Effects of Gloves on the Grip Strength Applied to Cylindrical Handles

Wimer, Bryan M.; McDowell, Thomas W.; Xu, Xueyan S.; Welcome, Daniel E.; Warren, Christopher; Dong, Ren G.

doi:10.17077/achv2010.1013

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…Consequently, the operators may need to apply more force to grasp the tool, resulting in an increase of the musculoskeletal load in the hand. This is similar to scenarios of power tool operations while wearing thick gloves [35]. From a dynamical point-of-view, a reduction of the contact stiffness may change the resonant frequencies of the fingers and the hand-arm system and reduce the transmitted vibration at frequencies above the resonant frequencies [20].…”

Section: Discussionmentioning

confidence: 92%

Analysis of the effects of surface stiffness on the contact interaction between a finger and a cylindrical handle using a three-dimensional hybrid model

Dong

Warren

et al. 2014

Medical Engineering & Physics

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Contact interactions between the hand and handle, such as the contact surface softness and contact surface curvature, will affect both physical effort and musculoskeletal fatigue, thereby the comfort and safety of power tool operations. Previous models of hand gripping can be categorized into two groups: multi-body dynamic models and finite element (FE) models. The goal of the current study is to develop a hybrid FE hand gripping model, which combines the features of conventional FE models and multi-body dynamic models. The proposed model is applied to simulate hand-gripping on a cylindrical handle with covering materials of different softness levels. The model included three finger segments (distal, middle, and proximal phalanxes), three finger joints (the distal interphalangeal (DIP), proximal interphalangeal (PIP), and metacarpophalangeal (MCP) joint), and major anatomical substructures. The model was driven by joint moments, which are the net effects of all passive and active muscular forces acting about the joints. The finger model was first calibrated by using experimental data of human subject tests, and then applied to investigate the effects of surface softness on contact interactions between a finger and a cylindrical handle. Our results show that the maximal compressive stress and strain in the soft tissues of the fingers can be effectively reduced by reducing the stiffness of the covering material.

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Section: Discussionmentioning

confidence: 92%

Analysis of the effects of surface stiffness on the contact interaction between a finger and a cylindrical handle using a three-dimensional hybrid model

Dong

Warren

et al. 2014

Medical Engineering & Physics

Self Cite

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“…This may be due to local muscular fatigue in the forearms. Previous studies have suggested that gloves can reduce HG strength by up to 29% based on the thickness and stiffness of the gloves worn (31). In addition, gloves decrease HG strength endurance by 26% compared with gloveless conditions (25).…”

Section: Discussionmentioning

confidence: 99%

Comparing Acute Responses Between Single Session Circuit Training and Fireground Suppression Tasks

Loewen

Melton

Maupin

et al. 2023

Journal of Strength &Amp; Conditioning Research

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Loewen, B, Melton, B, Maupin, D, and Ryan, G. Comparing acute responses between single session circuit training and fireground suppression tasks. J Strength Cond Res 37(8): 1667–1678, 2023—The purpose of this study was to compare the cardio-metabolic and perceived demands of task-specific circuit training to fireground suppression tasks (FST). Twenty-three career, structural firefighters performed three separate testing days (i.e., FST, CT, and CTW). FST consisted of performing seven common occupational tasks in full gear (∼22.5kg). The weighted (CTW: 18.9kg vest) and unweighted (CT) circuit utilized seven exercises designed to mimic the FST's. Measurements included relative heart rate (%HRmax), post-training blood lactate (Lapost), change in countermovement jump height (▵CMJ), change in dominant and non-dominant handgrip strength (▵DHG and ▵NDHG), total training time, rating of perceived exertion (RPE), and job-specific rating of relevance. A repeated measure analysis of variance (ANOVA), with Bonferroni post-hoc, was performed for each variable, excluding RPE and rating of relevance. Friedman's ANOVA was used to assess differences in RPE and rating of relevance, with Wilcoxen Signed Rank tests follow-up. Significant mean differences were found in %HRmax between CT and FST (∼8.6%, p < 0.01, d = 1.12) and CTW and FST (∼5.3%, p < 0.01, d = 0.75), ▵CMJ between CT and FST (p < 0.01, d = 1.35) and CTW and FST (p < 0.01, d = 1.09), ▵NDHG between CTW and FST (p = 0.01, d = 0.79), training time between CT and FST (p < 0.01, d = 1.00) and CTW and FST (p < 0.01, d = 1.81), and rating of relevance between CT and FST (PS dep = 0.67). In conclusion, CT and CTW were able to elicit similar metabolic and perceived demands as FST, while producing a lower cardiovascular response. Therefore, while circuit training may be a beneficial training tool for firefighters, it cannot replicate FST.

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Effects of Gloves on the Grip Strength Applied to Cylindrical Handles

Cited by 2 publications

References 2 publications

Analysis of the effects of surface stiffness on the contact interaction between a finger and a cylindrical handle using a three-dimensional hybrid model

Analysis of the effects of surface stiffness on the contact interaction between a finger and a cylindrical handle using a three-dimensional hybrid model

Comparing Acute Responses Between Single Session Circuit Training and Fireground Suppression Tasks

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