TY - JOUR
T1 - Evening high-intensity interval exercise does not disrupt sleep or alter energy intake despite changes in acylated ghrelin in middle-aged men
AU - Larsen, Penelope
AU - Marino, Frank
AU - Melehan, Kerri
AU - Guelfi, Kym J.
AU - Duffield, Rob
AU - Skein, Melissa
PY - 2019/6/1
Y1 - 2019/6/1
N2 - Despite exercise benefits for sleep and appetite, due to increased
time restraints, many adults remain inactive. Methods to improve
exercise compliance include preferential time‐of‐day or engaging in
short‐duration, high‐intensity interval exercise (HIIE). Hence, this
study aimed to compare effects of HIIE time‐of‐day on sleep and
appetite. Eleven inactive men undertook sleep monitoring to determine
baseline (BASE) sleep stages and exclude sleep disorders. On separate
days, participants completed 30 min HIIE (60 s work at 100% , 240 s rest at 50% )
in (1) the morning (MORN; 06.00–07.00 h), (2) the afternoon (AFT;
14.00–16.00 h) and (3) the early evening (EVEN: 19.00–20.00 h). Measures
included appetite‐related hormones (acylated ghrelin, leptin, peptide
tyrosine tyrosine) and glucose pre‐exercise, 30 min post‐exercise and
the next morning; overnight polysomnography (PSG; sleep stages); and
actigraphy, self‐reported sleep and food diaries for 48 h post‐exercise.
There were no between‐trial differences for total sleep time (P = 0.46). Greater stage N3 sleep was recorded for MORN (23 ± 7%) compared to BASE (18 ± 7%; P = 0.02); however, no between‐trial differences existed (P > 0.05). Rapid eye movement (REM) sleep was lower and non‐REM sleep was higher for EVEN compared to BASE (P ≤ 0.05). At 30 min post‐exercise, ghrelin was higher for AFT compared to MORN and EVEN (P = 0.01), while glucose was higher for MORN compared to AFT and EVEN (P ≤ 0.02). No between‐trial differences were observed for perceived appetite (P ≥ 0.21) or energy intake (P = 0.57).
Early evening HIIE can be performed without subsequent sleep
disruptions and reduces acylated ghrelin. However, perceived appetite
and energy intake appear to be unaffected by HIIE time of day.
AB - Despite exercise benefits for sleep and appetite, due to increased
time restraints, many adults remain inactive. Methods to improve
exercise compliance include preferential time‐of‐day or engaging in
short‐duration, high‐intensity interval exercise (HIIE). Hence, this
study aimed to compare effects of HIIE time‐of‐day on sleep and
appetite. Eleven inactive men undertook sleep monitoring to determine
baseline (BASE) sleep stages and exclude sleep disorders. On separate
days, participants completed 30 min HIIE (60 s work at 100% , 240 s rest at 50% )
in (1) the morning (MORN; 06.00–07.00 h), (2) the afternoon (AFT;
14.00–16.00 h) and (3) the early evening (EVEN: 19.00–20.00 h). Measures
included appetite‐related hormones (acylated ghrelin, leptin, peptide
tyrosine tyrosine) and glucose pre‐exercise, 30 min post‐exercise and
the next morning; overnight polysomnography (PSG; sleep stages); and
actigraphy, self‐reported sleep and food diaries for 48 h post‐exercise.
There were no between‐trial differences for total sleep time (P = 0.46). Greater stage N3 sleep was recorded for MORN (23 ± 7%) compared to BASE (18 ± 7%; P = 0.02); however, no between‐trial differences existed (P > 0.05). Rapid eye movement (REM) sleep was lower and non‐REM sleep was higher for EVEN compared to BASE (P ≤ 0.05). At 30 min post‐exercise, ghrelin was higher for AFT compared to MORN and EVEN (P = 0.01), while glucose was higher for MORN compared to AFT and EVEN (P ≤ 0.02). No between‐trial differences were observed for perceived appetite (P ≥ 0.21) or energy intake (P = 0.57).
Early evening HIIE can be performed without subsequent sleep
disruptions and reduces acylated ghrelin. However, perceived appetite
and energy intake appear to be unaffected by HIIE time of day.
KW - appetite regulation
KW - sleep
KW - vigorous exercise
UR - http://www.scopus.com/inward/record.url?scp=85063634444&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85063634444&partnerID=8YFLogxK
U2 - 10.1113/EP087455
DO - 10.1113/EP087455
M3 - Article
C2 - 30801859
AN - SCOPUS:85063634444
VL - 104
SP - 826
EP - 836
JO - Quarterly Journal of Experimental Physiology
JF - Quarterly Journal of Experimental Physiology
SN - 0958-0670
IS - 6
ER -