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The effects of supramaximal versus submaximal intensity eccentric training when performed until volitional fatigue.
Eur J Appl Physiol. 2017 Oct; 117(10):2099-2108.EJ

Abstract

PURPOSE

Our purpose was to compare supramaximal versus submaximal intensity eccentric training performed until volitional fatigue.

METHODS

Thirty-two young adults (19 males) were randomized into one of three groups: (1) ECC110 performed eccentric (ECC) only contractions at 110% of concentric (CON) 1-repetition maximum (1RM); (2) ECC80 performed ECC only contractions at 80% of CON 1RM; (3) a control group. Training progressed from 3 to 6 sets of unilateral ECC training of the elbow flexors over 8 weeks, with each set performed until volitional fatigue. Elbow flexors muscle thickness (via ultrasound) and 1RM were assessed pre- and post-training. Rating of perceived exertion (RPE) and muscle soreness was self-reported.

RESULTS

Both ECC110 (+0.25 cm) and ECC80 (+0.21 cm) showed a greater post-training increase in muscle thickness compared to control (-0.01 cm) (p < 0.05), with no differences between ECC110 and ECC80. ECC80 (+1.23 kg) showed a greater post-training increase in strength compared to control (p < 0.05), while ECC110 (+0.76 kg) had no significant difference post-training vs. control (-0.01 kg). ECC80 had significantly lower average RPE scores than ECC110 (p < 0.05).

CONCLUSIONS

Both supramaximal intensity eccentric training and submaximal intensity eccentric training are effective for increasing muscle size, but submaximal eccentric training is perceived to require less exertion than supramaximal training. These findings suggest that submaximal eccentric training may be an ideal strategy to increase muscle size and strength in individuals whose needs warrant training at a lower level of exertion.

Links

Publisher Full Text (DOI)

Authors+Show Affiliations

Krentz JR
Department of Physical Education, Faculty of Education, Brandon University, 270 18th Street, Brandon, MB, R7A 6A9, Canada. krentzj@brandonu.ca.
Chilibeck PD
College of Kinesiology, University of Saskatchewan, Saskatoon, SK, Canada.
Farthing JP
College of Kinesiology, University of Saskatchewan, Saskatoon, SK, Canada.

MeSH

AdultElbowFemaleHumansMaleMuscle ContractionMuscle FatigueMuscle StrengthMuscle, SkeletalPhysical Conditioning, HumanPhysical Exertion

Pub Type(s)

Journal Article
Randomized Controlled Trial

Language

eng

PubMed ID

28821950

Citation

Krentz, Joel R., et al. "The Effects of Supramaximal Versus Submaximal Intensity Eccentric Training when Performed Until Volitional Fatigue." European Journal of Applied Physiology, vol. 117, no. 10, 2017, pp. 2099-2108.
Krentz JR, Chilibeck PD, Farthing JP. The effects of supramaximal versus submaximal intensity eccentric training when performed until volitional fatigue. Eur J Appl Physiol. 2017;117(10):2099-2108.
Krentz, J. R., Chilibeck, P. D., & Farthing, J. P. (2017). The effects of supramaximal versus submaximal intensity eccentric training when performed until volitional fatigue. European Journal of Applied Physiology, 117(10), 2099-2108. https://doi.org/10.1007/s00421-017-3700-3
Krentz JR, Chilibeck PD, Farthing JP. The Effects of Supramaximal Versus Submaximal Intensity Eccentric Training when Performed Until Volitional Fatigue. Eur J Appl Physiol. 2017;117(10):2099-2108. PubMed PMID: 28821950.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The effects of supramaximal versus submaximal intensity eccentric training when performed until volitional fatigue. AU - Krentz,Joel R, AU - Chilibeck,Philip D, AU - Farthing,Jonathan P, Y1 - 2017/08/18/ PY - 2017/02/27/received PY - 2017/08/13/accepted PY - 2017/8/20/pubmed PY - 2018/7/3/medline PY - 2017/8/20/entrez KW - Lengthening contractions KW - Muscle hypertrophy KW - Muscle soreness KW - Muscular strength KW - Ratings of perceived exertion SP - 2099 EP - 2108 JF - European journal of applied physiology JO - Eur J Appl Physiol VL - 117 IS - 10 N2 - PURPOSE: Our purpose was to compare supramaximal versus submaximal intensity eccentric training performed until volitional fatigue. METHODS: Thirty-two young adults (19 males) were randomized into one of three groups: (1) ECC110 performed eccentric (ECC) only contractions at 110% of concentric (CON) 1-repetition maximum (1RM); (2) ECC80 performed ECC only contractions at 80% of CON 1RM; (3) a control group. Training progressed from 3 to 6 sets of unilateral ECC training of the elbow flexors over 8 weeks, with each set performed until volitional fatigue. Elbow flexors muscle thickness (via ultrasound) and 1RM were assessed pre- and post-training. Rating of perceived exertion (RPE) and muscle soreness was self-reported. RESULTS: Both ECC110 (+0.25 cm) and ECC80 (+0.21 cm) showed a greater post-training increase in muscle thickness compared to control (-0.01 cm) (p < 0.05), with no differences between ECC110 and ECC80. ECC80 (+1.23 kg) showed a greater post-training increase in strength compared to control (p < 0.05), while ECC110 (+0.76 kg) had no significant difference post-training vs. control (-0.01 kg). ECC80 had significantly lower average RPE scores than ECC110 (p < 0.05). CONCLUSIONS: Both supramaximal intensity eccentric training and submaximal intensity eccentric training are effective for increasing muscle size, but submaximal eccentric training is perceived to require less exertion than supramaximal training. These findings suggest that submaximal eccentric training may be an ideal strategy to increase muscle size and strength in individuals whose needs warrant training at a lower level of exertion. SN - 1439-6327 UR - https://www.unboundmedicine.com/medline/citation/28821950/The_effects_of_supramaximal_versus_submaximal_intensity_eccentric_training_when_performed_until_volitional_fatigue_ DB - PRIME DP - Unbound Medicine ER -