Abstract
We developed an estimation formula for mission motion suitability evaluation based on the general motion protocol to evaluate the motion suitability of a tracked vehicle crew jacket. Motion suitability evaluation was conducted for the 9 general motions and 12 mission motions among 27 tracked vehicle crew members who wore a tracked vehicle crew jacket. We conducted correlation and factor analyses on motions to extract the main mission motions, and a multiple regression analysis was performed on major mission motions using general motions as independent variables. As a result, two mission behavior factors related to ammunition stowing and boarding/entry were extracted. We selected ammunition stowing I and the boarding motion, which has the highest factor load in each factor and the highest explanatory power (R2) of the estimation formula. Regression equations for ammunition stowing consisting of five general motions (p < 0.001) and for boarding motion (p < 0.01) consisting of one general motion could be obtained. In conclusion, the estimation formula for mission motion suitability using general motion is beneficial for enhancing the effectiveness of the evaluation of military jackets for tracked vehicle crews.
Highlights
We developed an estimation formula for mission motion suitability evaluation based on the general motion protocol to evaluate the motion suitability of a tracked vehicle crew jacket
Ammunition was positively correlated (p < 0.05) with the ammunition stowing II because one of the two people moved from the deck of a tracked vehicle with ammunition; it was not significantly correlated with most mission motions
We proposed an estimation formula to predict mission motion suitability for the main mission of tracked vehicle crew members
Summary
We developed an estimation formula for mission motion suitability evaluation based on the general motion protocol to evaluate the motion suitability of a tracked vehicle crew jacket. Motion suitability evaluation was conducted for the 9 general motions and 12 mission motions among 27 tracked vehicle crew members who wore a tracked vehicle crew jacket. The estimation formula for mission motion suitability using general motion is beneficial for enhancing the effectiveness of the evaluation of military jackets for tracked vehicle crews. The tracked vehicle crew’s uniforms should be developed considering mission motion suitability [11]. Previous studies on the development of military uniforms have evaluated the motion suitability of clothing using general motion and mission motion [11,12,13,14,15,16]. All motions of joints can be described as flexion, extension, adduction, abduction, rotation, pronation, or supination [18,19], and general motion for evaluating the motion suitability of the jackets includes the usability of joints of the cervical column
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