Abstract
PURPOSE: One bout of 5-6 s of maximal voluntary isometric contraction (MVC) is known to enhance subsequent dynamic joint performance such as dynamic joint torque and power with maximal voluntary effort. On the other hand, such a muscle contraction can also induce muscle fatigue. It is then possible that individual differences in fatigue resistance is a factor that affects the balance between potentiation and fatigue. Here, we examined the effect of chronic heavy-resistance training on the extent and time course of the potentiation of maximal voluntary dynamic torque. METHODS: Before and after a 12-wk intervention, maximal voluntary concentric knee extension torque at 210 ·s was measured in the following sequence: before and immediately after a 5-s MVC of knee extension and 1, 3, and 5 min thereafter. The training group performed heavy-resistance training exercise of knee extension consisting of five sets of eight repetitions with 80% of one-repetition maximum, three sessions a week during the intervention period. RESULTS: Before the resistance training intervention, maximal voluntary concentric torque was significantly enhanced only at 1 and 3 min post-MVC. After the 12-wk resistance training, the maximal voluntary concentric torque was potentiated also immediately after the conditioning MVC and was further increased at 1-min point. CONCLUSION: These findings indicate that the contraction-induced potentiation of maximal voluntary dynamic torque is pronounced in strength-trained individuals.
| Original language | English |
|---|---|
| Pages (from-to) | 1323-1330 |
| Number of pages | 8 |
| Journal | Medicine and Science in Sports and Exercise |
| Volume | 45 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2013 Jul |
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Keywords
- maximal voluntary concentric torque
- muscle fatigue
- Postactivation potentiation
- quadriceps femoris
- twitch contraction
- warm-up
ASJC Scopus subject areas
- Orthopedics and Sports Medicine
- Physical Therapy, Sports Therapy and Rehabilitation
Cite this
Further potentiation of dynamic muscle strength after resistance training. / Miyamoto, Naokazu; Wakahara, Taku; Ema, Ryoichi; Kawakami, Yasuo.
In: Medicine and Science in Sports and Exercise, Vol. 45, No. 7, 07.2013, p. 1323-1330.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Further potentiation of dynamic muscle strength after resistance training
AU - Miyamoto, Naokazu
AU - Wakahara, Taku
AU - Ema, Ryoichi
AU - Kawakami, Yasuo
PY - 2013/7
Y1 - 2013/7
N2 - PURPOSE: One bout of 5-6 s of maximal voluntary isometric contraction (MVC) is known to enhance subsequent dynamic joint performance such as dynamic joint torque and power with maximal voluntary effort. On the other hand, such a muscle contraction can also induce muscle fatigue. It is then possible that individual differences in fatigue resistance is a factor that affects the balance between potentiation and fatigue. Here, we examined the effect of chronic heavy-resistance training on the extent and time course of the potentiation of maximal voluntary dynamic torque. METHODS: Before and after a 12-wk intervention, maximal voluntary concentric knee extension torque at 210 ·s was measured in the following sequence: before and immediately after a 5-s MVC of knee extension and 1, 3, and 5 min thereafter. The training group performed heavy-resistance training exercise of knee extension consisting of five sets of eight repetitions with 80% of one-repetition maximum, three sessions a week during the intervention period. RESULTS: Before the resistance training intervention, maximal voluntary concentric torque was significantly enhanced only at 1 and 3 min post-MVC. After the 12-wk resistance training, the maximal voluntary concentric torque was potentiated also immediately after the conditioning MVC and was further increased at 1-min point. CONCLUSION: These findings indicate that the contraction-induced potentiation of maximal voluntary dynamic torque is pronounced in strength-trained individuals.
AB - PURPOSE: One bout of 5-6 s of maximal voluntary isometric contraction (MVC) is known to enhance subsequent dynamic joint performance such as dynamic joint torque and power with maximal voluntary effort. On the other hand, such a muscle contraction can also induce muscle fatigue. It is then possible that individual differences in fatigue resistance is a factor that affects the balance between potentiation and fatigue. Here, we examined the effect of chronic heavy-resistance training on the extent and time course of the potentiation of maximal voluntary dynamic torque. METHODS: Before and after a 12-wk intervention, maximal voluntary concentric knee extension torque at 210 ·s was measured in the following sequence: before and immediately after a 5-s MVC of knee extension and 1, 3, and 5 min thereafter. The training group performed heavy-resistance training exercise of knee extension consisting of five sets of eight repetitions with 80% of one-repetition maximum, three sessions a week during the intervention period. RESULTS: Before the resistance training intervention, maximal voluntary concentric torque was significantly enhanced only at 1 and 3 min post-MVC. After the 12-wk resistance training, the maximal voluntary concentric torque was potentiated also immediately after the conditioning MVC and was further increased at 1-min point. CONCLUSION: These findings indicate that the contraction-induced potentiation of maximal voluntary dynamic torque is pronounced in strength-trained individuals.
KW - maximal voluntary concentric torque
KW - muscle fatigue
KW - Postactivation potentiation
KW - quadriceps femoris
KW - twitch contraction
KW - warm-up
UR - http://www.scopus.com/inward/record.url?scp=84880636107&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84880636107&partnerID=8YFLogxK
U2 - 10.1249/MSS.0b013e3182874c0e
DO - 10.1249/MSS.0b013e3182874c0e
M3 - Article
VL - 45
SP - 1323
EP - 1330
JO - Medicine and Science in Sports and Exercise
JF - Medicine and Science in Sports and Exercise
SN - 0195-9131
IS - 7
ER -