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High intensity interval training does not impair strength gains in response to resistance training in premenopausal women.

Abstract：

PURPOSE:To compare the increases in upper- and lower-body muscle strength in premenopausal women performing resistance training (RT) alone or alongside concurrent high-intensity interval training (CT). METHODS:Sixteen women (26-40 years) were randomly assigned into two groups that performed either RT or CT. Both groups performed the same RT program; however, CT performed additional high-intensity interval training (HIIT) on a bicycle ergometer before RT. The study lasted 8 weeks and the participants were tested for ten repetition maximum (10RM) load in elbow flexion (barbell biceps curl) and knee extension exercises pre- and post-intervention. RT was performed with 10-12 repetitions to self-determined repetition maximum in the first four weeks and then progressed to 8-10. During CT, HIIT was performed before RT with six 1-min bouts at 7-8 of perceived subjective exertion (RPE) and then progressed to eight bouts at 9-10 RPE. RESULTS:Analysis of variance revealed significant increases in upper and lower body strength for both the RT and CT groups. Biceps barbell curl 10RM load increased from 12.9 ± 3.2 kg to 14 ± 1.5 kg in CT (p < 0.05) and from 13 ± 1.8 kg to 15.9 ± 2.5 kg in RT (p < 0.05), with no significant between-groups differences. Knee extension 10RM increase from 31.9 ± 11.6 kg to 37.5 ± 8.5 kg for CT (p < 0.05) and from 30.6 ± 8.6 kg to 41.2 ± 7.4 kg for RT (p < 0.05). CONCLUSION:In conclusion, performing HIIT on a cycle ergometer before resistance training does not seem to impair muscle strength increases in the knee extensors or elbow flexors of pre-menopausal women. This information should be considered when prescribing exercise sessions, since both activities may be combined without negative effects in muscle strength.

journal_name

Eur J Appl Physiol

journal_title

European journal of applied physiology

authors

Gentil P,de Lira CAB,Filho SGC,La Scala Teixeira CV,Steele J,Fisher J,Carneiro JA,Campos MH

doi

10.1007/s00421-017-3614-0

subject

Has Abstract

pub_date

2017-06-01 00:00:00

pages

1257-1265

issue

eissn

1439-6319

issn

1439-6327

pii

10.1007/s00421-017-3614-0

journal_volume

117

pub_type

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High intensity interval training does not impair strength gains in response to resistance training in premenopausal women.