Article
Geriatrics & Gerontology
David W. Russ, Nathan P. Wages, Leatha A. Clark, Julie A. Suhr, Brian C. Clark
Summary: There is increasing interest in using motor function tests to identify risk of cognitive impairment in older adults. This study found that manual dexterity showed stronger associations with Trail Making Test A and B than grip strength. Older adults with mismatched motor function performed worse on the TMT-B test, and dexterity may have more promise for identifying increased risk of cognitive impairment.
AGING CLINICAL AND EXPERIMENTAL RESEARCH
(2022)
Article
Clinical Neurology
Shekar S. Dukkipati, Sarah J. Walker, Michael P. Trevarrow, Morgan T. Busboom, Max J. Kurz
Summary: The objective of this study was to determine if post-activation depression of the spinal H-reflexes is altered in adults with CP and connected with altered upper extremity function. The results revealed that adults with CP had reduced post-activation depression of the FCR H-reflex, which was connected to lower manual dexterity and weaker grip forces.
CLINICAL NEUROPHYSIOLOGY
(2023)
Article
Engineering, Industrial
Jazmin Cruz, Mario Garcia, Cecilia Garza, Patricia R. DeLucia, James Yang
Summary: The study investigated the effects of block surface, shape, age, and sex on hand dexterity during the movement of heavy blocks in the Box and Block Test (BBT). Results indicated that repetition and shape had significant effects on the BBT score, suggesting that shape should take priority over other factors when designing tools to improve user handling.
Article
Neurosciences
Ross Parry, Fabrice R. Sarlegna, Nathanael Jarrasse, Agnes Roby-Brami
Summary: This study aimed to investigate the effects of sensory neuropathy on grip force regulation and object orientation during functional manipulation tasks. Results showed that the patient with somatosensory loss utilized different modes of anticipatory control according to task constraints, and responses to perturbations were mediated by alternative afferent information. The loss of somatosensory feedback impaired control of object orientation, while temporal organization variations in functional tasks reflected strategies to mitigate object instability.
JOURNAL OF NEUROPHYSIOLOGY
(2021)
Article
Engineering, Industrial
Yumeng Yao, Subhash Rakheja, Pierre Marcotte
Summary: This study proposes a methodology for evaluating the integrated performance of vibration reducing gloves, taking into account manual dexterity, vibration transmission, and grip strength preservation. The results showed higher weightings for fingers vibration response in high-frequency spectra, while palm vibration and muscles' activity had higher weightings in low-frequency spectra. Gel2, air2, and hybrid gloves made of air bladder or viscoelastic gels demonstrated superior integrated performance across high- and low-frequency vibration spectra. Fabric and rubber gloves showed the best integrated performance for multiple tasks with low-frequency vibration spectrum.
INTERNATIONAL JOURNAL OF INDUSTRIAL ERGONOMICS
(2021)
Article
Chemistry, Multidisciplinary
Mingzhong Wu, Sheng Jia, Zhihong Lin
Summary: This research conducted experimental studies on the vibration response in the wrist area using a hand-transmitted vibration test platform and comprehensively analyzed the influence of wrist posture, arm posture, grip force, and thrust force on the vibration transmissibility. The results showed that wrist posture has a significant effect on vibration transmissibility.
APPLIED SCIENCES-BASEL
(2022)
Article
Ergonomics
Emir Ibrahim Isik, Koray Soygun, Oyku Ceren Kahraman, Elif Figen Kocak
Summary: This study showed that the menstrual cycle has an impact on the psychological state and hand skills of female students in the Dental Faculty, but not on touch and grip strength.
INTERNATIONAL JOURNAL OF OCCUPATIONAL SAFETY AND ERGONOMICS
(2022)
Article
Medicine, General & Internal
Bekir Guclu, Baki Umut Tugay, Fatih Ozden, Esra Ergun Kesli, Cemal Onur Noyan
Summary: This study compared the grip strength, pinch strength, and manual dexterity of individuals with and without cannabis use disorder. The results showed that individuals with cannabis use disorder had lower grip strength and 2PP grip strength, longer duration on the 9HPT test, and different results on the MMDT insertion and rotation tests. Grip strength was correlated with MMDT tests, 9HPT, and MHQ overall hand function.
IRISH JOURNAL OF MEDICAL SCIENCE
(2023)
Article
Medicine, General & Internal
Reickly D. N. Constansia, Judith E. K. R. Hentzen, Carlijn Buis, Joost M. Klaase, Vincent E. de Meijer, Mark Meerdink
Summary: This study compared hand grip strength and manual dexterity of surgeons from different subspecialties. The results showed that surgeons from different subspecialties had similar hand grip strength and manual dexterity. Male surgeons had stronger hand grip strength, while female surgeons exhibited better manual dexterity. Manual dexterity was also correlated with age, with younger surgeons achieving better scores.
ANNALS OF MEDICINE AND SURGERY
(2022)
Article
Engineering, Industrial
S. Nolasco, C. M. Amaro, L. Roseiro, M. A. Castro, A. M. Amaro
Summary: This study compared the impact of different racket stiffness on hand-arm vibrations, finding that less rigid rackets lead to higher vibrations, with smash movements using a forehand grip being the most critical.
INTERNATIONAL JOURNAL OF INDUSTRIAL ERGONOMICS
(2022)
Article
Pediatrics
Erik Ising, Linnea Ekman, Helena Elding Larsson, Lars B. Dahlin
Summary: This study examined the vibrotactile sense of children and adolescents with type 1 diabetes over time, finding improvement in vibrotactile perception thresholds at low frequencies on the foot, indicating potential fluctuation in vibrotactile sense over time.
Article
Environmental Sciences
Josefa Angelie Revilla, Ilham Priadythama, Ping Yeap Loh, Satoshi Muraki
Summary: This study investigated the effects of different handle-grip designs on vibration impact, grip exertion, and posture in the upper limb. Circular-smooth handle resulted in lower transmitted vibrations and less discomfort, while shape and surface profile affected finger sensitivity, comfort, and muscular activity differently. Forearm muscle activities were unaffected. Circular handles had the least negative impacts, while elliptic handles had the most negative impacts due to hand-handle contact stress and grip effort. Implementing a hard-solid handle with less contact area, less grip effort, and even texture is recommended.
JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL HYGIENE
(2022)
Article
Engineering, Biomedical
Melissa Kopruluoglu, Ilknur Naz, Dilek Solmaz, Servet Akar
Summary: This study compared hand functions and wrist joint position sense in patients with psoriatic arthritis, rheumatoid arthritis, and healthy controls. The results showed that patients with psoriatic arthritis had worse hand functional outcomes and higher position errors than healthy controls. Additionally, patients with psoriatic arthritis were found to be similar to those with rheumatoid arthritis in all variables.
CLINICAL BIOMECHANICS
(2022)
Review
Orthopedics
Neha Padia, Meruna Bose, Shrutika Parab
Summary: This review summarizes the physical characteristics of the upper extremity in individuals with Down Syndrome (DS) and its influence on hand function. The findings show that individuals with DS have shortened humerus, increased trunk rotation during reaching, decreased grip and pinch strength, and poor manual dexterity. Further research is needed to correlate upper extremity anthropometry with overall hand function in individuals with DS.
JOURNAL OF HAND THERAPY
(2023)
Article
Engineering, Manufacturing
Josefa Angelie Revilla, Ping Yeap Loh, Satoshi Muraki
Summary: This study found that using a neutral forearm posture leads to higher wrist and elbow vibration transmissibility, while gripping hard results in higher elbow transmissibility, forearm muscle activity, and grip strength reduction. The interaction between posture and force significantly influences wrist extensor activity, proximal arm discomfort, and wrist transmissibility. A neutral forearm posture is recommended for tasks involving forceful movements, while either posture can be used for less powerful movements.
HUMAN FACTORS AND ERGONOMICS IN MANUFACTURING & SERVICE INDUSTRIES
(2021)