Rest periods and tempo study notes

Rest periods

  • Rest periods are not typically the primary lever to alter frequently; they should align with the training adaptation you’re targeting.
  • General concept: adjust rest to support the desired adaptation rather than chasing fatigue for fatigue’s sake.
  • Maximum strength adaptations
    • Target: high effort loads with high intensity.
    • Intensity: ext{load}
      ightarrow ext{80% of 1RM or higher}
    • Repetition range: typically: one to six reps per set (0–6 reps).
    • Rest: 2extto5extminutes2 ext{ to }5 ext{ minutes} between sets to allow substantial recovery.
  • Power adaptations
    • Similar rest to max strength: lengthy recovery to permit high-quality attempts.
  • Hypertrophy adaptations
    • Goal: accumulation of time under tension and some muscle damage.
    • Rest: shorter, typically 30extsextto1.5extminutes30 ext{s} ext{ to } 1.5 ext{ minutes} to maintain metabolic stress and enable multiple sets.
  • Muscular endurance / control / stability adaptations
    • Rest: about 30exts30 ext{s} to keep the muscles enduring fatigue while still enabling efficiency of technique.
  • Fatigue considerations
    • Some fatigue is acceptable and expected because part of the goal is to train the body to tolerate and repeat effort under fatigue.
  • Practical takeaway
    • Don’t obsess over rest duration in isolation; pick rest that matches the adaptation you want and stay consistent with your chosen target (strength, hypertrophy, endurance).
  • Ambiguity note from transcript
    • A sentence in the transcript says: "we won't need to be incorporating that two to five minutes of rest" in the max-strength context. This appears to be a contradiction with the earlier guidance. Standard practice aligns with 2–5 minutes rest for high-intensity strength work; treat the longer rest as the intended guideline unless your coach specifies otherwise.

Tempo (speed of a rep)

  • Definition
    • Tempo describes how fast each rep is performed, separated into phases: eccentric (lowering), pause (at the bottom), and concentric (lifting).
  • Notation
    • Tempo is typically denoted as three numbers plus an optional x for explosive intent, applied to the eccentric, pause, and concentric phases respectively. Specifically:
    • Example: 3 0 13 \ 0 \ 1 → 3 seconds eccentric, 0 seconds pause, 1 second concentric.
    • Example: 2 1 x2 \ 1 \ x → 2 seconds eccentric, 1 second pause at the bottom, concentric as fast as possible (explosive).
  • Back squat example (tempo interpretation)
    • Two-second eccentric, one-second pause at bottom, and then explosive concentric lift: 2 1 x2 \ 1 \ x
    • Practical reading: 2 seconds down, 1 second pause, then explode up.
  • Purpose of tempo
    • Tempo directly controls time under tension (TUT) per rep and per set.
    • Time under tension is a key factor for hypertrophy; longer TUT generally increases hypertrophic stimulus, assuming technique remains solid and load remains appropriate.
  • Time under tension (TUT) and adaptations
    • Definition: the duration the muscle stays under work during a set.
    • Primary hypertrophy driver: longer TUT tends to promote hypertrophy via metabolic stress and muscle damage.
  • Max strength adaptations (neural-driven)
    • TUT range for max strength tends to be relatively short, emphasizing neural drive and efficient motor unit recruitment.
    • Example ranges mentioned:
    • Bench press: heavy load (~85 ext{% of }1RM) with tempo 3 0 13 \, 0 \, 1 (4 seconds per rep) for 5 reps → total set TUT: 5imes4=20exts5 imes 4 = 20 ext{s}, which sits in the max-strength window.
    • Back squat: load around ~90 ext{% of }1RM with tempo 3 0 23 \, 0 \, 2 (5 seconds per rep) for 3 reps → total set TUT: 3imes5=15exts3 imes 5 = 15 ext{s}.
  • Hypertrophy ranges by TUT
    • Functional hypertrophy (hypertrophy with some neural gains)
    • Time under tension target: 20extto40extseconds20 ext{ to } 40 ext{ seconds} per set.
    • Example: tempo 2 0 12 \, 0 \, 1 (3 seconds per rep) with 10 reps → total TUT: 3imes10=30exts3 imes 10 = 30 ext{s}.
    • Structural hypertrophy (primarily muscular growth with less performance carryover)
    • Time under tension target: around 60extseconds60 ext{ seconds} per set.
    • Example: a scenario where a combined tempo produces roughly 60 seconds per set (e.g., faster reps would need more reps to reach 60 seconds).
  • Functional hypertrophy vs structural hypertrophy (definitions)
    • Functional hypertrophy: increase in muscle size accompanied by an increase in performance capacity (functional improvements).
    • Structural hypertrophy: mainly increases in muscle size without substantial improvements in performance or explosive strength.
  • Example: front squat with differing tempos
    • Baseline (free speed): 1 1 11 \ 1 \ 1? The transcript describes: one-second eccentric, no pause, one-second concentric → total ~2 seconds per rep; for 8 reps: 8imes2=16exts8 imes 2 = 16 ext{s} per set, which sits toward the max-strength end.
    • Tempo-enhanced: 4 1 14 \ 1 \ 1 → four seconds eccentric, one-second pause at bottom, one-second concentric → 6 seconds per rep; for 8 reps: 8imes6=48exts8 imes 6 = 48 ext{s} per set, which shifts toward structural hypertrophy by increasing TUT.
  • Practical application: aligning tempo with desired adaptations
    • Keep sets, reps, and load constant and adjust tempo to move the set into the target TUT range.
    • Use tempo variations to emphasize the desired adaptation without changing external loads or volumes (as a way to periodize for different outcomes).
  • Quick recap of tempo-to-adaptation mapping (conceptual)
    • Short TUT (lower total seconds per set) favors neural adaptations and max strength.
    • Moderate TUT (≈20–40 seconds per set) favors functional hypertrophy with some neural involvement.
    • Longer TUT (≈60 seconds per set) favors structural hypertrophy with substantial muscle growth.
  • Connections to broader principles
    • Specificity: tempo and TUT should match the targeted adaptation (strength vs hypertrophy).
    • Progressive overload: tempo can be one lever to progressively increase stimulus when the load/reps remain constant.
    • Fatigue management: longer TUT can increase fatigue; ensure form and safety are maintained.
  • Equations and examples referenced (for study)
    • Load intensity for strength focus: extLoad<br/>ightarrowext0.80imesext1RMextorhigherext{Load} <br /> ightarrow ext{0.80} imes ext{1RM} ext{ or higher}
    • Rest intervals for various aims: extRest<em>extStrength/Powerightarrow[2,5]extminext{Rest}<em>{ ext{Strength/Power}} ightarrow [2, 5] ext{ min}, extRest</em>extHypertrophy<br/>ightarrow[30exts,90exts]ext{Rest}</em>{ ext{Hypertrophy}} <br /> ightarrow [30 ext{s}, 90 ext{s}]
    • Time under tension per set: extTUT<em>extset=nimes(T</em>ecc+T<em>pause+T</em>con)ext{TUT}<em>{ ext{set}} = n imes (T</em>{ecc} + T<em>{pause} + T</em>{con})
    • Example calculations:
    • Bench press: 5extrepsimes(3+0+1)=20exts5 ext{ reps} imes (3 + 0 + 1) = 20 ext{s} (with tempo 3 0 13 \ 0 \ 1 and 85% 1RM).
    • Back squat: 3extrepsimes(3+0+2)=15exts3 ext{ reps} imes (3 + 0 + 2) = 15 ext{s} (with tempo 3 0 23 \ 0 \ 2 and 90% 1RM).
    • Push-ups: 10extrepsimes(2+0+1)=30exts10 ext{ reps} imes (2 + 0 + 1) = 30 ext{s} (with tempo 2 0 12 \ 0 \ 1).
  • Real-world implications
    • When programming, decide first whether the goal is maximal strength, hypertrophy, or endurance, then set tempo and rest ranges accordingly to induce the desired adaptations while maintaining safety and technique.
  • Quick takeaway
    • Tempo and rest are powerful, tunable levers to steer adaptations through time under tension and recovery demands, often without changing the external load or the number of sets and reps.

End of notes