The effect of eccentric training at different velocities on cross-education

Farthing, Jonathan P.; Chilibeck, Philip D.

doi:10.1007/s00421-003-0841-3

Cited by 98 publications

(86 citation statements)

References 34 publications

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“…However, one explanation for the different response could be that the participants only trained isometric in the study by Rabita et al (2000) whereas the present resistance training program also included dynamic training. This may suggest that the different parts of the quadriceps femoris complex adapts differentially to different resistance training regimes, supporting the observation of velocity-specific adaptations (Farthing & Chilibeck, 2003). Yet, an explanation to why LFG increased in ISOK ECC RMS max and MVC RMS max while the HFG did not, when no significant difference was observed in the development in ISOK ECC and MVC force, could be that the HFG improved in other neural aspects, which could not be detected in the present design.…”

Section: Electromyographysupporting

confidence: 67%

Effects of Resistance Training Frequency on Short-Term Neuromuscular Adaptations in Untrained Participants

Hansen¹,

Jørgensen²,

Nielsen³

et al. 2017

APE

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Objective: The purpose of this study was to evaluate whether performing resistance training four days per week was superior to two days per week, in promoting strength and neuromuscular adaptations of the leg extensor muscles. Methods: Nine untrained participants (21.4 ± 2.0 years) were pair matched according to gender and leg extensor maximal voluntary contraction (MVC) and randomly assigned to either a low frequency group (LFG) or a high frequency group (HFG). MVC, 10-repetition maximum (10 RM), and voluntary muscle activation (VA) were recorded pre and post two weeks of unilateral leg extension resistance training. The interpolated twitch technique was used to estimate VA and surface electromyography data was recorded during MVC. Results: VA and 10 RM increased significantly for both groups. For LFG, VA increased from 84.5% ± 5.0% to 92.5% ± 3.4% (p = 0.003) and for HFG, VA increased from 87.3% ± 2.1% to 95.3% ± 1.3% (p = 0.006). 10 RM increased from 43.2 ± 8.0 kg to 48.2 ± 6.2 kg (p = 0.034) and from 45.3 ± 5.9 to 49.0 ± 7.4 kg (p = 0.05) for LFG and HFG, respectively. No differences were observed between groups. Thus, two weeks of resistance training significantly increased the 10 RM and VA in both groups, while no differences were observed between groups. Conclusions: These results indicate that performing resistance training two or four times per week are equally effective in promoting strength and neuromuscular adaptations, when weekly volume is equalized.

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Section: Electromyographysupporting

confidence: 67%

Effects of Resistance Training Frequency on Short-Term Neuromuscular Adaptations in Untrained Participants

Hansen¹,

Jørgensen²,

Nielsen³

et al. 2017

APE

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“…Asimakopoulou et al reported that fear of falling and low self-confidence of patients with diabetes type 2 is another reason for their low scores in Time up and Go test which play an important role in the reduction of their functional activity and stability (13). Study of Farthing et al on the effect of eccentric exercises on muscular hypertrophy compared to concentric exercises showed that eccentric exercises significantly increase muscular hypertrophy due to muscular built stimulation and increase the size of muscular fibers (14). Cuff et al evaluated the effect of therapeutic exercises on women patients with diabetes type 2 and reported that eccentric and concentric exercises increase oxidation of lipids and decrease insulin resistance in these patients which may control metabolic flexibility disorder and improve their health status, in the case of regular and long-term exercises (15).…”

Section: Introductionmentioning

confidence: 99%

Effects of Eccentric and Concentric Exercises on Some Functional Activity Indexes of Patients With Diabetes Type 2

Hajihasani

Bahrpeyma

Bakhtiary

2014

Middle East J Rehabil Health

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Background: Around 7% of the world population have diabetes and suffer from its extensive complications. Many studies are conducted on the positive effects of aerobic and resistance exercises on the reduction of body performances, but considering the available references, no specific study is conducted on the effect of eccentric exercises on patients with diabetes. Objectives: The current study aimed to evaluate and compare the effects of eccentric and concentric exercises on some functional activity indexes in patients with diabetes type 2. Patients and Methods: Twenty eight patients with diabetes type 2 were randomly divided into two groups of eccentric and concentric exercises using treadmill. Six Minute Walking and Time up and Go tests were performed before and after control and intervention periods. Results: Results of the current study showed that eccentric and concentric exercises significantly improved the two mentioned functional indexes. However, eccentric exercises in comparison with concentric exercises significantly improved the results of Six Minute Walking Test (P < 0.0001). Also, in the time up and go test, no significant difference was observed between the groups. Conclusions: Results of the current study showed that the eccentric exercises improve the functional activity of patients with diabetes.

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“…Πράγματι, έχει αναφερθεί ότι η έκκεντρη μορφή άσκησης επιφέρει μεγαλύτερες αλλαγές σε σχέση με την αντίστοιχη ομόκεντρη άσκηση στην μυϊκή δύναμη (Farthing & Chilibeck, 2003;Hortobagyi, et al, 1996;LaStayo, Pierotti, Pifer, Hoppeler, & Lindstedt, 2000;Lastayo, Reich, Urquhart, Hoppeler, & Lindstedt, 1999;Paschalis, Nikolaidis, Giakas, et al, 2010;Steiner, et al, 2004). Επιπλέον, έχει αναφερθεί από έρευνες ότι η έκκεντρη άσκηση επιφέρει μεγαλύτερη μυϊκή υπερτροφία σε σχέση με την ομόκεντρη άσκηση (Farthing & Chilibeck, 2003;LaStayo, et al, 2000).…”

Section: Petersen Et Al 2001unclassified

“…Επιπλέον, έχει αναφερθεί από έρευνες ότι η έκκεντρη άσκηση επιφέρει μεγαλύτερη μυϊκή υπερτροφία σε σχέση με την ομόκεντρη άσκηση (Farthing & Chilibeck, 2003;LaStayo, et al, 2000).…”

Section: Petersen Et Al 2001unclassified

“…Πιο συγκεκριμένα, η έκκεντρη προπόνηση αύξησε την ενεργειακή δαπάνη ηρεμίας, αύξησε την οξείδωση λιπιδίων και βελτίωσε το λιπιδαιμικό προφίλ σε μεγαλύτερο βαθμό σε σχέση με την αντίστοιχη ομόκεντρη προπόνηση. Επιπλέον, αύξησε περισσότερο και τη μέγιστη ισομετρική ροπή σε σχέση με την ομόκεντρη προπόνηση, γεγονός που έχει αναφερθεί και από άλλες έρευνες (Farthing & Chilibeck, 2003;Hortobagyi, et al, 1996;LaStayo, et al, 2000).…”

Section: Petersen Et Al 2001unclassified

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Η Επίδραση Της Έκκεντρης Προπόνησης Σε Δείκτες Μυϊκής Βλάβης Και Οξειδωτικού Στρες

Θεοδώρου¹

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Anastasios A. Theodorou : The effect of eccentric training on muscle damage and redox status indices (Under the supervision of Athanasios Jamurtas, Assistand Professor)Antioxidant supplementation is quite often among athletes in an attempt to counteract the increased production of free radicals during exercise and especially after exerciseinduced muscle damage (eccentric). Recently an increasing number of studies reported negative effects of antioxidant supplementation on the training and cellular adaptations to chronic exercise. The aim of the present study was to investigate the effects of vitamin C and E supplementation on muscle performance, blood and muscle redox status, hemolysis and blood lipid profile in both trained and untrained individuals after acute and chronic exercise. After previous investigations of our group, a specific type of exercise was applied (eccentric) in order to produce long lasting and extensive changes in all biomarkers and examine more easily any effects of antioxidant supplementation. In a double-blinded fashion, participants received either a daily oral supplementation of vitamin C and vitamin E (n=14) or placebo (n=14) for eleven weeks. Following baseline tests, volunteers performed an eccentric exercise session two times per week for four weeks. Before and after the chronic eccentric exercise volunteers were subjected to one session of acute eccentric exercise, and physiological measurements were performed as well as blood samples and muscle biopsies (from 8 participants) were collected. The present results failed to support any effect of antioxidant supplementation; eccentric exercise similarly modified muscle damage and performance, blood redox status, hemolysis and lipid profile in both supplemented and non-supplemented groups. This is despite the fact that eccentric exercise induced marked changes in muscle damage and performance as well as redox status and lipid profile for several days after exercise. The complete lack of any effect on the physiological and biochemical outcome measures employed questions the validity of using orally antioxidant supplementation as redox modulators of muscle and redox status in healthy humans. Moreover, the lack of any effect of antioxidant supplementation on training and cellural adaptation to exercise observed in this study, opposed previous studies suggesting that antioxidant may block training adaptations.

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The effect of eccentric training at different velocities on cross-education

Cited by 98 publications

References 34 publications

Effects of Resistance Training Frequency on Short-Term Neuromuscular Adaptations in Untrained Participants

Effects of Resistance Training Frequency on Short-Term Neuromuscular Adaptations in Untrained Participants

Effects of Eccentric and Concentric Exercises on Some Functional Activity Indexes of Patients With Diabetes Type 2

Η Επίδραση Της Έκκεντρης Προπόνησης Σε Δείκτες Μυϊκής Βλάβης Και Οξειδωτικού Στρες

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