Isokinetic Eccentric Exercise of Quadriceps Femoris Does Not Affect Running Economy

@article{Vassilis2008IsokineticEE,
  title={Isokinetic Eccentric Exercise of Quadriceps Femoris Does Not Affect Running Economy},
  author={Paschalis Vassilis and Baltzopoulos Vassilios and Mougios Vassilis and Jamurtas Z Athanasios and Theoharis Vassilis and Karatzaferi Christina and Koutedakis Yiannis},
  journal={Journal of Strength and Conditioning Research},
  year={2008},
  volume={22},
  pages={1222-1227}
}
Vassilis, P, Vassilios, B, Vassilis, M, Athanasios, JZ, Vassilis, T, Christina, K, and Yiannis, K. Isokinetic eccentric exercise of quadriceps femoris does not affect running economy. J Strength Cond Res 22: 1222-1227, 2008-The purpose of this study was to investigate whether running economy is affected by isokinetic eccentric exercise designed to cause muscle damage. Twenty-four young healthy men performed 120 maximal voluntary eccentric actions at each thigh's quadriceps muscle at an angular… 
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Isoload vs isokinetic eccentric exercise: a direct comparison of exercise-induced muscle damage and repeated bout effect

IK vs IL supra-maximal eccentric contraction is showed to have different muscle damage symptoms and protection conferred by first bout reduced muscle damage after 4 weeks and decreased difference between IL and IK.

Isoload vs isokinetic eccentric exercise: a direct comparison of exercise-induced muscle damage and repeated bout effect

IK vs IL supra-maximal eccentric contraction is showed to have different muscle damage symptoms and protection conferred by first bout reduced muscle damage after 4 weeks and decreased difference between IL and IK.

Effect of Contraction Velocity of Eccentric Exercise-Induced Muscle Damage on Running Economy in Trained Young Females

With regard to the same tension time in muscle, contraction velocity (Four-fold difference) of eccentric exercise-induced muscle damage of dominant knee extensor was not a determining factor of changes in running economy in trained young females.

Exercise-Induced Muscle Damage and Running Economy in Humans

Running economy (RE), defined as the energy demand for a given velocity of submaximal running, has been identified as a critical factor of overall distance running performance and Plyometric and resistance trainings have been successfully used to improve RE in trained athletes.

6 Eccentric Exercise , Muscle Damage and Oxidative Stress

Recent data indicates that eccentrically induced muscle damage is related with positive changes in lipid profile that are evident for a few days following the initial event, which suggests that oxidative stress indices are attenuated when a subsequent exercise bout of the same intensity is performed even a few months later.

Eccentric Exercise, Muscle Damage and Oxidative Stress

Recent data indicates that eccentrically induced muscle damage is related with positive changes in lipid profile that are evident for a few days following the initial event, which suggests that oxidative stress indices are attenuated when a subsequent exercise bout of the same intensity is performed even a few months later.

Muscle damage and repeated bout effect induced by enhanced eccentric squats.

The enhanced eccentric exercise induced symptoms of muscle damage up to 96 hours, however, it provided muscle protection after the second bout, performed four weeks later, which was not eccentric-only exercise.

Effects of Exercise Induced Muscle Damage in Well-Trained Cyclists' Aerobic and Anaerobic Performance.

The EIMD didn't impair gross efficiency, nor aerobic and anaerobic performances in trained cyclists, however, despite the benefits of strength training to improve cyclists' performance, coaches must be cautious to the days after the strength training sessions, because EIMd may change the perception of maintaining a given submaximal intensity during training or competition.

Strength Training Prior to Endurance Exercise: Impact on the Neuromuscular System, Endurance Performance and Cardiorespiratory Responses

It is suggested that endurance performance may be impaired when preceded by strength-training, with no oxygen uptake or heart rate changes during the exercise.

The acute effects intensity and volume of strength training on running performance

It is demonstrated that a 6-hour recovery period following HW, HL and LW sessions may minimize attenuation in endurance training performance below anaerobic threshold, although caution should be taken for endurance training sessions above AT amongst trained and moderately endurance trained runners.

34 References

The effects of muscle damage on running economy in healthy males.

It was concluded that changes in muscle damage and muscle performance as measured in this study are not reflected by concomitant alterations in running economy at submaximal intensities.

Exercise-induced muscle damage: absence of adaptive effect after a single session of eccentric isokinetic heavy resistance exercise.

The first session of eccentric isokinetic exercise (EE1) had no adaptive effect against muscle damage when an identical session was performed 4 weeks later (EE2), and Muscle adaptation could have resulted in increased work production.

EQUAL VOLUMES OF HIGH AND LOW INTENSITY OF ECCENTRIC EXERCISE IN RELATION TO MUSCLE DAMAGE AND PERFORMANCE

It is indicated that matching volumes of HI and LI eccentric exercise have similar effects on muscle damage, but HI has a more prominent effect on muscle performance.

Short vs. long length of rectus femoris during eccentric exercise in relation to muscle damage in healthy males.

The effects of muscle damage following eccentric exercise on gait biomechanics.

Acute adaptation to low volume eccentric exercise.

Adaptation to eccentric exercise can occur in the absence of significant muscle damage, and exposure to a small number of nondamaging eccentric contractions can significantly improve recovery after a subsequent damaging eccentric bout.

Exercise metabolism in human skeletal muscle exposed to prior eccentric exercise

In muscle exposed to prior eccentric contractions, exercise at a given power output requires a higher relative workload than in undamaged muscle, which increases utilization of the decreased muscle glycogen stores, contributing to decreased endurance.

Short-term immobilization after eccentric exercise. Part II: creatine kinase and myoglobin.

Short-term immobilization after eccentric exercise blunted the CK response but not the Mb response, suggesting lymphatic transport of CK may be responsible.

Effects of Plyometric Exercise on Muscle Soreness and Plasma Creatine Kinase Levels and Its Comparison with Eccentric and Concentric Exercise

It is suggested that DOMS after an intense exercise session appears to be similar in P and E but lower in C, and plasma CK responses after a P exercise session were similar to E and C exercises.

Activity and immobilization after eccentric exercise: I. Recovery of muscle function.

The recovery of MIF in both the light exercise and immobilization groups suggests that more than one mechanism may be involved in the recovery of isometric force after eccentric exercise.