{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,11]],"date-time":"2025-12-11T07:37:18Z","timestamp":1765438638296},"reference-count":57,"publisher":"PeerJ","license":[{"start":{"date-parts":[[2020,7,1]],"date-time":"2020-07-01T00:00:00Z","timestamp":1593561600000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"crossref","award":["31800477"],"award-info":[{"award-number":["31800477"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Anhui Provincial National Science Foundation","award":["201910364259"],"award-info":[{"award-number":["201910364259"]}]},{"name":"Anhui Agricultural University Provincial Innovation fund","award":["1808085MC69"],"award-info":[{"award-number":["1808085MC69"]}]},{"name":"Anhui Agricultural University Innovation Foundation for Postgraduate","award":["2019ysj-15"],"award-info":[{"award-number":["2019ysj-15"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:sec>\n               <jats:title>Background<\/jats:title>\n               <jats:p>In today\u2019s economy, workers spend increasingly more time in seated positions, leading to a growing scientific interest in chair design. In this study we used body pressure distribution tests to compare a novel bamboo chair with unique structural features to other commonly-used chairs. We studied the bamboo sheet chair\u2019s physical characteristics and comfort to provide a scientific theoretical basis for common use seat design.<\/jats:p>\n            <\/jats:sec>\n            <jats:sec>\n               <jats:title>Methods<\/jats:title>\n               <jats:p>A total of 25 (14 male and 11 female) subjects participated in the study. Subjects were divided into six groups according to their body characteristics parameters included stature, weight, shoulder breadth, hip breadth, waist width, popliteal height, buttocks-popliteal length, and buttock-abdomen depth, with three groups for males and three groups for females. Each subject was required to complete specified body pressure tests for three different experimental chairs for three minutes and subjective comfort evaluations were also administered. The pressure indexes were measured from the seat pan and backrest and calculated with MATLAB 2015b, which mainly included maximum pressure (<jats:italic>Pm<\/jats:italic>), average pressure (<jats:italic>Pa<\/jats:italic>), pressure exponent (<jats:italic>Pe<\/jats:italic>) and contact area index (<jats:italic>P<\/jats:italic><jats:sub><jats:italic>AI<\/jats:italic><\/jats:sub>). Three pressure threshold limits of 0.67 kPa, 4.00 kPa and 9.33 kPa and four contact surface indexes were used in the experiment to reflect the contact area between human and chair.<\/jats:p>\n            <\/jats:sec>\n            <jats:sec>\n               <jats:title>Results<\/jats:title>\n               <jats:p>The contact areas in the backrest (52.96 \u00b1 32.94 cm<jats:sup>2<\/jats:sup>) and seat pan (307.75 \u00b1 90.31 cm<jats:sup>2<\/jats:sup>) in the middle-to-high threshold pressure range, and the contact areas of the backrest (4.34 \u00b1 5.95 cm<jats:sup>2<\/jats:sup>) in the high threshold pressure range of bamboo sheet chair were smaller than the corresponding indexes of the common office chair (81.430 \u00b1 45.04 cm<jats:sup>2<\/jats:sup>, <jats:italic>p<\/jats:italic>\u00a0=\u00a00.00; 394.39 \u00b1 98.99 cm<jats:sup>2<\/jats:sup>, <jats:italic>p<\/jats:italic>\u00a0=\u00a00.02; 13.54 \u00b1 12.00 cm<jats:sup>2<\/jats:sup>, <jats:italic>p<\/jats:italic>\u00a0=\u00a00.00, respectively). The pressure index (2.68 \u00b1 0.88 kPa), maximum pressure (6.66 \u00b1 2.05 kPa), and average pressure (2.42 \u00b1 0.59 kPa) values of the bamboo sheet chair backrest were also found to be lower than those of the office chair (4.32 \u00b1 1.62 kPa, <jats:italic>p<\/jats:italic>\u00a0=\u00a00.00; 10.50 \u00b1 3.88 kPa, <jats:italic>p<\/jats:italic>\u00a0=\u00a00.00; 3.43 \u00b1 0.97 kPa, <jats:italic>p<\/jats:italic>\u00a0=\u00a00.00, respectively). The average pressure on the seat pan was greater than 4 kPa for all subjects, while the average pressure on the seat pan was greater than 9.33 kPa for male subjects with a body mass index (BMI) of 27.48.<\/jats:p>\n            <\/jats:sec>\n            <jats:sec>\n               <jats:title>Discussion<\/jats:title>\n               <jats:p>The bamboo sheet chair\u2019s contact areas within the middle-to-high and high-pressure threshold ranges of the backrest and seat pan were smaller than those of the office chair, indicating that the bamboo sheet chair is effective at relieving pressure. Human body characteristics must be considered in the design of seat functional size. Buttocks-popliteal length, weight, body mass index, body shape and weight distribution, all have important effects on the distribution of body pressure at the human-chair interface.<\/jats:p>\n            <\/jats:sec>","DOI":"10.7717\/peerj.9476","type":"journal-article","created":{"date-parts":[[2020,7,1]],"date-time":"2020-07-01T08:57:45Z","timestamp":1593593865000},"page":"e9476","source":"Crossref","is-referenced-by-count":6,"title":["A novel bamboo sheet chair and its influence on sitting comfort"],"prefix":"10.7717","volume":"8","author":[{"given":"Fangcheng","family":"Yuan","sequence":"first","affiliation":[{"name":"College of Forest and Garden, Anhui Agricultural University, Hefei, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yong","family":"Guo","sequence":"additional","affiliation":[{"name":"College of Forest and Garden, Anhui Agricultural University, Hefei, 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