 The Gerontologist
The Gerontologist
 
																	
																		
																	
																		
																	
																	
																		
																	
																		
																	
																	
																			
																					
    Lefler, L.L. , Lensing, S.Y., Garner, K.K., McSweeney, J.C. The Gerontologist. Improving optimal aging with physical activity: Challenges in quantifying physical activity with tri-axial accelerometers in a randomized controlled clinical trial for older women. 2013; 53(S1).