Relationship between hypertrophy, strength gains and tensiomyography adaptations: a moderator role of contraction duration

Effects of motor imagery training on skeletal muscle contractile properties in sports science students

“…This suggests that participants with a greater increase in muscle belly thickness experienced greater decreases in D m ( Kojić et al, 2021 ), or a greater decrease in muscle belly thickness was associated with a greater increase in D m ( Pišot et al, 2008 ). Kojić et al (2022) also observed this relationship suggesting that a reduced D m value reflects muscle hypertrophy ( r = − 0.72, p < 0.01 and r = − 0.76, p < 0.01), but moreover revealed the absence of correlations between strength gains and the corresponding TMG changes ( r = − 0.13, p = 0.72 and r = − 0.35, p = 0.32). This might indicate that changes in D m following resistance training are more influenced by gains in muscle thickness rather than by stiffness, which could explain the lack of effects of D m in this study.…”

“…In studies using physical practice as intervention, a reduction of D m was shown after 8 weeks of plyometric training ( Zubac & Šimunič, 2017 ), 6 weeks resistance training ( Wilson et al, 2019 ) or 7 weeks resistance training ( Kojić et al, 2021 ; Kojić et al, 2022 ), together with an increase in jumping performance or strength. As far as the mentioned studies also surveyed muscle thickness, an increase was also shown for this parameter alongside the decrease of D m ( Kojić et al, 2021 ; Kojić et al, 2022 ; Wilson et al, 2019 ). The results of Pišot et al (2008) confirm these findings: They showed an increase in D m along with a decrease in muscle thickness during a 35-day bed rest study.…”