When Shin Tae-yong first stepped into the dugout of the Indonesian national team, he didn’t just bring a novel tactical philosophy; he brought a jarring reality check regarding the physical condition of the squad. In a revelation that sent shockwaves through the region’s football community, the South Korean tactician claimed that the VO2 max levels of Indonesian players in 2020 were comparable to those of elementary school children.
VO2 max—the measurement of the maximum amount of oxygen a person can utilize during intense exercise—is a gold standard for cardiovascular endurance in elite sports. For professional footballers, high VO2 max levels are non-negotiable for maintaining high-intensity pressing and stamina over 90 minutes. Tae-yong’s assessment highlighted a systemic failure in physical preparation that he spent the next several years attempting to rectify.
As a sports journalist who has tracked the evolution of Asian football for over a decade, I’ve seen many coaches attempt to overhaul national team cultures. However, the scale of the project Shin Tae-yong undertook with the “Garuda” squad was immense. He wasn’t just managing a senior team; he was attempting to rebuild the physiological foundation of Indonesian football from the ground up.
Looking back from April 2026, the tenure of Shin Tae-yong serves as a case study in the intersection of sports science and national team transformation. From his appointment in late 2019 to his eventual departure in early 2025, his journey was marked by a relentless push for higher physical standards and a desire to push the team’s FIFA ranking upward.
The Foundation: A Five-Year Physical Overhaul
Shin Tae-yong was officially introduced by the PSSI as the head coach of the Indonesian national team on December 28, 2019, replacing Simon McMenemy according to reports on his timeline. At the time, the PSSI sought a leader who could promise championship titles and elevate the team’s competitive edge on the international stage.
Tae-yong’s approach was holistic. Rather than focusing solely on the senior squad, he took on the monumental task of managing all youth levels, including the U-19, U-20, and U-23 teams as detailed in his career statistics. This allowed him to implement a unified physical and tactical standard across the entire national pipeline, ensuring that players entering the senior team had already undergone the rigorous VO2 max and stamina training he demanded.
The road to improvement was not without setbacks. His debut as the tactical leader of Indonesia took place on May 25, 2021, in a friendly match against Afghanistan. The match ended in a 2-3 defeat for the Garuda squad, a sobering start to a tenure that would eventually witness the team undergo a significant transformation in how they approached the game physically and mentally.
By the Numbers: The Statistical Legacy
While the “elementary school” fitness comparison was a harsh starting point, the numbers over five years suggest a trajectory of growth. Shin Tae-yong’s record with the senior team stands at 26 wins, 14 draws, and 17 losses across 57 matches per documented statistics. This level of consistency provided a stable platform for Indonesia to compete against higher-ranked opponents.
The emphasis on cardiovascular endurance—the very issue highlighted by the 2020 VO2 max findings—became a hallmark of his tenure. By forcing players to adapt to higher intensity workloads, Tae-yong sought to eliminate the late-game fatigue that had historically plagued the Indonesian side. This focus on sports science was intended to make the team more resilient and capable of sustaining pressure against elite Asian sides.
| Metric | Value |
|---|---|
| Total Matches | 57 |
| Wins | 26 |
| Draws | 14 |
| Losses | 17 |
The End of an Era and the Transition to Kluivert
Despite the progress made in fitness and rankings, the partnership between Shin Tae-yong and the PSSI came to an abrupt end. He was officially dismissed from his position on Monday, January 6, 2025 after five years of service. His departure marked the end of a cycle focused on rebuilding the team’s physical identity.
Following his exit, the national team entered a new chapter under the guidance of Patrick Kluivert. By October 10, 2025, Kluivert was leading the team’s preparations for matches against opponents like Iraq as noted in press briefings. This transition shifted the focus from the foundational physical rebuild of the Tae-yong era toward a new tactical direction.
Rumors of a Return
The impact of Shin Tae-yong’s tenure remained a topic of intense debate among fans long after his departure. In October 2025, rumors circulated heavily on social media suggesting that the PSSI might re-hire the South Korean coach, particularly after the national team struggled in the fourth round of the 2026 World Cup Qualifiers according to reports.
At the time, Tae-yong was unemployed following his dismissal from Ulsan HD on October 10, 2025. However, he explicitly denied these rumors, stating that reports of his reappointment to the Indonesian national team were entirely false.
Key Takeaways from the Shin Tae-yong Era
- Physical Crisis: The 2020 assessment revealed critical deficiencies in VO2 max levels, which Tae-yong compared to those of children.
- Unified System: He managed the senior team and all youth levels (U-19, U-20, U-23) to standardize fitness and tactics.
- Competitive Growth: Achieved 26 wins in 57 senior matches, significantly improving the team’s resilience.
- Legacy of Science: Shifted the national team’s culture toward a heavy reliance on sports science and cardiovascular endurance.
The journey from “elementary school” fitness levels to a competitive regional force was a grueling process. While the results on the pitch were mixed, the structural changes in player conditioning established a new baseline for future generations of Indonesian footballers.
The next major checkpoint for the Indonesian national team will be the upcoming series of international fixtures under Patrick Kluivert, where the world will see if the physical foundations laid by Shin Tae-yong continue to bear fruit.
Do you think the focus on VO2 max and physical endurance was the most important part of Shin Tae-yong’s legacy? Share your thoughts in the comments below.