@article{oai:kanazawa-u.repo.nii.ac.jp:00000994,
 author = {Nakada, Masakatsu and Demura, Shinichi and Yamaji, Shunsuke},
 issue = {1},
 journal = {Journal of physiological anthropology and applied human science},
 month = {Jan},
 note = {The purpose of this study was to examine the properties and interrelationships of various force-time parameters including the inflection point for the rate of decline in force during a maximal repeated rhythmic grip. Fifteen healthy males (age M=21.5, SD=2.1 yr, height M=172.4, SD=5.7cm, body mass M=68.2, SD=9.2kg) participated in this study. Subjects performed a maximal repeated rhythmic grip with maximal effort with a target frequency of 30 grip・min^<-1> for 6min. The force value decreased linearly and markedly until about 70% of maximal strength for about 55s after the onset of a maximal repeated rhythmic grip, and then decreased moderately. Because all parameters showed fair or good correlations between 3min and 6min, they are considered to be able to sufficiently evaluate muscle endurance for 3 min instead of 6 min. However, there were significant differences between 3 min and 6 min in the integrated area, the final force, the rate of the decrement constant (k) fitting the force decreasing data to y=ae^<-kx>+b and the force of maximal difference between the force and a straight line from peak force to the final force. Their parameters may vary generally by the length of a steady state, namely, a measurement time. The final force value before finishing and the rate of the decrement constant (k) reflect the latter phase during a maximal repeated rhythmic grip. Although many parameters show relatively high mutual relationships, the rate constant (k) shows relatively low correlations with other parameters. We inferred that decreasing the time until 80% of maximal strength and the amount of the decrement force for the first 1 min reflect a linear decrease in the initial phase., 金沢大学人間社会研究域人間科学系},
 pages = {15--21},
 title = {The Properties and Interrelationships of Various Force-time Parameters during Maximal Repeated Rhythmic Grip},
 volume = {26},
 year = {2007}
}