Dave Redding called it a career this week.   The old-school strength and conditioning assistant coach for the Green Bay Packers ended an impressive 24 year run in the NFL when he retired on Monday.  The former Nebraska Cornhusker has taught players how to become bigger, faster and stronger in the collegiate and pro ranks since the 1970's.  His approach had players develop muscles by using movement drills that mimic the movement and explosion carried out on the field.  He worked with Mike McCarthy in Kansas City back in the 90's and McCarthy hired Redding to overhaul the Packers program in 2009.   Last year, Redding gave way to allow Mark Lovat to become the lead strength coach.   Finally picking up a Super Bowl ring earlier this month led to Dave's retirement.   What I'll remember most about Redding is his off-beat personality.  Before every game, Dave would take a stroll on the field at Lambeau or on the road, barefoot, at least until winter set in.  Quite a character.  The Packers didn't wait long to hire a new assistant.  Zac Woodfin, a former linebacker at Alabama-Birmingham, training a host of college and NFL players at Athlete's Performance in Los Angeles, joined the team on Tuesday as the strength and conditioning assistant.  Woodfin is actually returning to Green Bay.  As an undrafted free agent in 2005, Woodfin spent most of that year on the practice squad.