James Borrelli et al.

Summary: This study found that older adults exhibited a smaller maximum vertical ground reaction force and less elbow extension at impact during falls, potentially increasing the risk of increased body impact.

HUMAN MOVEMENT SCIENCE (2022)

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Article Neurosciences

Age-related increases in reaction time result from slower preparation, not delayed initiation

Robert M. Hardwick et al.

Summary: Recent research has shown that healthy younger adults can prepare accurate responses faster than their voluntary reaction times, but a seemingly unnecessary delay occurs before responding. This study examined the effects of aging on movement preparation, movement initiation, and the delay between them. The results indicate that with age, both movement initiation in voluntary reaction time and movement preparation in forced reaction time take longer. However, the time required to prepare accurate movements is shorter than the self-selected initiation times, and the delay between movement preparation and initiation remains consistent across the lifespan.

JOURNAL OF NEUROPHYSIOLOGY (2022)

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Article Ergonomics

Differences in fall-related emergency departments visits with and without an Injury, 2018

Briana L. Moreland et al.

Summary: Falls have a significant impact on the health of older adults, with the majority of fall-related emergency department visits resulting in injuries. Females and older adults in rural areas have a higher percentage of fall-related injuries. Emergency department visits without a coded injury are more likely to result in hospitalization compared to visits with a coded injury.

JOURNAL OF SAFETY RESEARCH (2022)

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Article Neurosciences

Can we use peripheral vision to create a visuospatial map for compensatory reach-to-grasp reactions?

Laura Williams et al.

Summary: Perturbation-induced reach-to-grasp reactions depend on vision to capture environmental features, and previous research has proposed the use of an intrinsic visuospatial map to reduce motor response delays. This study aimed to determine if compensatory reach-to-grasp reactions could be successfully executed while relying on a visuospatial map acquired using peripheral vision. The findings suggest that peripheral vision contributes to spatially locating targets and controlling rapid compensatory reach-to-grasp reactions.

EXPERIMENTAL BRAIN RESEARCH (2022)

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Article Multidisciplinary Sciences

Test-retest reliability of the FALL FIT system for assessing and training protective arm reactions in response to a forward fall

James Borrelli et al.

Summary: The use of hands and arms in fall prevention is essential. This study assessed the test-retest reliability of fall dynamics and protective arm response using the FALL FIT simulator, and found good to excellent reliability for most measures. FALL FIT can simulate various fall dynamics and is important for understanding protective arm reactions.

METHODSX (2022)

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Article Neurosciences

Does functional performance and upper body strength predict upper extremity reaction and movement time in older women?

Hayley S. Legg et al.

Summary: The study revealed a relationship between upper body strength and faster reaction and movement time, with an increase in strength potentially leading to quicker responses. This suggests a potential avenue for future interventions that could impact forward fall landing and reduce injury risk.

HUMAN MOVEMENT SCIENCE (2021)

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Article Biophysics

Protective arm movements are modulated with fall height

James Borrelli et al.

JOURNAL OF BIOMECHANICS (2020)

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Article Biophysics

Extending the center of pressure to incorporate handhold forces: Derivation and sample application

J. Borrelli et al.

JOURNAL OF BIOMECHANICS (2020)

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Article Gerontology

Aging With Vision Loss: A Framework for Assessing the Impact of Visual Impairment on Older Adults

Bonnielin K. Swenor et al.

GERONTOLOGIST (2020)

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Article Biophysics

Aging effects of motor prediction on protective balance and startle responses to sudden drop perturbations

Ozell Sanders et al.

JOURNAL OF BIOMECHANICS (2019)

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Article Neurosciences

Aging changes in protective balance and startle responses to sudden drop perturbations

Ozell Sanders et al.

JOURNAL OF NEUROPHYSIOLOGY (2019)

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Article Biophysics

Effects of aging on hip abductor-adductor neuromuscular and mechanical performance during the weight transfer phase of lateral protective stepping

Mario Inacio et al.

JOURNAL OF BIOMECHANICS (2019)

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Article Engineering, Biomedical

Biomechanical and physiological age differences in a simulated forward fall on outstretched hands in women

Lauren J. Lattimer et al.

CLINICAL BIOMECHANICS (2018)

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Article Neurosciences

Influence of handrail height and fall direction on center of mass control and the physical demands of reach-to-grasp balance recovery reactions

Vicki Komisar et al.

GAIT & POSTURE (2018)

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Article Geriatrics & Gerontology

Female Age-Related Differences in Biomechanics and Muscle Activity During Descents on the Outstretched Arms

Lauren J. Lattimer et al.

JOURNAL OF AGING AND PHYSICAL ACTIVITY (2017)

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Article Psychology, Multidisciplinary

Repeated Measures Correlation

Jonathan Z. Bakdash et al.

FRONTIERS IN PSYCHOLOGY (2017)

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Article Multidisciplinary Sciences

Falls and Fall-Related Injuries among Community-Dwelling Adults in the United States

Santosh K. Verma et al.

PLOS ONE (2016)

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Article Biophysics

Kinematic analysis of video-captured falls experienced by older adults in long-term care

W. J. Choi et al.

JOURNAL OF BIOMECHANICS (2015)

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Article Neurosciences

Protective balance and startle responses to sudden freefall in standing humans

Ozell P. Sanders et al.

NEUROSCIENCE LETTERS (2015)

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Article Engineering, Biomedical

Effects of Age, Gender and Level of Co-contraction on Elbow and Shoulder Rotational Stiffness and Damping in the Impulsively End-Loaded Upper Extremity

Yunju Lee et al.

ANNALS OF BIOMEDICAL ENGINEERING (2015)

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Article Geriatrics & Gerontology

Age-related changes in the rate of muscle activation and rapid force characteristics

Brennan J. Thompson et al.

AGE (2014)

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Article Public, Environmental & Occupational Health

Trends in fall-related injuries among older adults treated in emergency departments in the USA

Carlos H. Orces et al.

INJURY PREVENTION (2014)

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Article Biophysics

Can sacral marker approximate center of mass during gait and slip-fall recovery among community-dwelling older adults?

Feng Yang et al.

JOURNAL OF BIOMECHANICS (2014)

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Article Medicine, General & Internal

Prevalence of and factors associated with head impact during falls in older adults in long-term care

Rebecca Schonnop et al.

CANADIAN MEDICAL ASSOCIATION JOURNAL (2013)

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Article Neurosciences

Kinematics, kinetics and muscle activation patterns of the upper extremity during simulated forward falls

Timothy A. Burkhart et al.

JOURNAL OF ELECTROMYOGRAPHY AND KINESIOLOGY (2013)

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Article Engineering, Biomedical

The Effects of Gender, Level of Co-Contraction, and Initial Angle on Elbow Extensor Muscle Stiffness and Damping Under a Step Increase in Elbow Flexion Moment

Yunju Lee et al.

ANNALS OF BIOMEDICAL ENGINEERING (2011)

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Article Orthopedics

Fractures of the distal radius in women aged 50 to 75 years: natural course of patient-reported outcome, wrist motion and grip strength between 1 year and 2-4 years after fracture

E. Brogren et al.

JOURNAL OF HAND SURGERY-EUROPEAN VOLUME (2011)

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Article Sport Sciences

Visuo-motor delay, information-movement coupling, and expertise in ball sports

Cyrille Le Runigo et al.

JOURNAL OF SPORTS SCIENCES (2010)

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Review Behavioral Sciences

Motor control and aging: Links to age-related brain structural, functional, and biochemical effects

Rachael D. Seidler et al.

NEUROSCIENCE AND BIOBEHAVIORAL REVIEWS (2010)

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Article Neurosciences

Armed against falls: the contribution of arm movements to balance recovery after tripping

Mirjam Pijnappels et al.

EXPERIMENTAL BRAIN RESEARCH (2010)

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Article Medicine, General & Internal

Age-associated cognitive decline

Ian J. Deary et al.

BRITISH MEDICAL BULLETIN (2009)

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Article Neurosciences

Perceived timing of vestibular stimulation relative to touch, light and sound

Michael Barnett-Cowan et al.

EXPERIMENTAL BRAIN RESEARCH (2009)

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Article Biophysics

Effect of pre-impact movement strategies on the impact forces resulting from a lateral fall

J. Lo et al.

JOURNAL OF BIOMECHANICS (2008)

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Article Engineering, Biomedical

Asymmetrical ground impact of the hands after a trip-induced fall: Experimental kinematics and kinetics

Karen L. Troy et al.

CLINICAL BIOMECHANICS (2007)

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Article Biophysics

Reducing hip fracture risk during sideways falls: Evidence in young adults of the protective effects of impact to the hands and stepping

Fablo Feldman et al.

JOURNAL OF BIOMECHANICS (2007)

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Article Geriatrics & Gerontology

Control of rapid limb movements for balance recovery: age-related changes and implications for fall prevention

Brian E. Maki et al.

AGE AND AGEING (2006)

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Article Ergonomics

The injury problem among older adults: Mortality, morbidity and costs

Ann M. Dellinger et al.

JOURNAL OF SAFETY RESEARCH (2006)

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Review Medicine, General & Internal

Prevention of falls and consequent injuries in elderly people

P Kannus et al.

LANCET (2005)

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Review Neurosciences

Review of motor control mechanisms underlying impact absorption from falls

M Santello

GAIT & POSTURE (2005)

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Article Engineering, Biomedical

On reducing hand impact force in forward falls: results of a brief intervention in young males

J Lo et al.

CLINICAL BIOMECHANICS (2003)

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Review Biophysics

Fall-related upper body injuries in the older adult: a review of the biomechanical issues

KM DeGoede et al.

JOURNAL OF BIOMECHANICS (2003)

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Article Engineering, Biomedical

Biomechanics of fall arrest using the upper extremity: age differences

KJ Kim et al.

CLINICAL BIOMECHANICS (2003)

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Article Biophysics

Biomechanical simulations of forward fall arrests: effects of upper extremity arrest strategy, gender and aging-related declines in muscle strength

KM DeGoede et al.

JOURNAL OF BIOMECHANICS (2003)

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Article Neurosciences

Visual and non-visual control of landing movements in humans

M Santello et al.

JOURNAL OF PHYSIOLOGY-LONDON (2001)

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Article Critical Care Medicine

Geriatric falls: Injury severity is high and disproportionate to mechanism

DA Sterling et al.

JOURNAL OF TRAUMA-INJURY INFECTION AND CRITICAL CARE (2001)

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Article Biophysics

Impact severity in self-initiated sits and falls associates with center-of-gravity excursion during descent

SN Robinovitch et al.

JOURNAL OF BIOMECHANICS (2000)

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The timing and amplitude of the muscular activity of the arms preceding impact in a forward fall is modulated with fall velocity

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