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							| Functional Foods in Health and Disease - Online ISSN: 2160-3855; Print ISSN: 2378-7007



	

				
						
 
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																Functional Foods in Health and Disease - Online ISSN: 2160-3855; Print ISSN: 2378-7007
										

				


				
				
					
					
						
																					
				
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					Vol. 14 No. 12 (2024): December 2024
				
				/
			
	
			
									Research Articles
							
		



	
		  	 

		
	
		Effect of resistance training and lemon myrtle extract on muscle size of older adults: A pilot randomized controlled trial
	


	
	
		

							
					Authors

						
							
								Shuji Sawada
							
																																		
	
							
								Azusa Nishino
							
																																		
	
							
								Shinichi Honda
							
																																		
	
							
								Yuji Tominaga
							
																																		
	
							
								Shiori Makio
							
																																		
	
							
								Hayao Ozaki
							
																																		
	
							
								Shuichi Machida
							
																																		


				
			
																	
					
												DOI:
					

					
						
							https://doi.org/10.31989/ffhd.v14i12.1472
						
					
				
			

						
										
					Abstract

					Background: Recent studies have shown that lemon myrtle leaf (LM) extracts activate muscle satellite cells. This research examined the impact of combining LM extract supplementation with resistance training on muscle hypertrophy in older adults.

Methods:  This randomized controlled trial allocated fourteen older adults (65-79 years) to either an LM supplement group (n=7) or a placebo group (n=7). Participants engaged in low-load resistance training twice weekly for 12 weeks while receiving their designated supplements. Muscle thickness at the anterior thigh (AT) was assessed using B-mode ultrasound at baseline, 6 weeks, and 12 weeks to evaluate muscle hypertrophy. Trial registration: UMIN000050432.

Results:.A 12-week intervention yielded significant muscle thickness enhancements in both groups. Nonetheless, the LM group exhibited a substantially greater relative increase (p < 0.05) compared to the placebo group. Furthermore, the low-load resistance training program elicited a significant 7.4% increase in muscle thickness in the LM group at six weeks, whereas the placebo group displayed a negligible 0.1% change.

Conclusions: The present study suggests that intake of LM extract could enhance the muscle hypertrophy effect of resistance training and requires further investigation in the future.

Keywords: sarcopenia, plant extract, muscle hypertrophy, lemon myrtle

				
			
			

						
																																																													
						
		


		

						
										
					
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																			2024-12-11
																	

				
							

			
						
										

											
							
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									Vol. 14 No. 12 (2024): December 2024
								
							

						
					
											
							
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								Research Articles
							

						
					
									

			
						
										
					
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