Other resources on the issue...

http://en.wikipedia.org/wiki/Coach_(sport)
This Wikipedia website provides a basic definition for a coach in the sports world. It gives a few different responsiblities of the coach as well.

http://www.coachfederation.org/ICF/
A website about coaching from a professional perspective. It gives a few roles of coach in the business world, but can definitely be related to sports by comparing the relationship between the coach and the client to the coach and the athlete.

http://www.golf-mental-game-coach.com/mental-game-golf-coach.html
Looks at a different sport - golf, and the role that a "mental game coach" plays in the life of a golfer.

http://en.wikipedia.org/wiki/Sport_psychology
Discusses the aspects of sports psychology among athletes involving concepts such as motivation from external and internal factors.

http://www.guidetocoachingbasketball.com/coaching_methods.htm
Talks about coaching techniques from basketball's point of view. It has additional links relating to developing a philosophy for coaching.

http://www.psychologymatters.org/smith.html
Gives an example of a program that teaches coaches good techniques to use. Specifically talks about coaching youth sports.

http://www.apa.org/monitor/nov99/in2.html
Discusses the importance of good psychological training amongst athletes. What do athletes do when the fans don't cheer or when they need to get prepared for a competition?

http://www.1to1coachingschool.com/Evidence_Based_Approach.htm
Another website with a business approach to coaching. Mentions that coaches do not have to have a sufficient knowledge of psychology to be a decent coach.

http://www.associatedcontent.com/article/6257/the_problem_with_overcoaching.html
An opinionated article that describes the issue of over-coaching. It discusses things such as decision-making and athletes receiving too much instruction from the sidelines. References the NBA.

http://www.footy4kids.co.uk/newsletter6.htm
An editorial on over-coaching, as well as questions and answers on the subject. Talks about the problems with it, the effects, and what can be done about it.

http://www.brianmac.co.uk/coaching.htm

Source from the United Kingdom Coaching Strategy. Very good information on the different roles a coach can play; provides basic coaching tips. Is coaching an art or science?

http://www.wpys.org/overcoaching.pdf

Source from the US Soccer League that addresses over-coaching from soccer's point of view. Gives an example of an over-coaching situation and the effects it can have on athletes.

http://209.85.165.104/search?q=cache:o6DaxaHmPmgJ:www.amessoccer.org/documents/Coaching/OverCoachingSimeone.pdf+over-coaching&hl=en&ct=clnk&cd=7&gl=us

An article that separates soccer from other sports when it comes to over-coaching. Admits that other sports require a higher degree of coaching in competitive situations.

http://www.baseballtips.com/basecoach.html

A look at the base coach's responsibility during a baseball game. Assigns a pretty big role to this coach, giving him a lot of responsibiliy to better the team's performance.

http://sportsmedicine.about.com/od/tipsandtricks/a/qualitycoach.htm

An article about effective coaching methods. Such characteristics of a good coach include listening, motivating, and leading by example.

http://www.pponline.co.uk/encyc/sports-coaching.html

Brings up the idea of internal obstacles affecting performance more than a person's skills. Should a coach focus more on developing skills or on how to cope with internal struggles?

http://findarticles.com/p/articles/mi_m1208/is_24_229/ai_n13812569

An article about NFL quarterbacks using the wristband technique to look up plays. The coach calls the play and tells the quarterback through their headset technology. The wristband could be considered a back up if the communication between player and coach fails.

http://en.wikipedia.org/wiki/Bob_Knight

Basic background information on Bobby Knight, a famous and successful basketball coach. His ways of coaching were very contraversial, but brought him victories.

http://www.focusedtraining.com/a3.html

A rowing coach gives advice on how to train his athletes. Admits that you can't train an athlete to win but rather to have a good performance.

http://www.competitivedge.com/ppg/ppg07.html

Provides a psychological perspective on how to coach a team or individual. Generally talks about boosting the confidence of the athlete, giving them a high self-esteem.