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Research Shorts

Podcast by Research Shorts Editorial

English

Technology & science

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About Research Shorts

Research moves fast. Most people don't. Breaking down research studies into clear, concise episodes. Topics include sports science, human performance, health, and innovation. AI-powered delivery means we can cover more research, more frequently. No academic jargon. No gatekeeping.

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24 episodes

episode T-Junction Hamstring Injuries: The Hidden Muscle Loss That Persists Months After Return to Play artwork

T-Junction Hamstring Injuries: The Hidden Muscle Loss That Persists Months After Return to Play

Hamstring injuries are the most common and costly injury in professional soccer — and they're getting worse. But not all hamstring injuries are equal. The T-junction, where the long and short heads of the biceps femoris meet distally, represents one of the most poorly understood and potentially most dangerous subtypes — with re-injury rates as high as 54%. Research from an English Premier League club is now showing something that should concern every performance and medical team: months after T-junction hamstring injury and full return to play, a significant and consistent deficit in biceps femoris muscle thickness remains in the previously injured leg — visible on ultrasound, measurable, and absent in uninjured teammates. This episode breaks down what the muscle architecture data actually shows, why T-junction injuries appear to behave differently from other hamstring injuries, what the muscle thickness deficit means for re-injury risk, and what rehabilitation teams should be targeting before clearing players to return. If hamstring injury prevention, return to play, or muscle architecture assessment sits anywhere in your role — this episode belongs on your list.

17 May 2026 - 22 min
episode Plyometrics Create Stiff Tendons. Just Not as Fast as You Think artwork

Plyometrics Create Stiff Tendons. Just Not as Fast as You Think

Plyometrics are everywhere. Every gym program, every pre-season block, every speed development plan has them. But there's a catch most coaches never mention — the tendon adaptation everyone is chasing doesn't show up in weeks. It takes years. Four years of tracking elite jumpers revealed that tendon stiffness — a key marker of injury resilience and force transfer — only meaningfully increases with sustained, long-term plyometric loading. Short blocks don't cut it. The muscle gets stronger. The nervous system adapts. But the tendon stays behind until the cumulative loading finally crosses the threshold. This episode breaks down what the data actually shows, why tendon stiffness matters more than most coaches realize, and what long-term plyometric programming needs to look like if the goal is genuinely protecting and developing athletes — not just checking a box in the pre-season plan.

12 May 2026 - 44 min
episode Every Workout Has a Hidden Price Tag. Now We Know What It Is. artwork

Every Workout Has a Hidden Price Tag. Now We Know What It Is.

Coaches have been programming training for decades based on heart rate zones, GPS data, and how hard athletes say they feel. There's just one problem. None of those metrics actually tell you what's happening inside the muscle itself. A new case report by Martin Buchheit and Paul Laursen just changed that. Using a portable electrical stimulation device called Myocene, researchers measured something called low-frequency fatigue — a direct readout of muscle contractile impairment — immediately after nine different training sessions. Zone 2 runs. Sprint intervals. Small-sided games. Gym sessions. All-out cycling efforts. Every single one produced a completely different biological signature. The results were striking. Easy Zone 2 runs barely registered. All-out sprint intervals crushed contractility to below 80% of baseline. But here's where it gets genuinely interesting — two sessions could feel equally hard yet produce completely different recovery timelines. One workout rebounds in 4 hours. Another takes 48 hours to clear. And your heart rate data would never tell you the difference. The study also found something coaches can use starting tomorrow. The athlete's subjective perception of muscle heaviness — not overall effort, not heart rate — correlated with objective fatigue at r = -0.89. Almost perfectly. Meaning the body already knows its price tag. It just needed the right question. This episode breaks down what the data actually means, why eccentric load is the real hidden cost driver, and how to sequence a training week once you understand the true biological bill of each session. Some workouts cost 4 hours. Others cost 48. Now there's proof.

5 May 2026 - 23 min
episode Scientists Put Sprinting and Jumping Head to Head. It Wasn't Close artwork

Scientists Put Sprinting and Jumping Head to Head. It Wasn't Close

What if the most sophisticated athletic training tool in the world was something you've been doing since you were five years old? A group of researchers in France just published a study that should make every strength and conditioning coach stop and pay attention. They strapped 16 athletes to force plates sampling at 2000 times per second and made them do everything — drop jumps, hurdle jumps, ankle rebounds, skipping — and then had them sprint flat out. The results weren't even close. Sprinting produced 20% more ground reaction force than drop jumps. Contact times were 50% shorter. And here's the part that's genuinely surprising — you don't even need to go full speed. Running at 90% of max produced basically identical results to an all-out sprint. That means coaches are putting athletes through complex, equipment-heavy jump programs when a simple 30-meter sprint does more. More force. Faster muscle activation. Better stretch-shortening cycle stimulus. All in one rep. This episode breaks down exactly what the science says, what it means for how athletes should train, and why this might be the most overlooked performance insight of the decade. The best training tool isn't in a gym. It's a straight line of tarmac. This one will change how you think about athletic performance forever.

3 May 2026 - 13 min
episode The Bilateral vs. Unilateral Training Debate artwork

The Bilateral vs. Unilateral Training Debate

Coaches have been arguing about it for decades. Should athletes train on one leg or two? Is the Bulgarian split squat superior to the back squat? Do unilateral exercises build more muscle because they isolate the target muscle better? A meta-analysis finally dug into the data — and the answer is more nuanced than either camp wants to admit. For muscle growth, it doesn't matter. Bilateral or unilateral, the hypertrophy response is essentially the same. But for strength? The body follows a ruthless principle of specificity. Train bilateral, get better at bilateral. Train unilateral, get better at unilateral. There's no crossover advantage — no free lunch. This episode breaks down what the research actually shows, why the "unilateral is superior" argument doesn't hold up for muscle building, and what this means for how athletes and coaches should actually be selecting exercises — without the dogma.

30 Apr 2026 - 21 min
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