But in the past year he has missed over 100 days due to injury, has been rushed back several times, didn't do a proper preseason training and to top it all off Gerardo Martino proved to have antiquated training methods according to various reports and player interviews (Isaac Cuenca) after his departure which bemoaned a lack of intensity in training.
Sorry to hijack a bit but wanted to comment on Martino. The reports on lack of trainning and such may have been greatly exagerated and misinterpreted, specially by some sectors of the local press who were against Martino from day 1. Cuenca talked about Martino's lack of 'positional trainning compared to Guardiola', not so much physical conditioning, and it makes sense since Martino has a vertical, simpler style of game as opposed to Guardiola's more horizontal, possession and intricate systems. Other players in the squad (Mascherano, Fabregas, Alba, etc.) have mentioned trainning intensity was as good as always.
Once Martino left those sectors of local press started having a field day with him and suddenly he was guilty of everything that went wrong and the players had done nothing wrong, mostly because they get their insider info from players themselves so they never blame them.
I'll say in his defense he only lost 2 games against big rivals: Atletico in CL, and Madrid in Copa final (with sub goalkeeper and defense, and both teams finalists of CL). He lost liga in the last game and copa in the final. He won every other big game, including 2x ManCity, 2x Madrid in liga and more I don't remember. All this with Messi missing for 3 months, Neymar missing 2+ months, Alba missing 3+ months, Valdés missing 3+ months, Alves missing 2+ months, Iniesta and Piqué in their worst season, Busquets with pubalgia, Puyol virtually retired due to knee problems, no defense replacements, etc. The man was never recognized any kind of merit like, for example, when Mourinho beat City he was considered a genius, when Martino did it twice it was just another day in the office.
If physical trainning was so bad I wonder why neither Alexis nor Neymar, nor some others, show any hint of lack of conditioning.
Regarding Messi, he's been walking for the last 2-3 seasons and I'd say it gradually gets worse. That said, this season he only scored 3 less goals than Ronaldo (league top scorer) while missing 3 months due to injury and shooting 50 times less. He has better numbers in 2014 year than Ronaldo (goals+assists). He was also Barcelona's top assist (69). It's obvious he moves less and has lost explosiveness and maybe top speed, but he still manages to put up impressive numbers, goals and passes. Bit of a mystery, but I'm not sure conditioning has anything to do with it. New trainer Luis Enrique is a conditioning fanatic (marathon, triathlon competitor) so I guess we'll find out this season if that is the problem.