This tensile strength decrement can be explained by reduction of inter-particulate bonding caused by formation of lubricant around carrier particles.
To determine the level of neck strength decrement and the rate of strength recovery of the neck muscles after a single bout of specific neck conditioning exercise in both males and females.
Results have shown that, although the use of CNS in reduced-fly ash content mixtures could not compensate the strength decrement, the stiffness of SCC mixtures containing CNS together with fly ash has been strikingly improved even the increase in total aggregate content is not noteworthy.
The means of the normalized N1m and ASSR source strength decrements across subjects for the contra-lateral masking condition are presented in Figure 6.
Indeed, some researchers have argued that impairments in the neural excitation of unloaded muscles are partly, or even primarily responsible for the observed strength decrements, particularly after short-duration unloading studies (Deschenes et al. 2002; Kawakami et al. 2001).
The means of the normalized N1m and ASSR source strength decrements obtained in the ipsi-lateral condition are displayed in Figure 5 with lower and upper 95% confidence limits.
N1m and ASSR source strength decrements observed in ipsi- or the contra-lateral masking conditions were normalized with respect to the source strength obtained in the control condition for each hemisphere of each subject (normalized decrement = (source strength unmasked-source strength masked)/source strength unmasked).
A repeated measures ANOVA applied to the normalized N1m source strength decrements during contra-lateral masking resulted in significant main effects for TS-TYPE (F (1, 9) = 7.8, p = 0.021) and HEMISPHERE (F (1, 9) = 6.0, p = 0.036), as well as a significant interaction between TS-TYPE and HEMISPHERE (F (1, 9) = 8.0, p = 0.020).
A repeated measures ANOVA applied to normalized ASSR source strength decrements during ipsi-lateral masking resulted in a significant main effect for TS-TYPE (F (1, 9) = 14.3, p < 0.01) and STIMULATION-SIDE (F (1, 9) = 11.3, p < 0.01); however, neither a significant main effect for HEMISPHERE nor an interaction was found.
A repeated measures analysis of variance (ANOVA) applied to normalized N1m source strength decrements during ipsi-lateral masking resulted in significant main effects for TS-TYPE (F (1, 9) = 179, p < 0.0001) and HEMISPHERE (F (1, 9) = 12.3, p < 0.01), as well as a significant interaction between TS-TYPE and HEMISPHERE (F (1, 9) = 6.6, p = 0.030).
From Fig. 11 shows that compressive the strength decrease with the decrement in density at 28 days with different replacement levels.
