PMID- 32509114
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20240328
IS  - 1939-795X (Print)
IS  - 1939-795X (Electronic)
IS  - 1939-795X (Linking)
VI  - 13
IP  - 2
DP  - 2020
TI  - Acute Ultraviolet Light Exposure and Post-Resistance Exercise Serum Testosterone: 
      A Pilot Study in Older Men.
PG  - 607-614
AB  - Testosterone deficiency is linked to a multitude of conditions including 
      depression, sexual dysfunction, and cognitive impairment. Although synthetic 
      testosterone-boosting pharmaceuticals have gained wide use, recent data suggests 
      that vitamin D, ingested orally, may positively impact serum testosterone. 
      Furthermore, evidence tying ultraviolet (UV) light exposure to endogenous vitamin 
      D synthesis presents an intriguing possibility for naturally enhancing serum 
      testosterone. This investigation sought to determine the effect of acute UV light 
      exposure on resistance exercise-induced acute testosteronemia and vitamin D in 
      older men. Six older adult men of varying activity levels (age 62 +/- 1.79 yrs., 
      height 179.92 +/- 1.12 cm., body mass 83.79 +/- 3.12 kg., BMI 25.95 +/- 1.15 kg/m(2)) 
      participated in two testing sessions separated by one week: 1) Resistance 
      exercise followed by standard passive recovery (RERC) and 2) RE plus UV light 
      exposure during the first 10-minutes of RE passive recovery (RERC-UV). The RE 
      protocol was identical in both sessions and consisted of four sets of 10RM on leg 
      press, chest press, and back row with 1-minute of rest between sets followed by 
      30-minutes of post-RE passive recovery. Serum testosterone and vitamin D were 
      measured preand post-RE in 5-minute increments during the 30-minute recovery. 
      Analysis of variance revealed neither RE or RERC-UV significantly affected serum 
      testosterone or vitamin D. These findings suggest that acute UV light exposure 
      may be insufficient to positively impact serum testosterone and vitamin D 
      following a single bout of RE in older adult men.
FAU - Emamjomeh, Shayan
AU  - Emamjomeh S
AD  - Physiology of Exercise and Sport Laboratory, Department of Kinesiology, 
      California State University-Long Beach, Long Beach, CA, USA.
FAU - Segura, Luis E
AU  - Segura LE
AD  - Physiology of Exercise and Sport Laboratory, Department of Kinesiology, 
      California State University-Long Beach, Long Beach, CA, USA.
FAU - Cotter, Joshua A
AU  - Cotter JA
AD  - Physiology of Exercise and Sport Laboratory, Department of Kinesiology, 
      California State University-Long Beach, Long Beach, CA, USA.
FAU - Schick, Evan E
AU  - Schick EE
AD  - Physiology of Exercise and Sport Laboratory, Department of Kinesiology, 
      California State University-Long Beach, Long Beach, CA, USA.
LA  - eng
PT  - Journal Article
DEP - 20200501
PL  - United States
TA  - Int J Exerc Sci
JT  - International journal of exercise science
JID - 101513127
PMC - PMC7241626
OTO - NOTNLM
OT  - Sunlight
OT  - hypertrophy
OT  - resistance exercise
OT  - testosteronemia
OT  - vitamin D
EDAT- 2020/06/09 06:00
MHDA- 2020/06/09 06:01
PMCR- 2020/05/01
CRDT- 2020/06/09 06:00
PHST- 2020/06/09 06:00 [entrez]
PHST- 2020/06/09 06:00 [pubmed]
PHST- 2020/06/09 06:01 [medline]
PHST- 2020/05/01 00:00 [pmc-release]
AID - ijes-13-2-607 [pii]
PST - epublish
SO  - Int J Exerc Sci. 2020 May 1;13(2):607-614. eCollection 2020.