8‑week concurrent study
A recent concurrent‑training protocol ran 8 weeks of squats at 70–85% 1RM combined with running intervals at 90–105% MAS for sessions of 18–8 minutes, twice weekly — a structure aimed at building both strength and high‑speed aerobic capacity. — it’s practical if you want to combine barbell strength with sport‑specific conditioning. (x.com)
MAS‑focused interval blocks routinely produce measurable gains in maximal aerobic speed, with applied guides and reviews reporting improvements on the order of ~5–15% across an 8– to 12‑week block and case examples noting roughly a 10% gain after eight weeks. (topendsports.com) Strength work performed at intensities above the commonly cited ~65–75% 1RM threshold is enough to drive 1RM improvements, and controlled 8‑week strength programs frequently report lower‑body 1RM gains in the ballpark of 10–16% depending on training volume and athlete status. (sciencedirect.com) Meta‑analyses of concurrent training show a reproducible “interference” pattern: trained male athletes are more likely to experience blunted lower‑body strength adaptations when endurance is added, whereas untrained participants show smaller or no interference. (link.springer.com) Applied MAS programming typically prescribes long intervals of ~3–4 minutes repeated (total work blocks ≈12–24 minutes) and short‑interval formats that total about 6–12 minutes, aligning with the protocol’s use of one longer and one shorter conditioning block per week in applied setups. (topendsports.com) Practical scheduling guidance from recent reviews recommends separating strength and endurance bouts by roughly three hours when possible or prioritizing strength first to reduce acute molecular interference, and pooled analyses suggest running‑based HIIT causes less negative impact on strength gains than cycling‑based endurance in concurrent models. (frontiersin.org)
