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19.10.2018 | Original Research Article | Ausgabe 12/2018 Open Access

Sports Medicine 12/2018

Adaptations to Concurrent Training in Combination with High Protein Availability: A Comparative Trial in Healthy, Recreationally Active Men

Zeitschrift:
Sports Medicine > Ausgabe 12/2018
Autoren:
Baubak Shamim, Brooke L. Devlin, Ryan G. Timmins, Paul Tofari, Connor Lee Dow, Vernon G. Coffey, John A. Hawley, Donny M. Camera
Wichtige Hinweise

Electronic supplementary material

The online version of this article (https://​doi.​org/​10.​1007/​s40279-018-0999-9) contains supplementary material, which is available to authorized users.

Abstract

Background

We implemented a high-protein diet (2 g·kg−1·d−1) throughout 12 weeks of concurrent exercise training to determine whether interferences to adaptation in muscle hypertrophy, strength and power could be attenuated compared to resistance training alone.

Methods

Thirty-two recreationally active males (age: 25 ± 5 years, body mass index: 24 ± 3 kg·m−2; mean ± SD) performed 12 weeks of either isolated resistance (RES; n = 10) or endurance (END; n = 10) training (three sessions·w−1), or concurrent resistance and endurance (CET; n = 12) training (six sessions·w−1). Maximal strength (1RM), body composition and power were assessed pre- and post-intervention.

Results

Leg press 1RM increased ~ 24 ± 13% and ~ 33 ± 16% in CET and RES from PRE-to-POST (P < 0.001), with no difference between groups. Total lean mass increased ~ 4% in both CET and RES from PRE-to-POST (P < 0.001). Ultrasound estimated vastus lateralis volume increased ~ 15% in CET and ~ 11% in RES from PRE-to-POST (P < 0.001), with no difference between groups. Wingate peak power relative to body mass displayed a trend (P = 0.053) to be greater in RES (12.5 ± 1.6 W·kg BM−1) than both CET (10.8 ± 1.7 W·kg BM−1) and END (10.9 ± 1.8 W·kg BM−1) at POST. Absolute VO2peak increased 6.9% in CET and 12% in END from PRE-to-POST (P < 0.05), with no difference between groups.

Conclusion

Despite high protein availability, select measures of anaerobic power-based adaptations, but not muscle strength or hypertrophy, appear susceptible to ‘interference effects’ with CET and should be closely monitored throughout training macro-cycles.
Trials Registry: This trial was registered with the Australian-New Zealand Clinical Trials Registry (ACTRN12617001229369).

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Zusatzmaterial
Supplementary material 1 (DOCX 43 kb)
40279_2018_999_MOESM1_ESM.docx
Supplementary material 2 (XLSX 15 kb)
40279_2018_999_MOESM2_ESM.xlsx
Supplementary material 3 (XLSX 13 kb)
40279_2018_999_MOESM3_ESM.xlsx
Supplementary material 4 (DOCX 25 kb)
40279_2018_999_MOESM4_ESM.docx
Supplementary material 5 (DOCX 199 kb)
40279_2018_999_MOESM5_ESM.docx
Supplementary material 6 (DOCX 65 kb)
40279_2018_999_MOESM6_ESM.docx
Supplementary material 7 (DOCX 146 kb)
40279_2018_999_MOESM7_ESM.docx
Supplementary material 8 (XLSX 338 kb)
40279_2018_999_MOESM8_ESM.xlsx
Literatur
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