Hand Strength Research Articles

The time course of motor and cognitive decline in older adults and their associations with brain pathologies: a multicohort study

Many studies have reported that impaired gait precedes cognitive impairment in older people. We aimed to characterise the time course of cognitive and motor decline in older individuals and the association of these declines with the pathologies of Alzheimer's disease and related dementias. This multicohort study used data from three community-based cohort studies (Religious Orders Study, Rush Memory and Aging Project, and Minority Aging Research Study, all in the USA). The inclusion criteria for all three cohorts were no clinical dementia at the time of enrolment and consent to annual clinical assessments. Eligible participants consented to post-mortem brain donation and had post-mortem pathological assessments and three or more repeated annual measures of cognition and motor functions. Clinical and post-mortem data were analysed using functional mixed-effects models. Global cognition was based on 19 neuropsychological tests, a hand strength score was based on grip and pinch strength, and a gait score was based on the number of steps and time to walk 8 feet and turn 360°. Brain pathologies of Alzheimer's disease and related dementias were assessed at autopsy. From 1994 to 2022, there were 1570 eligible cohort participants aged 65 years or older, 1303 of whom had cognitive and motor measurements and were included in the analysis. Mean age at death was 90·3 years (SD 6·3), 905 (69%) participants were female, and 398 (31%) were male. Median follow-up time was 9 years (IQR 5-11). On average, cognition was stable from 25 to 15 years before death, when cognition began to decline. By contrast, gait function and hand strength declined during the entire study. The combinations of pathologies of Alzheimer's disease and related dementias associated with cognitive and motor decline and their onsets of associations varied; only tau tangles, Parkinson's disease pathology, and macroinfarcts were associated with decline of all three phenotypes. Tau tangles were significantly associated with cognitive decline, gait function decline, and hand function decline (p<0·0001 for each); however, the association with cognitive decline persisted for more than 11 years before death, but the association with hand strength only began 3·57 years before death and the association with gait began 3·49 years before death. By contrast, the association of macroinfarcts with declining gait function began 9·25 years before death (p<0·0001) compared with 6·65 years before death (p=0·0005) for cognitive decline and 2·66 years before death (p=0·024) for decline in hand strength. Our findings suggest that average motor decline in older adults precedes cognitive decline. Macroinfarcts but not tau tangles are associated with declining gait function that precedes cognitive decline. This suggests the need for further studies to test if gait impairment is a clinical proxy for preclinical vascular cognitive impairment. National Institutes of Health.

Cold Habituation Does Not Alter Thermal Responses or Manual Dexterity During Prolonged Cold Air Exposure

Background: Habituation is a pattern of cold acclimatization characterized by attenuated cold defense responses, including a reduction in peripheral vasoconstriction and subsequent increase in skin temperature (TSk) as well as a decrease in shivering thermogenesis. Habituation is achieved through repeated reductions in TSk, rather than deep body core temperature (TC), via exposure to prolonged cold air or brief cold-water immersion. Due to improvements in TSk, enhanced manual dexterity and peripheral cold injury risk reduction are purported benefits of cold habituation. Warfighters frequently operate in cold climates and experience decrements in manual dexterity and strength. These functional losses can negatively impact mission critical tasks and training exercises; however, the effectiveness of cold habituation as a potential countermeasure to alleviate the deleterious effects of prolonged cold exposure on peripheral temperatures, thermal comfort, and hand function is unclear. Purpose: To evaluate the influence of eight consecutive cold air exposures on the thermal (TC and TSk), perceptual (thermal comfort and sensation), and functional (manual dexterity and strength) responses to cold air. We hypothesized that TSk would be higher and perceptual responses and manual dexterity improved, following repeated cold exposure. Methods: Eight young adults (6 M/1 F/1 FTM; 21 ± 2 years; %BF 24.5 ± 7.0) underwent a 2-h cold air exposure (8 °C, ~50% RH) on 8 consecutive days wearing minimal clothing. On Day 0 (baseline exposure ~1 week prior) and Days 1 and 8 of repeated exposure, TC was recorded continuously via a telemetry pill used as a rectal suppository. Extremity (Thand and Tfinger) and mean weighted TSk (MWTSk) from 8 skin sites were recorded continuously. Thermal comfort (TC) and thermal sensation (TS) were recorded at 20 min intervals. Expired gases were collected at 20 min intervals and used to calculate metabolic heat production (MHP). Manual dexterity was assessed using the Purdue Pegboard and Minnesota Manual Dexterity Test (MMDT), and hand strength were measured before and at the end of cold exposure. Results: TC changed across time ( p &lt; 0.05) but did not differ between days ( p &gt; 0.05). MWTSk, Thand, and Tfinger decreased across time ( p &lt; 0.05) but also did not differ between days ( p &gt; 0.05). Mean and minimum whole-body TS and TC were not different between days ( p &gt; 0.05). MHP increased across time ( p &lt; 0.05) but did not differ between days ( p &gt; 0.05). Purdue Pegboard, MMDT task performance, and hand strength did not differ between days ( p &gt; 0.05). Conclusion: Eight consecutive days of cold air exposure does not augment extremity skin temperature, thermal comfort, or manual performance during prolonged cold conditions. Supported by U.S. Army Medical Research and Development Command, Military Operational Medicine Research Program; author views not offcial US Army or DoD policy. This is the full abstract presented at the American Physiology Summit 2024 meeting and is only available in HTML format. There are no additional versions or additional content available for this abstract. Physiology was not involved in the peer review process.

INDIVIDUAL STRENGTH CHANGES FOLLOWING A VERY BRIEF INTERVENTION ON NATIONAL STRENGTH TRAINING GUIDELINES IN ADULTS AGED 50 - 75 YEARS

BACKGROUND There is little evidence that the public or healthcare practitioners are aware of and implementing the strength training component of the United Kingdom’s (UK) Chief Medical Officers’ physical activity guidelines in practice. Our study aimed to objectively measure strength following a very brief intervention with the strength component to determine if this practice could increase muscle strength. METHODS This was a mixed method, one-arm, pre-post six-month study. Thirty adults aged 50-75 years had hand grip (upper) isometric strength and ankle plantarflexion (lower) isometric strength measured. The average of two trials on the dominant limb were recorded. Participants were provided a physical copy of the guidelines and were asked to follow the strength recommendations. The very brief intervention (five minutes) included information on why and how to follow the strength guidelines, example exercises, along with a proven behaviour change technique (providing a journal to record training sessions). Strength was tested after six-months. RESULTS The group average indicated that there was no change in upper or lower body strength from baseline. However, when data were viewed individually, upper body strength was gained in 21 of 30 participants and lost in 9 (range: -4.5 to +6 kg). 42% of participants gained more than 2 kg in hand strength after six-months. Lower body strength was gained in 15 participants and lost in 15 (range: -12.4 to +8.65 kg). 43% of participants lost more than 2 kg. Qualitatively participants took the opportunity to ‘procure some new weights’ as they found their weights at home ‘too easy.’ Participants had a new-found realisation that ‘strength training is vital to muscle strength.’ Some mentioned that ‘strength training is now part of my life.’ On the other hand, other participants wanted more, noting that ‘there should be more publicity, information about [strength training] to the general public’ and found it unnecessarily ‘hard to find [follow up information] online.’ CONCLUSIONS In the movement to make ‘every contact count,’ a very brief intervention has been shown to raise awareness and change strength training behaviour. Healthcare practitioners should focus on lower body exercise examples alongside progression techniques to avoid rapid loss in lower body strength. Public health stakeholders need to work together to provide easily accessible strength training resources.

Short-term effects of running exercise on pinch strength, grip strength, and manual dexterity of the dominant and non-dominant hands

Occupations including first responders and military require manual tasks; therefore changes in hand strength and dexterity could affect performance. We hypothesised that pinch strength, grip strength, and dexterity will change after unloaded and loaded exercise. Twenty-four male (25 ± 4.0 yrs; 86.3 ± 9.3 kg) and 10 female (25 ± 6.0 yrs; 62.1 ± 5.9 kg) participants completed 3 conditions for 5 minutes: (1) no exercise (2) run with no load at 3.0 m/s and (3) run wearing a 9.1 kg belt. Heart rate was different among conditions (p ≤ 0.05). Pinch strength was significantly different for the non-dominant hand after exercise (p = 0.005) for male participants, but not for the dominant hand. Grip strength was significantly different for the non-dominant hand between loaded and unloaded run (p = 0.035) for male participants. Pinch and grip strength did not change after exercise for female participants. Dexterity times were not different after exercise, but female participants were significantly faster (p ≤ 0.039) than male participants.

Risk of Sarcopenia Identified by Sarc-Calf, Nutritional Status and Hand Grip Strength in Patients with Hematological Cancer.

Background: Hematological cancer patients are prone to the development of sarcopenia and impaired nutritional and functional status. SARC-CalF is a screening tool for the risk of sarcopenia that has shown good results in this population. This study aimed to identify the risk of sarcopenia by SARC-CalF and to verify its association with nutritional status and Hand Grip Strength (HGS) in patients with hematological cancer. Materials and Methods: Adult patients, of both sexes, with hematological cancer, and in outpatient care participated in the study. We measured the Hand Grip Strength of the Dominant Hand (HGSD) and the Adductor Pollicis Muscle Thickness of the Dominant Hand (APMTD). Moreover, we applied the Patient-Generated Subjective Global Assessment (PG-SGA) and SARC-CalF. Data were analyzed with SPSS® software, 22.0, with a significance level of 5.0%. Results: Fifty-one patients aged an average of 60.4 ± 15.1 years were evaluated. Of those, 58.8% were elderly, 51% female, and 80.4% declared themselves non-white. The predominant diagnosis was Mature B Lymphoid Cell Neoplasia (37.7%), and 60.8% of the patients had a diagnosis time of ≤ 3 years. PG-SGA revealed that 35.3% of the patients were malnourished; APMTD and HGSD revealed that 60.8% and 25.5% had reduced muscle strength, respectively. SARC-CalF exposed that 39.2% of the patients were at risk for sarcopenia. Significant associations were found between SARC-CalF and diagnosis time ≤ 3 years (p = 0.039), PG-SGA (p = 0.020), APMTD (p = 0.039) and HGSD (p = 0.002). After binary logistic regression adjusted for age and sex, the reduced HGSD remained associated with the risk of sarcopenia. Conclusion: SARC-CalF identified a risk of sarcopenia in 39.2% of patients. The reduced HGSD was associated with the risk of sarcopenia.

Association between sleep traits and sarcopenia-related traits: A two-sample bidirectional Mendelian randomization study.

Despite limited evidence regarding the impact of sleep quality on sarcopenia, it is widely recognized as being associated with various diseases. This study aimed to explore the causal relationship between sleep traits and sarcopenia-related traits. This study utilized a two-sample bidirectional Mendelian randomization analysis. Genetic genome-wide summary data of sleep quality indicators, including chronotype, morning wake-up time, sleep duration, daytime napping, insomnia and daytime dozing, were used. Data on sarcopenia-related traits, such as appendicular lean mass, grip strength of both hands, walking pace and waist circumference, were collected from a large cohort study. The primary method used was the inverse-variance weighted analysis. A causal association was found between chronotype and appendicular lean mass (odds ratio [OR] 1.019, 95% confidence interval [CI] 1.016-1.211, P = 0.021). Napping during the day was connected with walking pace (OR 0.879, 95% CI 0.834-0.928, P = 2.289 × 10-6) and waist circumference (OR 1.234, 95% CI 1.081-1.408, P = 0.002). Insomnia was related to lower grip strength of the right hand (OR 0.844, 95% CI 0.747-0.954, P = 0.007), left hand (OR 0.836, 95% CI 0.742-0.943, P = 0.003), as well as walking pace (OR 0.871, 95% CI 0.798-0.951, P = 0.002). Furthermore, the reverse Mendelian randomization analysis showed associations between certain sarcopenia-related traits and poor sleep quality. Some sleep traits were associated with the occurrence of sarcopenia. These findings emphasized the significance of prioritizing sleep quality as a preventive measure against sarcopenia. Geriatr Gerontol Int 2024; 24: 537-545.

32 HANDFULS: A New Clinically Feasible Measure of Hand Outcome for Children with Burns and Trauma

Abstract Introduction Fine motor dexterity is important for children's normal hand function and development. In-hand manipulation (the collection and repositioning of items in the hand) and palmar workspace (functional volume in the palm) are two aspects of hand function that often become simultaneously impaired after hand trauma or burn injury. Rehabilitation emphasizes recovery of these hand functions yet few functional outcome measures address both of these constructs and even fewer are appropriate for children. Methods This study developed a new hand outcome measure to specifically assess these constructs and tested it on 192 children between the ages of 2-21. The test, called ‘HANDFULs’, uses simple instructions and inexpensive materials (i.e. marbles) shown in Figure 1. Means, standard deviations, and 95% confidence limits were estimated for children in seven age groups. Associations between age and the HANDFULs variables were examined using one-factor ANOVA. Multiple regressions were fit to test for associations between age and the HANDFULs variables after controlling for height, hand size, and hand strength. A stepwise selection procedure was then implemented, holding age into the model, to remove otherwise non-significant variables. Test-retest reliability was tested with the Shrout Fleiss Reliability Index and significance was set at p&amp;lt; 0.05. Results Expected normal values are reported in Figure 2 for palmar workspace volume (marbles that fit in the hand) and in-hand manipulation (collection time per marble) by age group. Age (0.16 (0.06), p=0.009), hand span (0.47 (0.09), p&amp;lt; 0.0001) and hand width (0.9 (0.29), p=0.003) were significantly associated with number of marbles that fit in the hand, representing palmar workspace capacity. Although hand strength and size characteristics were tested, only age (-0.02 (0.01), p=0.001) was significantly associated with the HANDFULs score of time per marble. The Intraclass Correlation Coefficient was 0.94 demonstrating excellent test-retest reliability. Conclusions This study developed a new pediatric hand outcome measure to address hand function to address a gap related to burn and trauma recovery. The measure was tested on able-bodied, noninjured children to establish validity and reliability, provide reference values for patients with injuries by age groups, and is clinically feasible to administer. Applicability of Research to Practice Outcome test for burn injured hands.

35 The Impact of Hand Burns on Strength; An Analysis of the ACT Database

Abstract Introduction Although hand burns comprise a small TBSA percentage, they can have significant functional implications. Multiple studies show grip strength as a predictor of health and quality of life. A decrease in grip strength has been reported in multiple populations with hospital admission; however, there is limited evidence concerning how burns affect hand strength. The purpose of this study was to examine the impact of burns on grip strength, measured at hospital discharge. Methods This study is a retrospective review of data from the prospective Burn Patient Acuity Demographics, Scar Contracture and Rehabilitation Treatment Related to Patient Outcome Study (ACT). Patients had grip strength measured of both hands 3 times consecutively at discharge. Data related to grip strength of patients with burn injuries were compared to age- and sex-matched normative values. Burn characteristics, including presence of hand burns, skin grafting, and length of stay were evaluated. Results There were 307 participants in ACT; 195 (63.5%) had hand burns and met inclusion for analyses. Among those with hand burns, the majority were male (72.8%), right-hand dominant (84.1%), mean ±SD age was 42.9±17.0; LOS, 23.3±22.8 days; and TBSA, 14.5%±13.3. Among patients with hand burns, 112 (57.4%) received skin grafts to at least one hand. Expressed as the percentage of grip strength loss relative to normative data, those with a burn injury to the hand averaged -55.8±33.4%, while those with no burns to the hand averaged -25.7%±36.3%, p &amp;lt; .001. Patients with a skin graft to the hand averaged -65.8±27.2% grip strength, while those with hand burns, but no grafts averaged -36.1%±35.5%, p &amp;lt; .001. Decreased grip strength is associated with increased length of stay, r= .21, p &amp;lt; .001. Conclusions This study of hand strength in burn survivors at the time of hospital discharge corroborates previous reports regarding nosocomial strength loss but specific to the hand. Overall, patients hospitalized with burn injuries lose hand grip strength but more-so if a hand is burned and furthermore if a hand is skin grafted. Applicability of Research to Practice Understanding of the impact of burns on grip strength may help guide clinical decision making, allowing therapists treating those with burn injuries to anticipate deficits and subsequent functional impact. Expectation of a loss of grip strength in patients without burns to the hands should inform treatment planning during acute hospitalization to promote improved function and quality of life.

Effects of Short-Term Hand Tractor Operation on Upper Limb Responses of Users

ABSTRACT Objectives Continuous exposure to hand-arm vibration integrated with poor posture and forceful movements are known causes of musculoskeletal disorders (MSD). In most related studies, force and vibration levels in experimental research is controlled. This study aims to determine how actual hand tractor field operation can affect the upper limb of users. It intends to characterize upper limb muscle activation applied during actual hand tractor usage. Lastly, it determines the immediate impacts on hand strength and perceived upper limb discomfort after the operation. Methods We recruited 15 farm operators with a mean working experience of 20.1 ± 12.2 years. They were asked to operate a hand tractor on paddy fields for at most 8 minutes. Handle vibration was measured using a tri-axial accelerometer. The total unweighted vibration acceleration was computed and used to represent the handle vibration magnitude. Muscle activation was measured using surface electromyography (sEMG). Six sEMG sensors were attached to the dominant and non-dominant side of the extensor carpi radialis (ECR), bicep, and deltoid. Pre- and post-task hand strength and subjective discomfort rating were also taken. Results The total unweighted handle vibration acceleration is 17.45 ± 7.53 m/s2. This exceeds the allowable safe value. Meanwhile, the percentage of maximum voluntary contraction (% MVC) of the muscles ranged from 6% to 14% with the ECR having a significantly higher activation (p < .05) than the bicep and deltoid. The post-task grip strength of the dominant hand was lower than its pre-task value (p < .01) while that of the non-dominant side did not vary significantly. There is a modest trend of higher hand discomfort of the non-dominant side on post-task than pre-task rating (p < .10). Although, overall, the perceived discomfort ranged from none to mild discomfort. Conclusion In conclusion, the study showed an indication that the effects of vibration on humans are evident even at mild muscle exertion, with the exertion predominantly concentrated on the distal arm area clearly affecting grip strength and hand discomfort. In such cases, future recommendations can revolve around the improvement of the hand tractor handle grip to impose grip comfort and ease.

Impact of pulmonary rehabilitation on patients with different chronic respiratory diseases during hospitalization.

The impact of pulmonary rehabilitation (PR) on patients with different chronic respiratory diseases (CRDs) during hospitalization has not been thoroughly evaluated before. The objectives of the current research were to assess the effect of comprehensive PR management on inpatients' self-management skills, exercise capacity, nutrition assessment and mental health issues and explore whether impacts of PR vary in different CRDs. This retrospective study analyzed the clinical data from 272 inpatients with CRDs receiving PR management during hospitalization between October 2020 and March 2022 in Beijing Chao-Yang Hospital. Significant improvements were found in the patients' ability of daily living (ADL), dyspnea (assessed by modified medical research council dyspnea scale (MMRC)), handgrip strength, maximal inspiratory and expiratory pressure, anxiety (using the 7-item generalized anxiety disorder scale (GAD-7)) and depression (the 9-item patient health questionnaire score (PHQ-9)). There was no significant change in nutrition assessment pre-post PR management during hospitalization. The subgroup analyses were conducted on hospitalized patients with chronic obstructive pulmonary disease (COPD), bronchiectasis, asthma, interstitial lung diseases (ILDs) and other CRDs (e.g., lung cancer, diaphragm hemiparesis, obesity, etc.). The results showed that ADL, MMRC score, MIP, MEP, PHQ-9 score improved in all subgroups with CRDs. Handgrip strength of left hand was increased in COPD inpatients and anxiety was improved in all subgroups except for ILDs. Comprehensive PR management was necessary and beneficial for patients with different CRDs during hospitalization.

The Effects of Radial Longitudinal Deficiency on Long-Term Use of the Thumb in Pediatric Patients Following Index Pollicization

To assess the effect of radial longitudinal deficiency on the function of pollicized digits as determined by the Thumb Grasp and Pinch (T-GAP) assessment. We retrospectively evaluated 25 hands with thumb hypoplasia that underwent index finger pollicization. Patients were followed for an average of 10.4 years. Hands were divided by severity into two groups: no or mild radial longitudinal deficiency (RLD) (Group 1= 16) and moderate to severe RLD (Group 2= 9). We collected demographic information and completed physical examination measures, including hand strength, elbow, wrist, and hand range of motion, the Kapandji opposition score, active grasp span, and T-GAP total score. Patients with moderate to severe forms of RLD had stiffer long fingers, lower Kapandji opposition scores, and limited active and passive range of motion for elbow flexion, wrist ulnar deviation, and pollicized thumb interphalangeal flexion. They had shorter forearms, decreased active grasp span, and fewer thumb creases at the interphalangeal thumb joint. In addition, the T-GAP total score was significantly lower when comparing the two groups. Children with mild dysplasia were able to achieve 32% of age-matched normal grasp strength. Patients with more severe radial dysplasia averaged 17% less grasp strength compared with children with mild dysplasia. Patients with moderate to severe RLD also had lower T-GAP total scores and strength measurements if they had limited wrist ulnar deviation. Individuals with moderate to severe RLD have unique anatomical factors that affect outcomes after pollicization. These individuals use their thumbs for fewer activities, have weaker grasp, and retain more primitive grasp patterns compared with those who have milder forms of RLD. Prognostic IV.

The importance of advanced technologies in functional rehabilitation of the hand

Abstract: This systematic review examines groundbreaking advancements in hand rehabilitation, driven by significant progress in medical technology. Adhering to PRISMA guidelines, the review surveyed articles from various databases, emphasizing the utilization of advanced technologies for hand rehabilitation across diverse conditions such as fractures, burns, amputations, and postoperative care. Out of the 1562 studies analyzed, ten articles that met the inclusion criteria were identified. Key technologies like IMES (Implantable Myoelectric Sensor) technology are scrutinized for their potential to transform prosthetic control, providing intuitive functionality and substantial physiological hand function for individuals with limb loss. Similarly, advancements in orthotic devices like the VacoHand Orthosis are showcased for their improvements in stabilizing and aiding the healing process in wrist immobilization and rehabilitation. The integration of virtual reality (VR) emerges as a pivotal convergence point, offering supplementary therapy to enhance direction-specific improvements in wrist and forearm mobility, hand function, and work-related tasks. Additional advantages include program customization, heightened engagement through interactive approaches, and improved functional outcomes such as hand strength and range of motion. While showcasing transformative potential, the review acknowledges the need for further research through larger sample sizes, standardized methodologies and more in-depth investigations to optimize these technologies. Overall, this review underlines the remarkable advancements achieved in hand rehabilitation through technological innovations, offering hope and improved outcomes for individuals grappling with various hand-related challenges.

Analysis of the effectiveness of the developed system of physical therapy for patients with rheumatoid arthritis in terms of daily activity, health status and quality of life

Purpose. The purpose of the article is to analyze the effectiveness of the developed system of physical therapy for patients with rheumatoid arthritis based on the results of indicators of daily activity, health status and quality of life. Material &amp; Methods. 188 patients with rheumatoid arthritis were examined, including 156 women (83%) and 32 men (17%), with an average age of 44,9±7,6 years. The patients were randomly divided into a control group (n=92) and a study group (n=96). Patients in the main group were trained according to the proposed system of physical therapy, which was developed in accordance with the domains of the ICF, taking into account factors affecting the level of functional impairment, health status and quality of life (categories at the level of activity and participation). In the dynamics, a comparative assessment of functional limitations in the daily activity of the upper extremities was performed using the DASH questionnaire, health status assessment using the Stanford Health Interview, and quality of life using the EuroQol-5D-5L questionnaire. Results. In patients with rheumatoid arthritis, the initial examination revealed impaired performance of daily activities, in particular, activities requiring hand strength according to the DASH questionnaire, low self-assessment of health according to the Stanford Health Assessment Questionnaire, and significant deterioration in quality of life (EQ-5D-5L) due to the negative impact of existing functional impairments of the upper extremities. After the rehabilitation intervention, patients in both groups showed statistically significant improvement in all studied indicators: facilitation of performing household activities in everyday life, increased self-assessment of health, and improved quality of life compared to baseline data (p &lt; 0.05). However, patients in the main group showed a significantly better result than patients in the control group, which indicates the effectiveness of the proposed rehabilitation measures (p&lt;0.05). Conclusion. Significantly better differences between patients of the main and control groups were found according to the results of the studied indicators, which clearly demonstrates and confirms the effectiveness of the proposed system of physical therapy in contrast to the standard rehabilitation system.

Improved hand muscle ability after 6 weeks of squeezing a tennis ball exercise in children with spastic cerebral palsy

Children with cerebral palsy tend to be less physically fit compared to typically developing peers. This is mainly due to the lack of physical activity and exercise during their childhood. If adolescents and adults with cerebral palsy don't get enough exercise, it could result in reduced mobility and physical fitness. It is very important to start treatment for cerebral palsy when the child is young. The goal of this research was to investigate how children with spastic cerebral palsy might benefit from enhancing their hand muscle functioning by squeezing a sponge tennis ball during hand-strengthening exercises. The study implemented a true experimental design with a pre-and post-test control group. This methodology allowed for a rigorous and systematic investigation, ensuring reliable and valid results. Twelve boys between the ages of 15 and 17 who were all diagnosed with spastic cerebral palsy participated in sponge tennis ball gripping exercises as part of a program of intervention. A 30-minute workout of sponge tennis ball squeezing involves 4-6 sets of 15-20 repetitions with passive rests of 30 seconds. The prescribed regimen involves conducting the exercise four times per week for six weeks. Before and after the intervention, the Hand Grip Dynamometer was used to assess the hand muscle strength of children with spastic-type cerebral palsy. Data analysis techniques were applied using the independent samples t-test with a significant level of 5%. The results showed the average muscle strength of the right hand after the intervention between control vs. experiment (4.36 ± 1.35 kg vs. 34.16 ± 3.34 kg (p = 0.000)), the average muscle strength of the left hand after the intervention between control vs. experiment (2.31 ± 0.49 kg vs. 30.18 ± 2.08 kg (p = 0.000)). The findings of the research suggest that engaging in frequent tennis ball gripping exercises, conducted on a frequency of four sessions per week over a duration of six weeks, may yield notable improvements in the hand muscle functionality of children diagnosed with spastic-type cerebral palsy. The findings suggest that including these activities in treatment, procedures may provide significant value for persons with this particular illness.

Analysis of the Effect of Rehabilitation Nursing Intervention on Functional Recovery in Patients with Rheumatoid Arthritis

Objective: To explore and analyze the effect of rehabilitation nursing intervention on functional recovery in patients with rheumatoid arthritis. Methods: From May 2020 to May 2023, 150 patients with rheumatoid arthritis who received integrated treatment of Tibetan and Western medicine in the rheumatology department were selected as the research subjects. They were divided into the rehabilitation group and the reference group according to the double-blind mechanism, with 75 cases in each group. The rehabilitation group received rehabilitation nursing intervention and the reference group received basic nursing. The standard of living, joint function recovery, and nursing satisfaction were compared between the two groups. Results: Before the intervention, there was no statistically significant difference (P &gt; 0.05) in living standards such as physiology, mental outlook, emotional performance, and social culture between the groups. After the intervention, the standard of living such as culture, of the rehabilitation group was significantly better than that of the reference group (P &lt; 0.05). Before the intervention, there was no statistically significant difference (P &gt; 0.05) in the recovery of joint functions such as the number of joint tenderness, grip strength of both hands, duration of morning stiffness, and number of joint swelling among the groups. After the intervention, the number of joint tenderness, hand grip strength, duration of morning stiffness, number of joint swelling, and other joint function recovery in the rehabilitation group were significantly better than those in the reference group (P &lt; 0.05). The nursing satisfaction of the rehabilitation group was significantly higher than that of the reference group (P &lt; 0.05). Conclusion: Rehabilitation nursing intervention can accelerate the recovery of joint function and improve the living standard of patients with rheumatoid arthritis.

Rhizarthrosis: Resection Arthroplasty versus Resection Suspension Arthroplasty - Still the Gold Standard?

Rhizarthrosis is one of the most common arthritic changes in the hand, which has led to the development of a large number of surgical methods in recent years. In addition to the traditional resection arthroplasty with tendon suspension or interposition, if needed, thumb saddle joint prostheses are being used more and more frequently. However, these are not an option for all patients such as those with severe osteoporosis, severe nickel allergy, insufficient height of the trapezium or STT osteoarthritis. This study examined whether the traditional surgical methods continue to have their "right to exist" or whether they will be replaced by prostheses. In a retrospective study with prospective data collection, 48 hands of 45 patients diagnosed with rhizarthrosis in stages II and III according to Eaton and Littler were clinically examined 2.5 years after resection arthroplasty/resection-suspension-interposition arthroplasty using flexor carpi radialis (FCR) or abductor pollicis longus (APL) tendon strips in the years 2015-2018. The postoperative outcome was assessed using mobility, grip strength, two-point discrimination, postoperative satisfaction with regard to pain and resilience, as well as the DASH and MHQ questionnaires. There were no significant differences in surgery duration, inability to work, time to full weight-bearing, pain, satisfaction, grip strength and mobility. Regardless of the surgical method used, patients achieved an almost free range of motion in the thumb and wrist as well as age-appropriate hand strength. Pain at rest was rare; 48% were pain-free during exercise. The DASH questionnaire scored 20.2, 13.9 and 22.1 points and the MHQ scored 76.3, 79.3 and 79.4 points. Hence, the traditional surgical techniques showed good postoperative results with high patient satisfaction. "Newer procedures" such as endoprosthesis offer promising results in terms of faster regeneration times. However, this is offset by a longer surgery time and higher material costs, which means that resection arthroplasty represents a long-established procedure with a low potential for complications and a lower revision rate and should continue to be used, especially if there are relative contraindications to an endoprosthesis.

Effects of oral oligopeptide preparation and exercise intervention in older people with sarcopenia: a randomized controlled trial

BackgroundNutrition and exercise are important interventions for sarcopenia. There were few studies on oral oligopeptide nutrition preparations combined with exercise to intervene in the older people with sarcopenia. The aim of this study was to verify the effectiveness of oligopeptide nutrition preparation combined with exercise intervention on the older people with sarcopenia in community.MethodsA total of 219 subjects aged 65 years or older with sarcopenia were randomly divided into 4 groups. The nutrition group (n = 58) was given individualized nutrition education and oral oligopeptide nutrition preparation. The exercise group (n = 50) received exercise intervention. The combined group (n = 52) received both oral nutrition preparation and exercise interventions. The control group (n = 59) only received individualized nutrition education. The nutrition preparation can provide energy 185kcal and protein 24.2g per day. The exercise intervention including warm-up exercise, resistance exercise and aerobic exercise, the training time was 60min for 5 times every week. The intervention lasted for 16 weeks. Hand grip strength, gait speed, body composition and hematology parameters were measured before and after intervention.ResultsA total of 159 subjects completed the study. Compared with baseline, the left grip strength and 6-m walking speed of the subjects in nutrition group increased significantly after the intervention, and the grip strength of both hands in exercise group and combined group increased significantly. The body weight of the subjects in nutrition group, exercise group and combined group increased significantly after intervention, but no increase in soft lean mass (SLM) and skeletal muscle mass (SMM) was observed in any of the four groups. The fat-free mass (FFM) of the legs of the control group, exercise group and nutrition group decreased after intervention, and only the FFM of the legs of the combined group maintained the level before the intervention.ConclusionBoth oral peptide nutrition and exercise interventions can improve the muscle strength or function of the older people with sarcopenia. However, there were no increases in muscle mass observed.Trial registrationChiCTR, ChiCTR2100052135. Registered 20 October 2021, https://www.chictr.org.cn/showproj.html?proj=135743

Cross-education Effects of Wrist Flexor Strengthening on Grip Strength: Comparison of Eccentric and Concentric Training

Introduction: Time away from training and competition from sport injuries may lead to detrimental effects on muscle strength and endurance. The cross-education effect plays an important role in preserving strength during recovery and rehabilitation; however, the effects have been found to be inconclusive. In addition, the distinct impacts of eccentric and concentric strengthening exercises need to be explored. The objective of this study was to compare the cross-education effects of eccentric and concentric wrist flexor strengthening exercises on hand grip strength among recreational athletes. Methods: A total of 39 recreational athletes aged between 18-25 years old were randomly assigned into two groups of wrist flexor strengthening exercise: eccentric (ECC) and concentric (CON) training groups. The training period for the study was 4 weeks with 3 sessions of strengthening exercises per week. Handgrip strength was measured bilaterally, before and after the intervention using the JAMAR handgrip dynamometer. Results: Significant increases in hand grip strength were observed for the ECC and CON groups in both the trained and untrained hands following 4 weeks of training. However, the handgrip strength between the two groups in the untrained hand was not significantly different (p=0.64). The strength gain in the untrained hand was 9.8% and 10.8%, for ECC and CON groups, respectively. Conclusion: The cross-education effect was significant in improving strength in the untrained hand. There was no difference in strength gains between concentric and eccentric strength training.

Relationship Between Hand Function and Handheld Ultrasound Imaging in Inclusion Body Myositis.

Ultrasound studies in inclusion body myositis (IBM) have reported a characteristic pattern of increased echointensity in the flexor digitorum profundus (FDP) with relative sparing of the flexor carpi ulnaris (FCU). We examined the relationship between echointensity of the FDP and FCU muscles and hand strength or patient-reported outcomes (PROs). A total of 15 patients with IBM were recruited. Ultrasound images of the FDP and FCU muscles were obtained by a point-of-care ultrasound and graded using the modified Heckmatt score. Hand grip and neutral pinch strength were measured by dynamometry. PROs were assessed by the IBM Upper Extremity Function Scale. FDP and/or FCU modified Heckmatt score showed a significant relationship with grip, neutral pinch strength, and PROs. Point-of-care ultrasound examination of the forearm may serve as an extension of the neuromuscular examination. The semi-qualitative echointensity rating based on modified Heckmatt score seems to correlate well with the objective strength measurement and PROs.

The Effect of Acute Physical Fatigue on Information Processing, Pain Threshold and Muscular Performance

This study explores the multifaceted effects of acute physical fatigue on information processing, pain threshold, and muscular performance. Enrolling 28 recreational athletes, we used a high-intensity interval training (HIIT) protocol to induce fatigue and conducted pre- and post-intervention assessments. Our findings revealed significant physiological and performance adaptations following the HIIT sessions. Key observations included increased heart rate and rate of perceived exertion and an enhancement in horizontal jump performance and isometric hand strength but no significant change in cognitive processing speed. Remarkably, participants demonstrated a notable increase in pain threshold and blood lactate levels post-exercise. These results challenge traditional views of fatigue, indicating not only a physiological but also a psychological resilience to high-intensity stress. This study provides new insights into the complex interplay between physical fatigue, cognitive function, and pain perception, highlighting the comprehensive effects of HIIT on both physiological and psychological dimensions of human performance.