Ignacio Fernández Jarillo
@igfjarillo.bsky.social
PhD student INEFC | Collaborator inefc-grceib.cat | MsC Sports Science & Physiology | Interested in oxygen transport, metabolism and endurance performance
This video explains how Pogačar is beating Vingegaard lately: @teamemiratesuae.bsky.social sets a hard pace early on the climbs, draining Vingo’s W′. Then Pogi attacks, using his superior W′ to finish him off.
m.youtube.com/watch?v=bgF1...
m.youtube.com/watch?v=bgF1...
Pogacar revienta a Vingegaard en 2´30" | Juan Flecha
YouTube video by Comouna Flecha
m.youtube.com
July 17, 2025 at 4:38 PM
This video explains how Pogačar is beating Vingegaard lately: @teamemiratesuae.bsky.social sets a hard pace early on the climbs, draining Vingo’s W′. Then Pogi attacks, using his superior W′ to finish him off.
m.youtube.com/watch?v=bgF1...
m.youtube.com/watch?v=bgF1...
I find it interesting to compare Hautacam times in TDF22 and TDF25. Pogačar, that day climbed in 37:38 (VAM 1696 m/h), today in 34:56 (1828 m/h). Improvement of 132 m/h. Vingegaard, that day 36:34 (1747 m/h). Today, 37:06 (1720 m/h). Worse by 27 m/h... Itzulia 2024 comes to my mind...
#TDF2025
#TDF2025
July 17, 2025 at 4:36 PM
I find it interesting to compare Hautacam times in TDF22 and TDF25. Pogačar, that day climbed in 37:38 (VAM 1696 m/h), today in 34:56 (1828 m/h). Improvement of 132 m/h. Vingegaard, that day 36:34 (1747 m/h). Today, 37:06 (1720 m/h). Worse by 27 m/h... Itzulia 2024 comes to my mind...
#TDF2025
#TDF2025
Reposted by Ignacio Fernández Jarillo
Muy importante, en verano si vais a la playa:
June 28, 2025 at 7:14 AM
Muy importante, en verano si vais a la playa:
Wonderful podcast. If Ginés Viscor is speaking, you listen. 🙏🏻
Amazing work from Fissac as always — making physiology accessible to everyone.
www.linkedin.com/posts/ignaci...
Amazing work from Fissac as always — making physiology accessible to everyone.
www.linkedin.com/posts/ignaci...
Wonderful podcast. | Ignacio Fernandez Jarillo
Wonderful podcast. If Ginés Viscor is speaking, you listen. 🙏🏻
Amazing work from Fissac - Fisiología, salud y actividad física as always — making physiology accessible to everyone.
www.linkedin.com
June 27, 2025 at 9:26 PM
Wonderful podcast. If Ginés Viscor is speaking, you listen. 🙏🏻
Amazing work from Fissac as always — making physiology accessible to everyone.
www.linkedin.com/posts/ignaci...
Amazing work from Fissac as always — making physiology accessible to everyone.
www.linkedin.com/posts/ignaci...
An ongoing case study: I love working alongside dedicated athletes. Here are some insights into Xavi Estivill’s progress over the past 18 months.
June 27, 2025 at 12:50 PM
An ongoing case study: I love working alongside dedicated athletes. Here are some insights into Xavi Estivill’s progress over the past 18 months.
Can’t be prouder of this guy! He crushed it with a 4h32 at Vitoria 70.3. We’ve been working together for over 1.5 years now. The last 7 months we’ve finally had uninterrupted training, after a challenging first 10 months marked by bike accidents and health issues.
June 10, 2025 at 8:20 AM
Can’t be prouder of this guy! He crushed it with a 4h32 at Vitoria 70.3. We’ve been working together for over 1.5 years now. The last 7 months we’ve finally had uninterrupted training, after a challenging first 10 months marked by bike accidents and health issues.
Aaand the 10km Laredo prep continues.
Last Sunday we wrapped up the penultimate training week with an unexpected tactical 5k race—managed to squeeze into 2nd place after a 54” kick in the final 300m, finishing in 16:14.
Rounded out the day with 6x800m of easy LT2 (BLa: 1.9). 10 days till go time!
Last Sunday we wrapped up the penultimate training week with an unexpected tactical 5k race—managed to squeeze into 2nd place after a 54” kick in the final 300m, finishing in 16:14.
Rounded out the day with 6x800m of easy LT2 (BLa: 1.9). 10 days till go time!
May 14, 2025 at 2:02 PM
Aaand the 10km Laredo prep continues.
Last Sunday we wrapped up the penultimate training week with an unexpected tactical 5k race—managed to squeeze into 2nd place after a 54” kick in the final 300m, finishing in 16:14.
Rounded out the day with 6x800m of easy LT2 (BLa: 1.9). 10 days till go time!
Last Sunday we wrapped up the penultimate training week with an unexpected tactical 5k race—managed to squeeze into 2nd place after a 54” kick in the final 300m, finishing in 16:14.
Rounded out the day with 6x800m of easy LT2 (BLa: 1.9). 10 days till go time!
Last week, I had the opportunity to teach one of the sessions of the Triathlon course for Sports Science students at INEFC Barcelona. We explored physiological assessment in endurance sports from an integrative perspective.
May 14, 2025 at 1:53 PM
Last week, I had the opportunity to teach one of the sessions of the Triathlon course for Sports Science students at INEFC Barcelona. We explored physiological assessment in endurance sports from an integrative perspective.
Open water project, brutal weekend, mega team. The learning never stops.
March 31, 2025 at 10:28 PM
Open water project, brutal weekend, mega team. The learning never stops.
March 29, 2025 at 5:45 AM
It doesn’t matter if I’m in the middle of a base phase or a specific training block—I’m always loyal to the once-a-week LT1 session.
No need to be complicated: ≈35 minutes of total work, broken into intervals. I aim for a Borg RPE of around 11–12. This is always an internal load driven session.
No need to be complicated: ≈35 minutes of total work, broken into intervals. I aim for a Borg RPE of around 11–12. This is always an internal load driven session.
March 25, 2025 at 10:07 AM
It doesn’t matter if I’m in the middle of a base phase or a specific training block—I’m always loyal to the once-a-week LT1 session.
No need to be complicated: ≈35 minutes of total work, broken into intervals. I aim for a Borg RPE of around 11–12. This is always an internal load driven session.
No need to be complicated: ≈35 minutes of total work, broken into intervals. I aim for a Borg RPE of around 11–12. This is always an internal load driven session.
2.5 years of running after a 4-year hiatus.
1. Ran 15:56 over 5km yesterday.
2. First overall win since 2016.
3. First time under 16 minutes since 2015, when I ran 15:54 at the Triathlon Catalan Championships. Back then, I was also swimming 1’12/100m over 1500m, among other performances.
1. Ran 15:56 over 5km yesterday.
2. First overall win since 2016.
3. First time under 16 minutes since 2015, when I ran 15:54 at the Triathlon Catalan Championships. Back then, I was also swimming 1’12/100m over 1500m, among other performances.
March 24, 2025 at 9:30 AM
2.5 years of running after a 4-year hiatus.
1. Ran 15:56 over 5km yesterday.
2. First overall win since 2016.
3. First time under 16 minutes since 2015, when I ran 15:54 at the Triathlon Catalan Championships. Back then, I was also swimming 1’12/100m over 1500m, among other performances.
1. Ran 15:56 over 5km yesterday.
2. First overall win since 2016.
3. First time under 16 minutes since 2015, when I ran 15:54 at the Triathlon Catalan Championships. Back then, I was also swimming 1’12/100m over 1500m, among other performances.
The process continues: Pilot testing #OpenWaterProject ✅
Spent the morning at @canalolimpic testing the MOXY and heart rate sensors. Exciting times ahead as we move closer to the official start of this project! Grateful to be part of this journey—big thanks to everyone involved.
Spent the morning at @canalolimpic testing the MOXY and heart rate sensors. Exciting times ahead as we move closer to the official start of this project! Grateful to be part of this journey—big thanks to everyone involved.
March 18, 2025 at 7:44 PM
The process continues: Pilot testing #OpenWaterProject ✅
Spent the morning at @canalolimpic testing the MOXY and heart rate sensors. Exciting times ahead as we move closer to the official start of this project! Grateful to be part of this journey—big thanks to everyone involved.
Spent the morning at @canalolimpic testing the MOXY and heart rate sensors. Exciting times ahead as we move closer to the official start of this project! Grateful to be part of this journey—big thanks to everyone involved.
This weekend, we’re racing the 5K in Fraga. Today, we had a fine-tuning session on the plan to prepare for it.
Workout:
4 x 1km (3:06) / 75” rest
3 min rest
1600m (200m 3:20 - 200m 2:55)
3 min rest
3 x 200m progressive (32”)
BORG: 19
Let’s pray to the sub-16 min gods!
Workout:
4 x 1km (3:06) / 75” rest
3 min rest
1600m (200m 3:20 - 200m 2:55)
3 min rest
3 x 200m progressive (32”)
BORG: 19
Let’s pray to the sub-16 min gods!
March 18, 2025 at 10:35 AM
This weekend, we’re racing the 5K in Fraga. Today, we had a fine-tuning session on the plan to prepare for it.
Workout:
4 x 1km (3:06) / 75” rest
3 min rest
1600m (200m 3:20 - 200m 2:55)
3 min rest
3 x 200m progressive (32”)
BORG: 19
Let’s pray to the sub-16 min gods!
Workout:
4 x 1km (3:06) / 75” rest
3 min rest
1600m (200m 3:20 - 200m 2:55)
3 min rest
3 x 200m progressive (32”)
BORG: 19
Let’s pray to the sub-16 min gods!
And finally, this is a fantastic video about the last meeting of the RED Synchro Project II. It is a great pleasure for me to participate in a project like this, dedicated to improving the health and performance of artistic swimmers.
m.youtube.com/watch?v=gbKB...
m.youtube.com/watch?v=gbKB...
RED Synchroproject 2 - Video Jornada
YouTube video by Recerca_Esport
m.youtube.com
March 14, 2025 at 9:40 AM
And finally, this is a fantastic video about the last meeting of the RED Synchro Project II. It is a great pleasure for me to participate in a project like this, dedicated to improving the health and performance of artistic swimmers.
m.youtube.com/watch?v=gbKB...
m.youtube.com/watch?v=gbKB...
Two weeks ago, I had the opportunity to delve into the topic of hypoxia as part of my Integrative Physiology master’s program.
It was a privilege to learn from esteemed experts such as Jean-Paul Richalet, Ginés Viscor, José Antonio Calbet, and Anna Carceller.
It was a privilege to learn from esteemed experts such as Jean-Paul Richalet, Ginés Viscor, José Antonio Calbet, and Anna Carceller.
March 14, 2025 at 9:37 AM
Two weeks ago, I had the opportunity to delve into the topic of hypoxia as part of my Integrative Physiology master’s program.
It was a privilege to learn from esteemed experts such as Jean-Paul Richalet, Ginés Viscor, José Antonio Calbet, and Anna Carceller.
It was a privilege to learn from esteemed experts such as Jean-Paul Richalet, Ginés Viscor, José Antonio Calbet, and Anna Carceller.
Training is progressing well in the pursuit of a sub-33-minute 10K.
Yesterday’s session was a strong step forward, accumulating 30 minutes at LT2 with 5 x 6’ @ 3:45/km.
Today’s focus: RMT, heat training, and isometric work.
Learning while exercising ✌🏼
Yesterday’s session was a strong step forward, accumulating 30 minutes at LT2 with 5 x 6’ @ 3:45/km.
Today’s focus: RMT, heat training, and isometric work.
Learning while exercising ✌🏼
March 14, 2025 at 9:27 AM
Training is progressing well in the pursuit of a sub-33-minute 10K.
Yesterday’s session was a strong step forward, accumulating 30 minutes at LT2 with 5 x 6’ @ 3:45/km.
Today’s focus: RMT, heat training, and isometric work.
Learning while exercising ✌🏼
Yesterday’s session was a strong step forward, accumulating 30 minutes at LT2 with 5 x 6’ @ 3:45/km.
Today’s focus: RMT, heat training, and isometric work.
Learning while exercising ✌🏼
Is the maximal lactate accumulation rate (VLamax) a reliable indicator of maximal glycolytic power? Our latest systematic review explored this question.
A little article but happy for what represents and for being the first one.
Read the full article: recyt.fecyt.es/index.php/re...
A little article but happy for what represents and for being the first one.
Read the full article: recyt.fecyt.es/index.php/re...
Vista de Fiabilidad de la estimación de la potencia glucolítica máxima mediante la tasa máxima de acumulación de lactato (VLamax): una revisión sistemática
recyt.fecyt.es
March 14, 2025 at 9:07 AM
Is the maximal lactate accumulation rate (VLamax) a reliable indicator of maximal glycolytic power? Our latest systematic review explored this question.
A little article but happy for what represents and for being the first one.
Read the full article: recyt.fecyt.es/index.php/re...
A little article but happy for what represents and for being the first one.
Read the full article: recyt.fecyt.es/index.php/re...
Reposted by Ignacio Fernández Jarillo
So...
No, HIIT is not a replacement for low-intensity work. In fact, I would argue that the more high intensity work that you have in your program, the more low-intensity work you must do to healthily balance it out.
/endRant
No, HIIT is not a replacement for low-intensity work. In fact, I would argue that the more high intensity work that you have in your program, the more low-intensity work you must do to healthily balance it out.
/endRant
February 8, 2025 at 6:16 PM
So...
No, HIIT is not a replacement for low-intensity work. In fact, I would argue that the more high intensity work that you have in your program, the more low-intensity work you must do to healthily balance it out.
/endRant
No, HIIT is not a replacement for low-intensity work. In fact, I would argue that the more high intensity work that you have in your program, the more low-intensity work you must do to healthily balance it out.
/endRant
Reposted by Ignacio Fernández Jarillo
Quiet, please! The remarkable power of silence – for our bodies and our minds
Quiet, please! The remarkable power of silence – for our bodies and our minds
Our increasingly noisy world has been linked to cardiovascular disease, anxiety and depression, as well as hearing loss. But that’s not the only reason we need more peace and quiet in our lives
No dogs barking. No lawnmowers. No revving engines. No…
www.theguardian.com
February 2, 2025 at 2:10 PM
Quiet, please! The remarkable power of silence – for our bodies and our minds
And now, I’m learning to code in Python while studying for my second master’s in Physiology, preparing my first lessons as a teacher, writing my first scientific articles… and trying to break 33 minutes for 10K. Busy times! 😂
Hope this few "tweets" serve as a presentation ❤️
Hope this few "tweets" serve as a presentation ❤️
January 31, 2025 at 9:53 PM
And now, I’m learning to code in Python while studying for my second master’s in Physiology, preparing my first lessons as a teacher, writing my first scientific articles… and trying to break 33 minutes for 10K. Busy times! 😂
Hope this few "tweets" serve as a presentation ❤️
Hope this few "tweets" serve as a presentation ❤️
Then, in December: Our communication titled “Can muscle oxygen saturation provide real-time insights into the glycolytic contribution during intervals in the severe intensity domain?” was accepted for presentation at the Young Researchers in Sports Sciences Conference, organized by UAB.
January 31, 2025 at 9:49 PM
Then, in December: Our communication titled “Can muscle oxygen saturation provide real-time insights into the glycolytic contribution during intervals in the severe intensity domain?” was accepted for presentation at the Young Researchers in Sports Sciences Conference, organized by UAB.
Also in november I was part of a research summit that took place in the CAR of Sant Cugat were I did a presentation highlighting the potential of NIRS technology in the context of artistic swimming. Link: surl.li/gjecsr
January 31, 2025 at 9:47 PM
Also in november I was part of a research summit that took place in the CAR of Sant Cugat were I did a presentation highlighting the potential of NIRS technology in the context of artistic swimming. Link: surl.li/gjecsr
Some updates:
Last Nov, my master’s thesis titled “Exploring the Relationship Between Muscle Oxygenation Breakpoints and Ventilatory Thresholds in Triathletes” was awarded the prize for the Best Master’s Thesis in the field of sports performance at the ANECAFYDE congress.
Link: surl.li/toprpd
Last Nov, my master’s thesis titled “Exploring the Relationship Between Muscle Oxygenation Breakpoints and Ventilatory Thresholds in Triathletes” was awarded the prize for the Best Master’s Thesis in the field of sports performance at the ANECAFYDE congress.
Link: surl.li/toprpd
Ignacio Fernández Jarillo guanya el premi al millor TFM de rendiment esportiu al Congrés ANECAFYDE
L’Ignacio Fernández-Jarillo, col·laborador del GRCEIB, ha estat el guanyador del premi al millor Treball Final de Màster (TFM) de la branca de rendiment esportiu al I Congreso Nacional de Estudi…
surl.li
January 31, 2025 at 9:42 PM
Some updates:
Last Nov, my master’s thesis titled “Exploring the Relationship Between Muscle Oxygenation Breakpoints and Ventilatory Thresholds in Triathletes” was awarded the prize for the Best Master’s Thesis in the field of sports performance at the ANECAFYDE congress.
Link: surl.li/toprpd
Last Nov, my master’s thesis titled “Exploring the Relationship Between Muscle Oxygenation Breakpoints and Ventilatory Thresholds in Triathletes” was awarded the prize for the Best Master’s Thesis in the field of sports performance at the ANECAFYDE congress.
Link: surl.li/toprpd