Greater lactate accumulation does not alter peripheral concentrations of key appetite-regulating neuropeptides.

The potential mechanisms involved in lactate's role in exercise-induced appetite suppression require further examination. We used sodium bicarbonate (NaHCO) supplementation in a double-blind, placebo-controlled, randomized crossover design to explore lactate's role on neuropeptide Y (NPY), agouti-related peptide (AgRP), and alpha-melanocyte-stimulating hormone (α-MSH) concentrations. Twelve adults (7 males; 24.

Oral sodium lactate ingestion does not increase blood lactate concentrations and is accompanied by moderate-to-severe gastrointestinal side effects.

Lactate has diverse roles in biology and has been implicated in the control of energy intake. A variety of methods (i.e.

The Effect of the Menstrual Cycle on Energy Intake: A Systematic Review and Meta-analysis.

Context: Energy intake may differ across the menstrual cycle, with some studies identifying greater energy intake in the luteal phase (LP) compared with the follicular phase (FP) and others finding no clear differences. To date, no study has systematically synthesized the available data to draw more definite conclusions while considering any methodological inconsistencies between studies.

Objective: The aim was to conduct a systematic review/meta-analysis in an effort to determine if there are differences in energy intake between the FP and LP.

Low-Load and High-Load Resistance Exercise Completed to Volitional Fatigue Induce Increases in Postexercise Metabolic Responses With More Prolonged Responses With the Low-Load Protocol.

Grisebach, D, Bornath, DPD, McCarthy, SF, Jarosz, C, and Hazell, TJ. Low-load and high-load resistance exercise completed to volitional fatigue induce increases in post-exercise metabolic responses with more prolonged responses with the low-load protocol. J Strength Cond Res 38(8): 1386-1393, 2024-Comparisons of high-load with low-load resistance training (RT) exercise have demonstrated no differences in postexercise metabolism when volume is matched.

Differential changes in appetite hormones post-prandially based on menstrual cycle phase and oral contraceptive use: A preliminary study.

This was a preliminary study that examined whether appetite regulation is altered during the menstrual cycle or with oral contraceptives. Ten naturally cycling females (NON-USERS) and nine tri-phasic oral contraceptive using females (USERS) completed experimental sessions during each menstrual phase (follicular phase: FP; ovulatory phase: OP; luteal phase: LP). Appetite perceptions and blood samples were obtained fasted, 30, 60, and 90 min post-prandial to measure acylated ghrelin, active glucagon-like peptide-1 (GLP-1), and total peptide tyrosine tyrosine (PYY).

Low- and high-load resistance training exercise to volitional fatigue generate exercise-induced appetite suppression.

Unlabelled: Research on exercise-induced appetite suppression often does not include resistance training (RT) exercise and only compared matched volumes.

Purpose: To compare the effects of low-load and high-load RT exercise completed to volitional fatigue on appetite-regulation.

Methods: 11 resistance-trained males (24 ± 2 y) completed 3 sessions in a crossover experimental design: 1) control (CTRL); 2) RT exercise at 30% 1-repetition maximum (RM); and 3) RT exercise at 90% 1-RM.

Interleukin-6 is not involved in appetite regulation following moderate-intensity exercise in males with normal weight and obesity.

Objective: In obesogenic states and after exercise, interleukin (IL)-6 elevations are established, and IL-6 is speculated to be an appetite-regulating mechanism. This study examined the role of IL-6 on exercise-induced appetite regulation in sedentary normal weight (NW) males and those with obesity (OB).

Methods: Nine NW participants and eight participants with OB completed one non-exercise control (CTRL) and one moderate-intensity continuous training (MICT; 60 minutes, 65% V̇O ) session.

Intense interval exercise induces lactate accumulation and a greater suppression of acylated ghrelin compared with submaximal exercise in middle-aged adults.

Exercise in young adults (18-25 yr) suppresses appetite in a dose-response relationship with exercise intensity. Although several mechanisms have been proposed to explain this response, lactate is the most well established. To date, no study has investigated this specifically in middle-aged adults where the appetite response to a meal is different.

Leptin and energy balance: exploring Leptin's role in the regulation of energy intake and energy expenditure.

Leptin is a tonic appetite-regulating hormone, which is integral for the long-term regulation of energy balance. The current evidence suggests that the typical orexigenic or anorexigenic response of many of these appetite-regulating hormones, most notably ghrelin and cholecystokinin (CCK), require leptin to function whereas glucagon-like peptide-1 (GLP-1) is required for leptin to function, and these responses are altered when leptin injection or gene therapy is administered in combination with these same hormones or respective agonists. The appetite-regulatory pathway is complex, thus peptide tyrosine tyrosine (PYY), brain-derived neurotrophic factor (BDNF), orexin-A (OXA), and amylin also maintain ties to leptin, however these are less well understood.

Classroom Activity Breaks Improve On-Task Behavior and Physical Activity Levels Regardless of Time of Day.

Classroom physical activity breaks (CAB) are beneficial for increasing children's physical activity (PA) levels as well as the amount of time spent being on-task within the classroom. To examine the effect of CAB at different times within the school day on on-task behavior and PA levels in primary school (grade 1-3) children. Thirty-five children (6 ± 1 y, 22 = male, 13 = female) participated in four conditions in a randomized order: morning (AM), afternoon (PM), morning and afternoon (BOTH), and no CAB (CTRL).

Physiological Responses to Increasing Battling Rope Weight During Two 3-Week High-Intensity Interval Training Programs.

Bornath, DPD and Kenno, KA. Physiological responses to increasing battling rope weight during two 3-week high-intensity interval training programs. J Strength Cond Res 36(2): 352-358, 2022-The purpose of this study was to determine the effect of increasing battling rope weight during 6 weeks (wks) of battling rope high-intensity interval training (HIIT) on upper-body oxygen consumption and skeletal muscle strength, power, and endurance performance.