Características antropométricas en manos y fuerza máxima de agarre de trabajadores en una región de México: Caso de estudio hombres

2019 ◽  
pp. 1-9
Author(s):  
Mauricio López-Acosta ◽  
José Manuel Velarde-Cantú ◽  
Allán Chacara-Montes ◽  
Ernesto Ramírez-Cárdenas
Keyword(s):  
Statistical Analysis ◽  
Grip Strength ◽  
Dominant Hand ◽  
Anthropometric Measures ◽  
Working Adults ◽  
A Value ◽  
Anthropometric Characteristics ◽  
Maximum Grip Strength ◽  
Maximum Grip ◽  
Descriptive Statistical Analysis

The present article studies the anthropometric variables of the hand for a sample of 100 working adults whose ages were between 18 and 60 years, located in the State of Sonora, Mexico. In total, 26 anthropometric measures and the maximum grip strength in the dominant and non-dominant hand were considered. A descriptive statistical analysis was carried out for the measurements taken; In addition, a statistical analysis was performed to determine the correlation between the anthropometric characteristics and the maximum grip strength in the dominant hand. It was found that the age group with the strongest grip was 30-39 years with a value of 51.77 kg in the dominant hand.

Relação entre a força de preensão palmar máxima e destreza dos dedos em adultos saudáveis: Implicações para a avaliação da função manual

1969 ◽  
Vol 6 (3) ◽  
Author(s):  
Kauã C. de A. Lima ◽  
Roberto Q. Santos ◽  
Paulo Barbosa de Freitas
Keyword(s):  
Grip Strength ◽  
Grip Force ◽  
Hand Function ◽  
Strength Test ◽  
Dominant Hand ◽  
Hand Dexterity ◽  
Hand Dynamometer ◽  
Maximum Grip Strength ◽  
The Relationship ◽  
Maximum Grip

Abstract: Successful object manipulation is fundamental to maintaining an independent lifestyle and, as a result, several tests have been used to assess hand function. The maximum grip strength test is one of the most used, but its validity could be questioned because, among other aspects, we rarely use maximum grip strength (GSMax) during daily manipulation task. Thus, the main aim of this study was to examine the relationship between GSMax and the performance in a hand dexterity task. Twenty-four healthy adults (12 males) between 20 and 39 years of age performed the nine hole peg test (9-HPT) and the maximum grip strength test (Jamar® hydraulic hand dynamometer). The results revealed that males were stronger than females and dominant hand was stronger than non-dominant hand. Moreover, males and females had similar performance in the 9-HPT, but both groups had better performance when using their dominant hand compared to their non-dominant one. Finally, and most importantly, the results revealed that there was no significant relationship between GSMax and individuals’ performance in the 9-HPT. The lack of relationship between them indicates that digits dexterity assessed by 9-HPT is not dependent on maximum grip strength exerted by the hand, suggesting that the evaluation of hand function should not be only based upon the results of the maximum grip strength test. Consequently, other grip strength related measurements (e.g., rate of grip force development, grip force control) should be taken into consideration for hand function assessment.Key Words: Upper limb, evaluation, motor skill, force. 

scholarly journals Evaluation of Effect of Handle Vibration Diesel-Fueled Single-Axle Tractor on Handgrip Strength of Operators

2020 ◽  
Author(s):  
Siraj Busse ◽  
Anthony Sinclair ◽  
Diresibachew Wondimu ◽  
Daniel Reda
Keyword(s):  
Grip Strength ◽  
Handgrip Strength ◽  
Major Effect ◽  
Vibration Exposure ◽  
Dominant Hand ◽  
Average Operator ◽  
Before And After ◽  
The Mean ◽  
Maximum Grip Strength ◽  
Maximum Grip

Abstract Background: The transmission of vibration from a single-axis tractor to the human body is determined by its dynamic response; this, in turn, depends on the physical characteristics of a person's hand, the contact area, the strength of the grip, the push force of the tractor, and the position. The purpose of this work was to measure and evaluate handgrip strength and fatigue resistance for operators of a 15 horsepower single-axle tractor before and after vibration exposure. Methods: Grip strength of dominant and non-dominant hands before and after 30 minutes of tilling operations was measured and recorded. The operators performed tilling tasks with the tractor in third gear, while the vibration levels were measured at the tractor handle along with the vertical, forward, and transverse directions. Results: The average operator grip strength was 33.6 ± 2.7 and 26.3 ± 3.3 kg and the average overall grip strength declined from 39.7 to 29.31 kg, although the average fatigue strength was 27.6 and 26.5 seconds for the dominant hand before and after vibration exposure. For the non-dominant hand, the mean grip strength measured was 28.7±2.9 and 23.1±1.9 kg and the maximum grip strength was 32.79 and 26.25, while fatigue was 29.76 and 22 seconds before and after tilling respectively.Conclusion: The average reduction in grip strength suggest considerable differences in grip strength for dominant and non-dominant hands of single axle tractor operators and shows that vibration transmitted from the single axle tractor handle has a major effect on the operators.

scholarly journals Relationship between maximum grip strength and digits dexterity: Implications for hand function assessment

2011 ◽  
Vol 6 (3) ◽  
pp. 1-6
Author(s):  
Roberto Q. Santos ◽  
Kauê C. de A. Lima ◽  
Paulo B. de Freitas
Keyword(s):  
Grip Strength ◽  
Grip Force ◽  
Hand Function ◽  
Strength Test ◽  
Dominant Hand ◽  
Hand Dexterity ◽  
Hand Dynamometer ◽  
Maximum Grip Strength ◽  
Maximum Grip ◽  
Function Assessment

The main aim of this study was to examine the relationship between GS Max and the performance in a hand dexterity task. Twenty-four healthy adults (12 males) between 20 and 39 years of age performed the nine hole peg test (9-HPT) and the maximum grip strength test (Jamar ® hydraulic hand dynamometer). The results revealed that males were stronger than females and dominant hand was stronger than non-dominant hand. Moreover, males and females had similar performance in the 9-HPT, but both groups had better performance when using their dominant hand compared to their non-dominant one. Finally, and most importantly, the results revealed that there was no significant relationship between GS Max and individuals’ performance in the 9-HPT. The lack of relationship between them indicates that digits dexterity assessed by 9-HPT is not dependent on maximum grip strength exerted by the hand, suggesting that the evaluation of hand function should not be only based upon the results of the maximum grip strength test. Consequently, other grip strength related measures (e.g., rate of grip force development, grip force control) should be taken into consideration for hand function assessment.

scholarly journals Construction of Gill Net 2 and 3 Inches in The Village Kampung Nelayan of Regency Tanjung Jabung Barat

2019 ◽  
Vol 10 (1) ◽  
pp. 15-23
Author(s):  
Nelwida Nelwida ◽  
Lisna Lisna ◽  
Ren Fitriadi
Keyword(s):  
Statistical Analysis ◽  
Survey Method ◽  
Fishing Gear ◽  
Environmental Friendliness ◽  
Gill Nets ◽  
A Value ◽  
Gill Net ◽  
Dimension Analysis ◽  
The Village ◽  
Descriptive Statistical Analysis

Gill nets is the most dominant fishing gear used by fishermen in Kampung Nelayan Village. Gill nets 2 and 3 inches are widely used by traditional fishermen and modern fishermen because this tool is very practical to catch fish also friendly to the environment. This study aims to determine the construction and friendliness of fishing gear gill nets 2 and 3 inches which include the length of the net, the width of the net, shortening, buoyancy and sinking power. This research was carried out in the Village of Kampung Nelayan, Tungkal Ilir Subdistrict, Tanjung Jabung Barat District in February 2018. The method used in this research was survey method. The data obtained were analyzed using net dimension analysis and descriptive statistical analysis. Based on the results of research on the construction of 2 and 3 inches gill nets consisting of nylon monofilament made from transparent colors. The knot used by the English knot. Top rope, float, and float buoy made from polyethylene (PE) rope and ballast rope made from polypropylene (PP). The sinker made from tin and gill net 3 inch weight based on bracelet-shaped wire.Net shortening value of 2 inch is 51.75% and has a buoyancy of 3.05 kgf and a sinking power of 9.97 kgf. As well as the value of gill shortening 3 inch 50.62% and the buoyancy generated 6.22 kgf and the sinking power of 365.4 kgf. The value of environmental friendliness of 2 and 3 inch nets has a value of 31.25 and 30.75 and is classified as environmentally friendly fishing gear.

Test–retest reliability of grip strength measurement in full elbow extension to evaluate maximum grip strength

2012 ◽  
Vol 38 (2) ◽  
pp. 183-186 ◽  
Author(s):  
C. Savva ◽  
C. Karagiannis ◽  
A. Rushton
Keyword(s):  
Grip Strength ◽  
Elbow Extension ◽  
Strength Measurement ◽  
Retest Reliability ◽  
Maximum Grip Strength ◽  
Grip Strength Measurement ◽  
Test Retest Reliability ◽  
Standard Error Of Measurement ◽  
Healthy Participants ◽  
Maximum Grip

The objective of this study was to investigate the test–retest reliability of measurement of grip strength in full elbow extension. The grip strengths of 19 healthy participants were measured using the Jamar dynamometer by the same rater on two occasions with an interval of 7 days between measures. Test–retest reliability of grip strength measurement was excellent in full elbow extension and associated with low values of standard error of measurement and small variations in the differences between the two measurements in both testing sessions.

488 GRIP STRENGTH FROM MIDLIFE AS AN INDICATOR OF LATER-LIFE COGNITION AND BRAIN HEALTH: EVIDENCE FROM A BRITISH BIRTH COHORT

2021 ◽  
Vol 50 (Supplement_2) ◽  
pp. ii5-ii7
Author(s):  
Q Dercon ◽  
J Nicholas ◽  
S-N James ◽  
J Schott ◽  
M Richards
Keyword(s):  
Grip Strength ◽  
Birth Cohort ◽  
Reference Group ◽  
Later Life ◽  
White Matter Hyperintensity ◽  
Birth Cohort Study ◽  
Brain Health ◽  
Average Maximum ◽  
Maximum Grip Strength ◽  
Maximum Grip

Abstract Introduction Grip strength is an objective measure of physical function with potential predictive value for health in ageing populations. We aimed to assess whether levels and changes in grip strength from midlife predicted later-life brain health and cognition. Methods 446 participants in an ongoing British birth cohort study, the MRC National Survey of Health and Development (NSHD), had their maximum grip strength measured at ages 53, 60–64, and 69, and underwent neuroimaging as part of its neuroscience sub-study, Insight 46, at 69–71. A group-based trajectory model identified latent groups of individuals in the whole NSHD cohort with below- and above-average grip strength over time, plus a reference group. Trajectory group membership, plus standardised grip strength levels and change from age 53, were each related to MRI-derived measures of whole-brain volume (WBV) and white-matter hyperintensity volume (WMHV), plus several cognitive tests. Models were adjusted for sex, body size, head size (where appropriate), sociodemographics, and behavioural and vascular risk factors. Results Consistently below-average grip strength from midlife was associated with lower WBV and non-verbal reasoning ability at age 69–71 (e.g. low group WBV vs. reference group β = −13.38 cm^3; 95% CI = (−24.12 cm^3, −2.64 cm^3); p = 0.015). There was some accompanying evidence that above-average maximum grip strength showed a positive association with WBV, which was more pronounced in female participants (high group female WBV vs. reference group β = 18.30 cm^3; 95% CI = (1.34 cm^3, 35.29 cm^3); p = 0.034). Steeper than average declines in grip strength between 53 and 69 were additionally weakly associated with an estimated 10% higher WMHV at age 69–71 (β = 1.10, 95% CI = (1.00, 1.22); p = 0.053). Conclusion This study provides preliminary evidence that tests of maximum grip strength may have value in predicting brain health. Future work should assess how these observed differences relate to later-life negative health outcomes, and whether changes in grip strength reflect concurrent changes in brain structure and connectivity.

Grip strength feigning is hard to detect: an exploratory study

2017 ◽  
Vol 43 (2) ◽  
pp. 193-198 ◽  
Author(s):  
Jan Vollert ◽  
Carina Pasqualicchio ◽  
Mike Papenhoff ◽  
Burkhard Heitmann ◽  
Frank Müller ◽  
...  
Keyword(s):  
Grip Strength ◽  
Hand Function ◽  
Individual Case ◽  
Level Of Evidence ◽  
Rapid Exchange ◽  
Submaximal Effort ◽  
Maximum Grip Strength ◽  
Injured Patients ◽  
Healthy Participants ◽  
Maximum Grip

Detecting submaximal effort when testing grip strength is difficult. Research so far has focused on the discrimination between sincere and feigning healthy participants, whereas the clinically relevant distinction is between injured patients and feigning participants. The aim of our study was to compare rapid exchange grip and isometric grip strength testing in 41 participants feigning weakness with 39 patients with decreased hand function. Various parameters that describe grip strength were recorded and tested for differences between the groups. Only the maximum grip strength during rapid exchange grip was found to be significantly higher in feigning participants compared with patients, but this cannot be used for decision-making on an individual basis. We found no parameters that are useful for the detection of feigned weakness in an individual case. Level of evidence: III

A Possible Proximity Effect on Human Grip Strength: An Attempted Replication

1989 ◽  
Vol 68 (1) ◽  
pp. 157-158 ◽  
Author(s):  
William G. Braud
Keyword(s):  
Statistical Analysis ◽  
Grip Strength ◽  
Proximity Effect ◽  
Equal Weight ◽  
Dominant Hand ◽  
Double Blind ◽  
Hand Dynamometer ◽  
The Subject ◽  
Chart Recording ◽  
Attempted Replication

A double-blind experiment with 50 adults was conducted to replicate a finding that proximity to sugar reduces human grip strength. Grip strength of the dominant hand was measured by a chart-recording hand dynamometer for 12 trials. For half of the trials, the subject held an opaque, sealed bottle containing sugar; for half of the trials, the subject held a control bottle of equal weight containing sand. Statistical analysis indicated no significant effect of held substance upon grip strength.

Fractionated Reaction Time as a Function of Magnitude of Force in Simple and Choice Conditions

1997 ◽  
Vol 85 (2) ◽  
pp. 435-444 ◽  
Author(s):  
Masanobu Ito
Keyword(s):  
Reaction Time ◽  
Grip Strength ◽  
Choice Reaction Time ◽  
Peak Force ◽  
Constant Amount ◽  
Premotor Time ◽  
Force Reaction ◽  
The Subject ◽  
Maximum Grip Strength ◽  
Maximum Grip

The present study examined whether varying magnitude of force required to perform an isometric response influences fractionated reaction time in simple and choice conditions and whether reaction time and premotor time to initiate the response are shorter when force is selected freely by the subject than when it is selected by the experimenter. 20 subjects were required to react and produce a designated peak force as quickly and accurately as possible by squeezing a handle after a reaction signal. Four different magnitudes of force were 30, 50, and 70% of the maximum grip strength of the subjects and subject-selected magnitude of force. Reaction time and premotor time did not change across the range of forces examined in both simple and choice reaction-time conditions regardless of whether a desired force was selected by the experimenter or by the subject These findings suggest that programming an isometric response may require a constant amount of time.

UTILITY OF THE POWERBALL® IN THE INVIGORATION OF THE MUSCULATURE OF THE FOREARM

Hand Surgery ◽  
2008 ◽  
Vol 13 (02) ◽  
pp. 79-83 ◽  
Author(s):  
Sebastián Axel Balan ◽  
Marc Garcia-Elias
Keyword(s):  
Grip Strength ◽  
Grip Force ◽  
Muscle Endurance ◽  
Upper Limbs ◽  
Muscular Endurance ◽  
Maximum Grip Strength ◽  
Forearm Muscle ◽  
Jamar Dynamometer ◽  
Resting Period ◽  
Maximum Grip

In order to ascertain the utility of a 250 Hz NSD Powerball® gyroscope in increasing the maximum grip force and muscular endurance of the forearm, ten adults without pathology in their upper limbs exercised one forearm with the device during a period of one month. We evaluated grip strength and forearm muscle endurance with a Jamar dynamometer both at the end of the month as well as after a resting period of one month. There was a tendency (not statistically significant p = 0.054), for the volunteers to increase their maximum grip strength. There was also highly significant increase in muscle endurance (p = 0.00001), a gain that remained slightly unchanged after the rest. Because the gyroscope generates random multidirectional forces to the forearm, the reactive muscle contraction is likely to stimulate more efficient neuromuscular contro of the wrist, a conclusion which our work appears to validate. The use of Powerball® in forearm proprioception deficient patients is, therefore, justified.

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