Welcome to The Set & Rep Journal 📖🏋️
One study. One practical takeaway. No noise.
👋 Who we are
I'm an exercise physiologist. My job is to read the science so you don't have to — but also to make sure you actually understand it.
No 30-page papers. No overhyped headlines. Just real research, broken down simply.
🎯 Our purpose
To bridge the gap between the lab and the gym — especially when it comes to resistance training.
Every post will cover one peer-reviewed study on:
Muscle growth 💪
Strength development 🏋️
Training variables (sets, reps, load, rest, frequency)
And everything in between
🧠 How we do it
Each study will include:
What they actually did 🧪
What they actually found 📊
What it means for YOUR training 🎯
No bro-science. No cherry‑picking. No fear‑mongering.
🔁 What you can expect
A new study every [week / 15 days — choose your pace]
Simple infographics or AI‑generated visuals 🖼
Practical applications you can use in your next workout
📌 Our first study is coming soon
Hint: it's a classic — and it answers the question "how many sets do I really need?"
Until then — welcome. Grab your notebook. Your journal starts now.
— Your host, exercise physiologist & lifelong student of strength
The Set & Rep Journal
Resistance training, decoded.
One study. One practical takeaway. No noise.
👋 Who we are
I'm an exercise physiologist. My job is to read the science so you don't have to — but also to make sure you actually understand it.
No 30-page papers. No overhyped headlines. Just real research, broken down simply.
🎯 Our purpose
To bridge the gap between the lab and the gym — especially when it comes to resistance training.
Every post will cover one peer-reviewed study on:
Muscle growth 💪
Strength development 🏋️
Training variables (sets, reps, load, rest, frequency)
And everything in between
🧠 How we do it
Each study will include:
What they actually did 🧪
What they actually found 📊
What it means for YOUR training 🎯
No bro-science. No cherry‑picking. No fear‑mongering.
🔁 What you can expect
A new study every [week / 15 days — choose your pace]
Simple infographics or AI‑generated visuals 🖼
Practical applications you can use in your next workout
📌 Our first study is coming soon
Hint: it's a classic — and it answers the question "how many sets do I really need?"
Until then — welcome. Grab your notebook. Your journal starts now.
— Your host, exercise physiologist & lifelong student of strength
The Set & Rep Journal
Resistance training, decoded.
❤1
The Set & Rep Journal 🧪📊📈
Photo
📚 The Set & Rep Journal | Weekly Evidence-Based Insight No1.
How do muscles actually grow? And what’s the best way to train for it?
This week, we break down a classic paper by Brad Schoenfeld on the mechanisms of muscle hypertrophy**—one of the most important topics in exercise physiology.
🔬 **The science (simplified):
Muscle growth isn’t driven by just one factor. The research highlights three key mechanisms:
• Mechanical Tension – Lifting heavy loads creates high tension in muscle fibers, which is a primary driver of growth.
• Muscle Damage – Training causes micro-damage, which can stimulate repair and adaptation (though it’s not the main driver).
• Metabolic Stress – The “burn” you feel (from higher reps, shorter rest) contributes through cellular swelling and metabolic byproducts.
💡 So what does this mean for your training?
There’s no single “perfect” method.
✔️ Heavy weights (like powerlifting) → maximize mechanical tension
✔️ Moderate weights + shorter rest (like bodybuilding) → increase metabolic stress
✔️ Both approaches can build muscle—just through different pathways
👉 Key takeaway:
The most effective programs combine all three mechanisms through smart programming:
* Progressive overload
* Sufficient training volume
* Varied rep ranges and rest intervals
📈 Bottom line:
You don’t need to pick sides. The best results come from understanding the science—and applying it.
---
Follow *The Set & Rep Journal* for weekly breakdowns of research that actually improves your training.
#ExerciseScience #Hypertrophy #StrengthTraining #EvidenceBased #FitnessResearch #GymScience #ResistanceTraining
How do muscles actually grow? And what’s the best way to train for it?
This week, we break down a classic paper by Brad Schoenfeld on the mechanisms of muscle hypertrophy**—one of the most important topics in exercise physiology.
🔬 **The science (simplified):
Muscle growth isn’t driven by just one factor. The research highlights three key mechanisms:
• Mechanical Tension – Lifting heavy loads creates high tension in muscle fibers, which is a primary driver of growth.
• Muscle Damage – Training causes micro-damage, which can stimulate repair and adaptation (though it’s not the main driver).
• Metabolic Stress – The “burn” you feel (from higher reps, shorter rest) contributes through cellular swelling and metabolic byproducts.
💡 So what does this mean for your training?
There’s no single “perfect” method.
✔️ Heavy weights (like powerlifting) → maximize mechanical tension
✔️ Moderate weights + shorter rest (like bodybuilding) → increase metabolic stress
✔️ Both approaches can build muscle—just through different pathways
👉 Key takeaway:
The most effective programs combine all three mechanisms through smart programming:
* Progressive overload
* Sufficient training volume
* Varied rep ranges and rest intervals
📈 Bottom line:
You don’t need to pick sides. The best results come from understanding the science—and applying it.
---
Follow *The Set & Rep Journal* for weekly breakdowns of research that actually improves your training.
#ExerciseScience #Hypertrophy #StrengthTraining #EvidenceBased #FitnessResearch #GymScience #ResistanceTraining
❤4
📚 **THE SET & REP JOURNAL – WEEKLY STUDY BREAKDOWN** No2
🔥 **Does training closer to failure REALLY matter?**
This week we dive into a brand-new meta-analysis (2024) exploring the dose–response relationship between proximity to failure (RIR), strength, and muscle hypertrophy.
---
🧠 First—what is RIR?
RIR = *Reps In Reserve*
👉 0 RIR = you hit failure
👉 2 RIR = you could’ve done 2 more reps
---
🔬 **WHAT THE SCIENCE FOUND:**
🏋️ 1. Strength Gains → NOT very sensitive to RIR
* Strength improved across a wide range of RIR
* Whether you stopped at 0, 2, or even 4+ RIR…
👉 Results were similar
* All confidence intervals crossed “no effect” → meaning no clear advantage
💡 Translation:
You don’t NEED to train to failure to get stronger.
---
💪 **2. Muscle Hypertrophy → VERY dependent on RIR**
* Clear dose-response relationship
* The closer you train to failure…
➡️ the more muscle growth you get
* Models showed negative slopes → fewer RIR = more hypertrophy
💡 Translation:
👉 Effort matters A LOT for muscle growth.
---
📊 WHY THIS HAPPENS:
Closer to failure =
✔️ Higher motor unit recruitment
✔️ Greater fiber activation
✔️ More mechanical tension across all fibers
👉 Especially important for maximizing hypertrophy
---
⚖️ PRACTICAL APPLICATION:
🏋️♂️ For Strength:
* Stay 1–4 RIR most of the time
* Focus on:
✔️ Progressive overload
✔️ Good technique
✔️ Managing fatigue
🔥 For Hypertrophy:
* Spend most sets around 0–2 RIR
* Push close to failure (but not always failure)
* Combine with:
✔️ Enough volume
✔️ Controlled tempo
---
🚨 KEY TAKEAWAY:
👉 Strength ≠ Hypertrophy when it comes to effort
💪 Strength:
“Train smart, not always to failure”
🔥 Hypertrophy:
“Train HARD, close to failure”
---
📈 BOTTOM LINE:
The best programs don’t guess effort…
They CONTROL it using RIR.
---
Follow for weekly breakdowns of real research that actually improves your training 🔬💪
#Hypertrophy #StrengthTraining #ExerciseScience #RIR #EvidenceBasedFitness #GymScience #TrainingToFailure
🔥 **Does training closer to failure REALLY matter?**
This week we dive into a brand-new meta-analysis (2024) exploring the dose–response relationship between proximity to failure (RIR), strength, and muscle hypertrophy.
---
🧠 First—what is RIR?
RIR = *Reps In Reserve*
👉 0 RIR = you hit failure
👉 2 RIR = you could’ve done 2 more reps
---
🔬 **WHAT THE SCIENCE FOUND:**
🏋️ 1. Strength Gains → NOT very sensitive to RIR
* Strength improved across a wide range of RIR
* Whether you stopped at 0, 2, or even 4+ RIR…
👉 Results were similar
* All confidence intervals crossed “no effect” → meaning no clear advantage
💡 Translation:
You don’t NEED to train to failure to get stronger.
---
💪 **2. Muscle Hypertrophy → VERY dependent on RIR**
* Clear dose-response relationship
* The closer you train to failure…
➡️ the more muscle growth you get
* Models showed negative slopes → fewer RIR = more hypertrophy
💡 Translation:
👉 Effort matters A LOT for muscle growth.
---
📊 WHY THIS HAPPENS:
Closer to failure =
✔️ Higher motor unit recruitment
✔️ Greater fiber activation
✔️ More mechanical tension across all fibers
👉 Especially important for maximizing hypertrophy
---
⚖️ PRACTICAL APPLICATION:
🏋️♂️ For Strength:
* Stay 1–4 RIR most of the time
* Focus on:
✔️ Progressive overload
✔️ Good technique
✔️ Managing fatigue
🔥 For Hypertrophy:
* Spend most sets around 0–2 RIR
* Push close to failure (but not always failure)
* Combine with:
✔️ Enough volume
✔️ Controlled tempo
---
🚨 KEY TAKEAWAY:
👉 Strength ≠ Hypertrophy when it comes to effort
💪 Strength:
“Train smart, not always to failure”
🔥 Hypertrophy:
“Train HARD, close to failure”
---
📈 BOTTOM LINE:
The best programs don’t guess effort…
They CONTROL it using RIR.
---
Follow for weekly breakdowns of real research that actually improves your training 🔬💪
#Hypertrophy #StrengthTraining #ExerciseScience #RIR #EvidenceBasedFitness #GymScience #TrainingToFailure
📚 **THE SET & REP JOURNAL – WEEKLY STUDY BREAKDOWN**
No3
🔥 **Which HIIT method is actually better? Or… are they all the same?**
This week we break down a study comparing 3 different high-intensity training protocols and their effects on:
💪 Body composition
❤️ Cardiorespiratory fitness
🧠 Neuromuscular performance
---
## 🔬 **THE PROTOCOLS (8 WEEKS)**
🏃♂️ VICT (Continuous Training)
• 28 min steady at ~70% VO₂peak
• ❌ No rest (continuous effort)
⏱️ LI-HIIT (Long Intervals)
• 6 × 2 min @ ~85% VO₂peak
• 🕒 Rest: ~1–3 min between intervals
• 😵 Higher perceived effort (RPE ↑)
⚡️ SI-HIIT (Short Intervals)
• 12 × 30 sec @ ~125% max power
• ⏳ Rest: ~30–60 sec between intervals
• 😌 Lower RPE despite high intensity bursts
---
## 📊 **WHAT HAPPENED AFTER 8 WEEKS?**
📈 VO₂peak → ↑ 14%
💪 Muscle endurance → ↑ 12%
🏋️ Strength (knee extensors) → ↑ 1–3%
🧠 Neural activation → ↑ 1–3%
⚖️ Lean mass → ↑ 1–3%
🚨 No significant differences between protocols
👉 Yes… ALL methods worked equally well.
---
## 🧠 KEY INSIGHT
Even though:
* LI-HIIT felt harder 😵
* SI-HIIT was shorter ⏱️
* VICT was continuous 🏃♂️
👉 They all produced similar physiological adaptations
---
## ⏱️ WHY REST STRUCTURE MATTERS
Different rest = different stimulus:
• Short rest (SI-HIIT) → more metabolic stress 🔥
• Longer rest (LI-HIIT) → higher sustained intensity ❤️
• No rest (VICT) → steady cardiovascular load 🏃♂️
👉 But when total stimulus is matched…
your body adapts similarly
---
## 💡 **PRACTICAL APPLICATION**
⏳ Short on time?
→ SI-HIIT (~12 min) = efficient & effective
🔥 Want a tough session?
→ LI-HIIT = higher effort (RPE ↑)
🏃♂️ Prefer steady training?
→ VICT = simple & reliable
---
## 🚀 BOTTOM LINE
👉 There is NO “best” HIIT method
👉 The best method is the one you can stick to consistently
---
📈 **Train smart. Stay consistent. Let science guide you.**
Follow The Set & Rep Journal for weekly research breakdowns 🔬💪
#HIIT #ExerciseScience #VO2max #CardioTraining #FitnessResearch #EvidenceBased #EnduranceTraining
No3
🔥 **Which HIIT method is actually better? Or… are they all the same?**
This week we break down a study comparing 3 different high-intensity training protocols and their effects on:
💪 Body composition
❤️ Cardiorespiratory fitness
🧠 Neuromuscular performance
---
## 🔬 **THE PROTOCOLS (8 WEEKS)**
🏃♂️ VICT (Continuous Training)
• 28 min steady at ~70% VO₂peak
• ❌ No rest (continuous effort)
⏱️ LI-HIIT (Long Intervals)
• 6 × 2 min @ ~85% VO₂peak
• 🕒 Rest: ~1–3 min between intervals
• 😵 Higher perceived effort (RPE ↑)
⚡️ SI-HIIT (Short Intervals)
• 12 × 30 sec @ ~125% max power
• ⏳ Rest: ~30–60 sec between intervals
• 😌 Lower RPE despite high intensity bursts
---
## 📊 **WHAT HAPPENED AFTER 8 WEEKS?**
📈 VO₂peak → ↑ 14%
💪 Muscle endurance → ↑ 12%
🏋️ Strength (knee extensors) → ↑ 1–3%
🧠 Neural activation → ↑ 1–3%
⚖️ Lean mass → ↑ 1–3%
🚨 No significant differences between protocols
👉 Yes… ALL methods worked equally well.
---
## 🧠 KEY INSIGHT
Even though:
* LI-HIIT felt harder 😵
* SI-HIIT was shorter ⏱️
* VICT was continuous 🏃♂️
👉 They all produced similar physiological adaptations
---
## ⏱️ WHY REST STRUCTURE MATTERS
Different rest = different stimulus:
• Short rest (SI-HIIT) → more metabolic stress 🔥
• Longer rest (LI-HIIT) → higher sustained intensity ❤️
• No rest (VICT) → steady cardiovascular load 🏃♂️
👉 But when total stimulus is matched…
your body adapts similarly
---
## 💡 **PRACTICAL APPLICATION**
⏳ Short on time?
→ SI-HIIT (~12 min) = efficient & effective
🔥 Want a tough session?
→ LI-HIIT = higher effort (RPE ↑)
🏃♂️ Prefer steady training?
→ VICT = simple & reliable
---
## 🚀 BOTTOM LINE
👉 There is NO “best” HIIT method
👉 The best method is the one you can stick to consistently
---
📈 **Train smart. Stay consistent. Let science guide you.**
Follow The Set & Rep Journal for weekly research breakdowns 🔬💪
#HIIT #ExerciseScience #VO2max #CardioTraining #FitnessResearch #EvidenceBased #EnduranceTraining
❤4👏2
The Set & Rep Journal 🧪📊📈
Photo
📩 Extra Insight from The Set & Rep Journal
After some great feedback and questions from our subscribers 🙌, one topic came up that we didn’t explicitly cover in the infographic:
👉 “How often should I perform these HIIT protocols?”
Let’s break it down with science + practical application 🔬👇
---
## 🧠 What did the study actually do?
Participants followed the protocols for 8 weeks, but like most exercise studies:
❗️ Frequency was controlled but not the main variable studied
👉 Typically performed ~2–3 sessions per week
---
## 📊 Evidence-based recommendation
Based on:
* This study
* Broader HIIT literature
* Recovery physiology
👉 A smart frequency is:
### ✅ 2–3 HIIT sessions per week
Why?
✔️ Allows enough stimulus for adaptation
✔️ Gives time for recovery (central + muscular)
✔️ Helps maintain performance quality in each session
---
## ⚖️ Can you do more?
Yes—but here’s the catch:
🔺 3–4+ sessions/week
* Possible for trained individuals
* BUT increases fatigue risk 😵
* May reduce session quality
🔻 1–2 sessions/week
* Still effective for beginners
* Great for combining with strength training 💪
---
## 🔥 How to choose based on your goal
💪 Hypertrophy + Strength focus
→ 1–2 HIIT sessions/week (support work)
❤️ Cardio / VO₂max focus
→ 2–3 HIIT sessions/week
⏳ General fitness / lifestyle
→ 2 sessions/week is more than enough
---
## 🚀 Key takeaway
👉 HIIT is powerful… but also demanding
📈 More is NOT always better
📉 Better is: high-quality sessions + proper recovery
---
Appreciate the question—this is exactly the kind of discussion that makes this community stronger 💚
Keep them coming 🔬💪
After some great feedback and questions from our subscribers 🙌, one topic came up that we didn’t explicitly cover in the infographic:
👉 “How often should I perform these HIIT protocols?”
Let’s break it down with science + practical application 🔬👇
---
## 🧠 What did the study actually do?
Participants followed the protocols for 8 weeks, but like most exercise studies:
❗️ Frequency was controlled but not the main variable studied
👉 Typically performed ~2–3 sessions per week
---
## 📊 Evidence-based recommendation
Based on:
* This study
* Broader HIIT literature
* Recovery physiology
👉 A smart frequency is:
### ✅ 2–3 HIIT sessions per week
Why?
✔️ Allows enough stimulus for adaptation
✔️ Gives time for recovery (central + muscular)
✔️ Helps maintain performance quality in each session
---
## ⚖️ Can you do more?
Yes—but here’s the catch:
🔺 3–4+ sessions/week
* Possible for trained individuals
* BUT increases fatigue risk 😵
* May reduce session quality
🔻 1–2 sessions/week
* Still effective for beginners
* Great for combining with strength training 💪
---
## 🔥 How to choose based on your goal
💪 Hypertrophy + Strength focus
→ 1–2 HIIT sessions/week (support work)
❤️ Cardio / VO₂max focus
→ 2–3 HIIT sessions/week
⏳ General fitness / lifestyle
→ 2 sessions/week is more than enough
---
## 🚀 Key takeaway
👉 HIIT is powerful… but also demanding
📈 More is NOT always better
📉 Better is: high-quality sessions + proper recovery
---
Appreciate the question—this is exactly the kind of discussion that makes this community stronger 💚
Keep them coming 🔬💪
👍4👏2
📚 THE SET & REP JOURNAL – WEEKLY STUDY BREAKDOWN
No4.
🔥 More sets? More days? What actually builds more muscle & strength?
This week we break down a large meta-analysis (67 studies, 2000+ participants) exploring how:
🏋️ Weekly training volume (sets)
📅 Weekly training frequency (sessions)
affect muscle hypertrophy and strength gains
---
## 🔬 THE BIG QUESTION
👉 Is more always better?
👉 And does frequency matter as much as volume?
---
## 📊 KEY FINDINGS
### 💪 1. Volume = KING for muscle growth
📈 More weekly sets → more hypertrophy
✅ 100% probability of a positive relationship
BUT…
⚠️ Diminishing returns exist
* Gains slow down after ~20–30 sets per muscle/week
* More is not always better… just more fatigue 😵
---
### 🏋️ 2. Volume also increases strength
📈 More volume → more strength
BUT…
⚠️ Even bigger diminishing returns
* Strength plateaus earlier than hypertrophy
* Excess volume = lower efficiency
---
### 📅 3. Frequency = Different story
💪 Hypertrophy
❌ No clear benefit of higher frequency
👉 You can grow with 1–3 sessions/week per muscle
🏋️ Strength
✅ Higher frequency helps
👉 More practice = better neural adaptations
BUT…
⚠️ Still diminishing returns
---
## 🧠 WHY THIS HAPPENS
• Volume → drives mechanical tension + stimulus accumulation
• Frequency → improves skill, coordination, neural efficiency
👉 That’s why:
* Hypertrophy depends more on total work
* Strength depends on practice + exposure
---
## ⚖️ PRACTICAL APPLICATION
### 💪 For Hypertrophy
✔️ 10–20 sets / muscle / week
✔️ Up to ~20–30 if advanced
✔️ Frequency: flexible (1–3x/week)
👉 Focus on total weekly volume
---
### 🏋️ For Strength
✔️ 6–15 sets / muscle / week
✔️ Frequency: 2–5x/week
✔️ Spread volume across sessions
👉 Focus on both volume AND frequency
---
## 🚨 KEY TAKEAWAY
👉 Volume and frequency are NOT equal
💪 Hypertrophy → Volume is the driver
🏋️ Strength → Volume + Frequency both matter
---
## 🚀 BOTTOM LINE
📈 Do enough volume to grow
📅 Use frequency to manage fatigue and improve performance
👉 Smart programming > just doing more
---
Follow The Set & Rep Journal for weekly science-based insights 🔬💪
#Hypertrophy #StrengthTraining #ExerciseScience #TrainingVolume #WorkoutScience #EvidenceBasedFitness #GymScience
No4.
🔥 More sets? More days? What actually builds more muscle & strength?
This week we break down a large meta-analysis (67 studies, 2000+ participants) exploring how:
🏋️ Weekly training volume (sets)
📅 Weekly training frequency (sessions)
affect muscle hypertrophy and strength gains
---
## 🔬 THE BIG QUESTION
👉 Is more always better?
👉 And does frequency matter as much as volume?
---
## 📊 KEY FINDINGS
### 💪 1. Volume = KING for muscle growth
📈 More weekly sets → more hypertrophy
✅ 100% probability of a positive relationship
BUT…
⚠️ Diminishing returns exist
* Gains slow down after ~20–30 sets per muscle/week
* More is not always better… just more fatigue 😵
---
### 🏋️ 2. Volume also increases strength
📈 More volume → more strength
BUT…
⚠️ Even bigger diminishing returns
* Strength plateaus earlier than hypertrophy
* Excess volume = lower efficiency
---
### 📅 3. Frequency = Different story
💪 Hypertrophy
❌ No clear benefit of higher frequency
👉 You can grow with 1–3 sessions/week per muscle
🏋️ Strength
✅ Higher frequency helps
👉 More practice = better neural adaptations
BUT…
⚠️ Still diminishing returns
---
## 🧠 WHY THIS HAPPENS
• Volume → drives mechanical tension + stimulus accumulation
• Frequency → improves skill, coordination, neural efficiency
👉 That’s why:
* Hypertrophy depends more on total work
* Strength depends on practice + exposure
---
## ⚖️ PRACTICAL APPLICATION
### 💪 For Hypertrophy
✔️ 10–20 sets / muscle / week
✔️ Up to ~20–30 if advanced
✔️ Frequency: flexible (1–3x/week)
👉 Focus on total weekly volume
---
### 🏋️ For Strength
✔️ 6–15 sets / muscle / week
✔️ Frequency: 2–5x/week
✔️ Spread volume across sessions
👉 Focus on both volume AND frequency
---
## 🚨 KEY TAKEAWAY
👉 Volume and frequency are NOT equal
💪 Hypertrophy → Volume is the driver
🏋️ Strength → Volume + Frequency both matter
---
## 🚀 BOTTOM LINE
📈 Do enough volume to grow
📅 Use frequency to manage fatigue and improve performance
👉 Smart programming > just doing more
---
Follow The Set & Rep Journal for weekly science-based insights 🔬💪
#Hypertrophy #StrengthTraining #ExerciseScience #TrainingVolume #WorkoutScience #EvidenceBasedFitness #GymScience
👍5🔥2