Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Determination of subject-specific muscle fatigue rates under static
  fatiguing operations   Cumulative local muscle fatigue may lead to potential musculoskeletal
disorder (MSD) risks {\color{red}, and subject-specific muscle fatigability
needs to be considered to reduce potential MSD risks.} This study was conducted
to determine local muscle fatigue rate at shoulder joint level based on an
exponential function derived from a muscle fatigue model. Forty male subjects
participated in a fatiguing operation under a static posture with a range of
relative force levels (14% - 33%). Remaining maximum muscle strengths were
measured after different fatiguing sessions. The time course of strength
decline was fitted to the exponential function. Subject-specific fatigue rates
of shoulder joint moment strength were determined. Good correspondence
($R^2>0.8$) was found in the regression of the majority (35 out of 40
subjects). Substantial inter-individual variability in fatigue rate was found
and discussed.

7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
4
The categories of this paper are: cond-mat
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex