In a post on Facebook, Akaash Maharaj admitted he was "disappointed" the IPC welcomed back the RPC despite the taskforce confirming the reinstatement criteria had not been met as Russia has repeatedly refused to accept the findings of the McLaren Report.

IPC President Andrew Parsons confirmed the taskforce had recommended the suspension be maintained but the Governing Board effectively ignored the group when it lifted a near three-year ban on the RPC, which officially kept the nation out of the Rio 2016 and Pyeongchang 2018 Paralympic Games.

Parsons insisted it was unfair to punish athletes because of the Russian authorities' failure to accept the hard-hitting report from the Canadian lawyer, which sparked an unprecedented doping crisis, as the RPC had met the other 69 conditions.

The RPC's suspension is due to formally end on March 15.

A series of post-reinstatement demands set to remain in place until December 31, 2022 were established by the IPC and Russia has been warned that a failure to meet these requirements could result in the suspension being reimposed.

While the reaction to the decision from the IPC was largely supportive, Maharaj, chief executive of think tank the Mosaic Institute and a former Canadian equestrian athlete, has broken ranks to speak out against the move.

"My colleagues on the IPC independent task force and I found that Russian authorities have not met their obligation to address an institutionalised and wide-ranging doping conspiracy and cover-up, and the involvement in that scheme of (among others) officials from the Ministry of Sport... and the FSB [Russia’s state security agency]," Maharaj wrote.

"Accordingly, we unanimously recommended that the IPC Board continue Russia's suspension from the Paralympic Games. 

"The IPC Board acknowledged the accuracy of our findings, but declined our recommendation and instead readmitted Russia to the Paralympics.

"I am disappointed by the IPC Board's decision, but that disappointment only strengthens my respect for my independent task force colleagues, for showing the collective strength of will to speak truth to power and to remain steadfast in the defence of ethics in international sport."

The World Anti-Doping Agency (WADA) also had an acceptance of the McLaren Report as one if its criteria for the Russian Anti-Doping Agency to be declared compliant.

But the organisation said Russia had met the condition by acknowledging the International Olympic Committee's Schmid Report instead.

Russia, controversially reinstated by WADA last year, must not be declared non-compliant if the RPC is to remain a member of the IPC. 

The RPC must also contribute to the IPC's "significant costs" which arose from the increased testing of Russian athletes.

Russian athletes will only be able to compete at Tokyo 2020 and Beijing 2022 if they have met the specified testing requirements.